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Central heating boiler service

Regular servicing of your central heating boiler is key to the safe and efficient operation of your home’s heating system. Our team of experienced service technicians will ensure that your boiler operates without failure, providing warmth and comfort on cold days.

Our team of specialists

Our team consists of qualified service technicians with many years of experience in the heating industry. Our service technicians:

  • Certified specialists – they have the necessary authorizations and certificates to service boilers.
  • Experienced specialists – hundreds of completed services and regularly improved qualifications to keep up to date with the latest technologies.
  • Individual approach – we adapt our services to the individual needs of each client.
GRAND PELLET 200 – METAL FACH Technika Grzewcza wiz6

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How-to videos

Check out what we’re talking about on our YouTube channel!

In order to meet the needs of our Customers and installers who install our central heating boilers, we create instructional materials on our YouTube channel, developed by our experienced service technicians. The topics of the videos concern the installation and operation of boilers. Under each video, you can ask questions about a specific topic, our specialists will try to dispel all doubts and answer the questions asked. We want our Customers and installers to have an impact on the further development of the channel, which is why you can also post ideas/suggestions for topics of subsequent videos in the comments. We will be happy to consider each of them.
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Periodic inspections of boilers

  • Technical condition check – we check all boiler components to make sure they are working properly.
  • Detection of potential faults – early detection of problems helps prevent serious failures.

Repairs and troubleshooting

  • Fast response – we know how important it is to quickly restore the boiler’s efficiency.
  • Professional repairs – we use original spare parts and proven repair methods.

Cleaning and maintenance

  • Removing sediment and dirt – regular cleaning improves boiler efficiency.
  • Maintenance of components – lubrication and protection of components against corrosion.

Calibration and driver settings

  • Optimization of boiler operation – adjustment of parameters to the individual needs of the user.
  • Operation training – instruction for users on correct operation.

How does the service process work?

Step 1: Service Request

  • Contact the service via an online form or by phone.
  • A short description of the problem. Provide symptoms or information that will help us prepare for the visit.
  • Telephone service, often the fault can be fixed free of charge during the consultation.
  • In a more complex case, the service will arrange a convenient date for our specialist to visit.

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Step 2: Service technician visit

  • Device diagnostics, our specialist will carry out a detailed inspection of the boiler.
  • Information about the condition of the boiler, you will receive during the visit, a report with detected faults and recommendations will be provided at the end of the visit.

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Step 3: Service implementation

  • We perform all necessary service activities according to the arrangements.
  • After the work is completed, we will check the correct operation of the boiler.

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Step 4: Documentation

  • After the service is completed, you will receive a confirmation of the service with a description of the activities performed, in the form of a service report.
  • Our specialist can provide you with operating advice regarding the further use of the boiler if he notices any irregularities that may cause a failure of the device in the future.

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Frequently Asked Questions (FAQ)

Driver related question

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What does the alarm – exhaust gas sensor damaged – mean?
Answer: A faulty exhaust gas sensor indicates that the exhaust gas temperature has exceeded 250°C. The exhaust gas temperature sensor is faulty. Explanation: Reduce fuel supply. Replace the exhaust gas temperature sensor.
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What does the alarm mean – clean the boiler?
Answer: Clean the boiler means that the boiler exchanger is dirty. Exhaust gas temperature higher than 220°C. Explanation: Clean the boiler exchanger. Reduce fuel supply.
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What does the alarm – overheated mixer mean?
Answer: Overheated mixer means that the temperature after the mixing valve is higher than 70°C.
Explanation: Reduce the temperature at the valve.
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What does the boiler overheating alarm mean?
Answer: Boiler overheated, temperature higher than 90°C. Too short standstill time. Explanation: Cool the boiler. Extend standstill time.
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What does the alarm – overheated feeder mean?
Answer:
An overheated feeder may indicate:
- open fuel tank flap
- damaged seal under the tank flap
- damaged seal under the hopper
- damaged seal of the feeder cleanouts
- damaged seal between the burner and the feeder pipe
- loose screws on the connections between the hopper and the feeder and the burner
Explanation:
- close the fuel tank flap
- replace the seal under the tank flap
- replace the seal under the hopper
- replace the seal
- replace the seal
- tighten all screws
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What does the alarm – exhaust gas temperature too high – mean?
Answer: Indicates that the boiler exchanger may be dirty. Exhaust gas temperature higher than 280°C. Explanation: Clean the boiler exchanger. Reduce fuel supply.
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What is anti-lock?
Answer: Anti-blocking is a function that works with pellets. Explanation: It is used to maintain the embers in the furnace. When the boiler switches off, reaches the set temperature, every 20 minutes, if the temperature does not drop, the anti-blocking will turn on for 5-10 seconds. The anti-blocking can be set freely depending on the needs and power of the boiler. Normally it is 5 seconds.
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What is domestic hot water (DHW) priority?
Answer: Domestic hot water priority is a function in the controller that first heats the domestic hot water tank and then turns on the central heating. Explanation: A function normally used in places with very high domestic water consumption.
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What operating modes does the PLATINUM controller have?
Answer: The PLATINUM controller has three operating modes.
Explanation: Summer – heating only domestic hot water.
Manual – heating central domestic hot water and central heating. In the operating mode, you need to set the set temperature on the boiler and the heating circuit.
Weather – heating central domestic hot water and central heating. In this mode, the weather controller calculates the set temperature for the boiler and the heating circuit.
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What actions does a microprocessor controller perform?
Answer:
It implements:
- automatic ignition and extinguishing
- weather control
- room control (room temperature)
- control of the central utility water pump
- control via a clock: circulation pump, additional pump, burner (boiler operating time)
- control via a LAMBDA SENSOR
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What is domestic hot water (DHW) disinfection?
Answer: Domestic hot water disinfection is a function in the controller that heats the domestic hot water tank to a temperature of 70°C in order to disinfect it. Explanation: A function used to kill Legionella bacteria in the central domestic water circuit. It is normally rarely used. If the temperature in the tank is maintained at 50°C, such bacteria will not breed. The probability of bacteria occurring is when we maintain a low temperature in the tank or when we rarely turn on the water taps.
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What is a heating curve?
Answer: The heating curve is a graph of outside temperatures to the central heating water temperature. The heating curve is the calculated heating temperature relative to the outside temperature. Explanation: The heating curve graph is in the controller's user manual.
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How is the boiler protected against freezing?
Answer: The boiler is protected from freezing by the controller program, which does not allow this. Explanation: At temperatures below 8°C, the controller opens the mixing valve and turns on the central heating pump to prevent water from freezing in the system. Additionally, all pipes particularly exposed to heat loss should be protected with additional insulation. Check that there are no broken windows, open windows, holes in the walls, etc. near the pipes.
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Alarms and prompts – displayed as AL and IN on the x40 thermostat
Depending on the controller the boiler is equipped with, the alarm markings differ. Below are the codes for both controller versions:

Platinum (dedicated controller version for eco peas)
1. Exhaust gas sensor failure
2. Boiler temperature exceeded
3. Feeder temperature exceeded
4. Boiler sensor failure
5. Feeder sensor failure
6. Unsuccessful ignition
7. Excess exhaust gas temperature
8. Damaged STB circuit
9. Low fuel
10. Damaged fuel feed system
11. Damaged fan
12. Damaged flow meter
Platinum Pellet (dedicated controller version for pellets)
1. Boiler temperature exceeded
2. Feeder temperature exceeded
3. Boiler sensor failure
4. Feeder sensor failure
5. Unsuccessful ignition
6. Excess exhaust gas temperature
7. Damaged STB circuit
8. Low fuel
9. Damaged feed system fuel
10. Fan failure
11. Flow meter failure
Common messages for both versions:
1. Low fuel level
2. Unsuccessful loading of the tank (from the external tank)
3. No fuel
4. Calibration of the Lambda probe in progress
5. Calibration of the Lambda probe failed
6. Loss of flame
7. Damaged fuel supply system
8. Boiler door open

Installation question

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Is it necessary to install a four-way valve?
Answer: Yes, it is required to install a four-way valve.

Explanation:
A four-way valve is a device that performs many useful functions, including:
- protects the boiler against low-temperature corrosion
- mixes the feed water back to obtain a constant medium for the central heating circuit or underfloor heating
- enables smooth temperature regulation using an actuator
- installs the valve to provide additional savings related to fuel
- primarily protects our boiler against corrosion and extends the life of the boiler

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What to do after boiling water in a kettle?
Answer: Don't panic. Usually, nothing serious should happen when you boil water in a boiler. The reason for the boiler boiling is the lack of heat collection, open ash pan door, or the addition of flammable fuel, e.g. newspapers.

Explanation: In such a case, the controller switches on all pumps above 90°C, even if they are switched off, and opens the mixing valve to cool the boiler.
If the door is open, close it. If it is a top-burning boiler, you can open the top door to cool the boiler faster.

Cold water must not be allowed into the system under any circumstances - it may cause the boiler to explode.

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What is the minimum boiler temperature?
Answer: The higher the better, but the minimum boiler temperature should not be less than 60°C.

Explanation:
The boiler should be adjusted so that at a boiler temperature of 60oC the flue gases are around 140°C.

We will have the best boiler efficiency.

All combustion conditions will be maintained.

At such temperatures the boiler will not freeze or get damp due to the lack of flue gas condensation (dew point temperature).

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Why is the central heating pump not working?
Answer: DHW priority is on. Schedule is on.

Explanation: To eliminate the problem, disable DHW priority, set schedule.

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Is it allowed to allow water into the system while the boiler is operating?
Answer: Allowing water into the system while the boiler is operating is prohibited.

Explanation: Allowing water into a heated boiler creates the risk of leaks in the boiler and system.

When the boiler is very hot, this can lead to leaks or cracks.

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What is the minimum return temperature?
Answer: The minimum return temperature by book is 10°C less than the supply temperature.

Explanation: In practice, without the use of mixing valves or other methods of mixing the boiler, this is practically impossible.
It is advisable to install a four-way valve, with such an installation the boiler works on a short circuit at a high temperature, and the installation at any set temperature.
Return protection at such a temperature is maintained and it can be said that it is equal to the boiler supply temperature.

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Why does the controller close the mixing valve?
Answer: Return temperature too low, allow the boiler to slowly supply water to the central heating system, in the case of a long-term condition, place the return sensor closer to the mixing valve or change the minimum return temperature.

Problems with the central heating boiler

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Why do unburned pellets fall into the ash pan?
Answer: Unburned pellets fall into the ash pan because the pellet feed is set too high or the airflow is too high.

Explanation:
Reduce the feed by 2-3% and observe, repeat if necessary.
Reduce the airflow by 2-3% and observe, repeat if necessary.

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Why does unburned eco-pea coal fall into the ash pan?
Answer: Unburned pea coal falls into the ash pan because the pea coal feed is set too high.

Explanation: Reduce the feed by 2-3% and observe if there is any improvement.

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What can be burned in boilers with a gutter feeder?
Answer: Pellets can be fired in boilers with a gutter feeder.

Explanation: Pellets with granulation Φ 6-8mm

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Why does caking occur on the burner?
Answer: The burner is cauterized when the air supply is set too high.

Explanation: Reduce the blower power.

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Why is fuel combustion poor in boilers with automatic feeder?
Answer: Poor fuel combustion in boilers with automatic feeder results from poor selection of feeding times. Blower settings are incorrectly selected.

Explanation: Adjust fuel feed and/or blower (see table of settings). Call service.

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In a retort burner, the fuel burns only on one side of the combustion chamber?
Answer: In the retort burner, the fuel burns only on one side of the furnace because the burner air chamber is dirty. There is no seal under the retort flange or the fan is dirty.

Explanation: Clean the burner air chamber. Install the sealing cord. Clean the fan.

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What causes a cotter pin to break?
Answer: The reason for the cotter pin breaking is the fuel granulation not in accordance with the manufacturer's recommendations (a lot of stones in the eco-pea coal or a lot of sawdust in the pellets), wet fuel, caking on the burner.

Explanation:
Replace the eco-pea coal.
Sift the eco-pea coal, replace it.
Replace the pellet.
Dry the fuel.
Clean the burner.

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Why is the feeder motor running but not feeding fuel?
Answer: The feeder motor is running but not feeding fuel because the cotter pin is broken or the feeder screw is worn.

Explanation: Replace the cotter pin. Replace the feeder screw.

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Why is the blower not working?
Answer: The blower is not working because the plug may be unplugged. The boiler has overheated, the STB protection has been activated.

Explanation: Insert the blower plug into the socket. After the boiler has cooled down, press the STB button.

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Why does the feeder motor get hot?
Answer: The feeder motor is heating up because of a worn out capacitor.

Explanation: Replace the capacitor.

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Why does the feeder not work and the motor hums?
Answer: The feeder does not work and the engine hums because it is probably blocked, but the pin has not been broken. The cause may also be a worn engine capacitor.

Explanation: Open the cleanout window, remove the "foreign body", e.g. a stone. Replace the engine capacitor.

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What happens if the feeder temperature is exceeded?
Answer: To avoid flashback, the controller activates the feeder to push the fuel out of the feeder tube.
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What is the maximum feeder temperature?
Answer: The maximum feeder temperature is 80°C.
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Why is there water leakage from the convection channels?
Answer:
Fuel is burning too quickly due to:
- too large chimney cross-section
- too large air supply
- incorrect controller setting

Explanation: Close the dampers on the flue. Check the tightness of the door. Adjust the air supply. Adjust the controller or call the service.

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Why does the boiler “sweat” during initial start-up?
Answer: During the first start-ups, the boiler “sweats” because condensation occurs.

Explanation: We heat the boiler to a temperature of about 80oC and maintain it for at least 6 hours. If necessary, we repeat this operation.

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How long will a full tank of fuel last?
Answer: There is no single answer to this question. It can be assumed that a full fuel tank will last for 3-4 days.

Explanation:
The boiler's steady-state burn rate depends on:
- the calorific value of the fuel
- the degree of building insulation
- the type of installation: underfloor heating, radiators, boiler
- cleanliness of the boiler exchanger, ash content in the ash pan
- outside temperature
- temperature in the house
- combustion quality

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Why is smoke coming out of the boiler door?
Answer: Smoke is coming out of the boiler door due to lack of draft.

Explanation: Brick up tightly the entrance of the flue pipe to the chimney. Check the patency of the chimney and its parameters, whether they are in accordance with the recommendations.
Seal the outlet of the stove to the chimney pipe, preventing the intake of cold air. If the chimney cross-section is too small, an exhaust fan can be installed.

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Why does the boiler get tarred?
Answer: There are several cases where the boiler becomes tarred, e.g. wet fuel, poor combustion conditions, oversized boiler, low boiler temperature.

Explanation: Tightly brick up the flue pipe inlet to the chimney.

In the first case, wet fuel produces too low a temperature of the exhaust gases and, as a result, condensation of the exhaust gases. In such a case, not only the boiler is tarred, but also the chimney.
In the second case, there is usually simply too little air in the combustion chamber. Just add some air and the flame, the gases burn freely without precipitating carbon from the exhaust gases.
In the case of an oversized boiler, the temperature is achieved very quickly and, as a result, the boiler will be idle more often than not working. The result will be that the gases in the exhaust gases will not burn out, i.e. the boiler will become tarred.
Too low a boiler temperature is the worst mistake you can make. If the boiler is connected incorrectly to the installation, it is the thermostat in the house, which means that to reduce the temperature in the house, you have to reduce the boiler temperature. In this case, it is recommended to install mixing valves.

Burner problem

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The burner does not turn on
Answer:
- no power supply or boiler controller switched off
- gear motor fuse tripped
- overload relay tripped
- motor thermal switch tripped

Explanation:
- check power supply and main switch of electronic controller
- check and replace if necessary
- reset overload relay
- check switch and determine cause of its tripping

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The feed screw in the burner does not rotate despite the gear motor working
Answer:
- gear motor fuse tripped
- screw clutch disconnected from the gear motor
- screw not cleaned before the boiler operation ended

Explanation:
- check and replace if necessary
- replace the clutch insert and reconnect the clutch
- remove the screw, clean it, notify the manufacturer

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There is smoke coming from the tank
Answer: There is a leak in the entire system.

Explanation: Check whether the feeder flap is closed properly. Check the seals and screws of the feeder and burner, if necessary tighten loose elements.

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Auger feeder is empty (no fuel)
Answer:
- overload relay tripped
- no fuel in the tank or fuel hung above the feeder
- disconnected screw clutch from gear motor

Explanation:
- reset overload relay
- check fuel level in the tank and above fuel intake holes
- replace clutch insert and reconnect clutch

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There is frequent shearing of the wedge securing the worm
Answer:
- gear motor support not securely attached to the ground
- gear motor support not centered properly in relation to the worm

Explanation:
- improve and ensure permanent attachment
- check the alignment of the assembly and center if necessary

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Burnt end of the screw in the retort
Answer: Incorrect combustion adjustment.

Explanation: Adjust the correct combustion in the boiler according to the boiler operating instructions.

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The burner does not light the fuel
Answer:
- no fuel - check the tank and feeder to see if they are clogged
- starting dose too small - check the starting dose
- damaged igniter - check the heater
- damaged drive motor - check the motor thermal switch
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Checking the photosensor
Causes: The photosensors in the burner should be cleaned from time to time with a damp soft cloth. To do this, dismantle the housing by loosening the four mushroom-head screws in the REVO Mini - REVO Mini35 models, and three screws in the REVO 44 to REVO 150 models. Then remove the photosensor from the socket, clean it and reinstall it. After performing the above steps, install the burner housing in the reverse order.

Photosensor cleaning frequency: boiler rooms every 3 months
Measurement reading in the dark 0-5 units, in full light 100 units.

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Feeder sensor failure - alarm cannot be canceled
Causes: The most common cause of a fault is the destruction of the sensor's thermal protection, which in turn leads to overheating of the measuring element. If the fault cannot be cleared despite the burner cooling down, the measuring sensor should be replaced. In order to verify whether the sensor is damaged, its resistance should be measured, which should be between 1-5 Ω. The resistance of a damaged sensor is approximately 100 kΩ.
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Blower damage
Causes:
– blocked blower blades – unscrew the blower cover screws and check if they are not mechanically blocked
– check the voltage on the blower wires
– check the blower motor capacitor
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The boiler set temperature on the display is different from the programmed one.
Check:
- whether the DHW tank is not being loaded at this time and the DHW set temperature is set above the boiler set temperature, if so, the difference in the readings will disappear after the DHW tank is heated or the DHW set temperature is reduced
- whether the time intervals are enabled - disable the time intervals
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Additional feeder not working (module B)
Causes:
– check whether the feeder wires are properly connected to the terminals
– check whether the jumper is installed on terminals 1-2 of module B
– check whether the feeder motor is not damaged
– if you can hear the motor running but the fuel is not fed, check the feeder according to the feeder manual
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The fuel is not burnt, there are unburned fuel particles in the ash. The fuel burns with a lot of smoke, the burner goes out
Causes: Check the power modulation settings in menu → boiler settings → power modulation.
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In DHW pump mode = SUMMER the radiators are hot and the boiler overheats.
Causes: Increase the value of the parameter extending the DHW pump operation time to cool the boiler.
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In a hydraulic installation with a mixing valve and actuator – the mixer does not open.
Causes: The cause may be loading the DHW tank with the DHW priority enabled. Wait for the DHW to load or disable the DHW priority.

The cause may be the active SUMMER function.

The cause may be the activation of the return protection function (menu → service settings → boiler settings → return protection). If the return protection function is enabled – check whether the boiler water return sensor is thermally isolated from the environment. Improve the thermal contact between the sensor and the pipe by using thermal paste. Increase the boiler set temperature to provide a power reserve for heating the return water. Check whether the hydraulic installation is properly made, i.e. after closing the valve, the return temperature must increase above the value of the Min. return temperature parameter.

The cause may be the ongoing calibration of the mixer valve, wait until the calibration is complete. Active calibration is marked with the inscription, "CAL" in the INFORMATION menu.

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The burner starts but does not go to first power
Causes:
– too high starting dose – check starting dose
– dirty or faulty photosensor – clean or replace photosensor,
– damaged external thermostat in oil boilers or bakery ovens
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Internal feeder overheating.
Causes:
- burner contaminated with slag
- low chimney draft - use an exhaust gas extractor
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The display shows no signs of the device working despite being connected to the network
Causes:
- whether the mains fuses have not blown and replace them if necessary
- whether the cable connecting the panel with the executive module is connected correctly and is not damaged
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Feeder clogging
Causes: The internal feeder is designed to evenly mix and feed fuel. The internal feeder may become clogged due to:
- incorrect setting of the internal feeder in relation to the external feeder - increase the operating time of the internal feeder (service menu/burner feeder)
- damage to the gear motor - replace the gear motor
- incorrectly selected feeder operating interval - the value should not exceed 20s. (service menu/burner interval)
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The central heating pump is not working
Check:
– whether the boiler has exceeded the temperature above the CH pump activation temp. parameter – wait or reduce the value of this parameter
– whether the DHW priority blocking the CH pump is enabled – disable the priority by setting the DHW pump operation mode to No priority
– whether the CH pump is not damaged or blocked
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The fan is not working
Causes: Check whether the STB safety temperature limiter input jumper is installed on terminals 1-2, (the jumper should only be installed if the temperature limiter is not connected).

If the boiler manufacturer has equipped the boiler with an STB temperature limiter with manual return to the initial position, unlock it by unscrewing the cover and pressing the button according to the manufacturer's documentation.

Check and replace the fan if necessary.

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Fuel feeder not working/not feeding
Causes:
– check whether the feeder wires are properly connected to the terminals
– if the STB temperature limiter is connected to terminals 1-2, check whether the circuit has not been cut off due to boiler overheating
– check whether the feeder motor is not damaged
– if you can hear the motor running but the fuel is not fed, check the feeder according to the boiler instructions
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Temperature is not measured correctly
Causes:
- check whether there is good thermal contact between the temperature sensor and the measured surface
- whether the sensor cable is not running too close to the mains cable
- whether the sensor is connected to the terminal
- whether the sensor is not damaged - check
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The DHW pump works even if the DHW tank has already been loaded
Causes:
Set the parameter DHW pump operation time extension = 0

Boilers not included in the offer older than 2019.

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What is the maximum number of pumps that can be connected to one controller output in the SILVER and GOLD controller?
Answer: The maximum output load is 80-100W, so one.
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How do you manually feed fuel to the burner - SILVER or GOLD controller?
Answer: You should turn the boiler to OFF mode and then enter CONNECTION TEST and start the feeder until fuel appears in the burner. (MENU – CONNECTION TEST – Feeder – ON)
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How to check if the pumps are connected correctly?
Answer: You should turn the boiler OFF and then enter CONNECTION TEST and start the individual pumps.
MENU – CONNECTION TEST – CH Pump – On
DHW Pump – On
P3 Pump – On
Circulation – On
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What happens if the boiler overheats?
Answer: In order to quickly discharge water, the controller will start all pumps and open the mixing valve to the maximum; in the event of a higher temperature, the STB protection will activate and mechanically disconnect the fan/feeder.
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Why is the fan/feeder not working even though it is signaled on the display?
Answer:
– STB protection has been activated (wait for the boiler temperature to drop and press the white protection button)
– the power plug has been unplugged from the socket
– if the feeder is equipped with reverse, the switch position is set to 0
– the feeder/fan starting capacitor has been damaged (replacement required)
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What fuses are installed in the boiler?
Answer: 6.3 A glass fuse.
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Where should the ½ mixer sensor be placed?
Answer: The ½ mixer sensor should be placed after the mixing valve, after the pump.
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What are the automatic operation modes?
Answer:
The SILVER controller has the following operating modes:

S – ignition
N – normal operation
P – maintenance
D – afterburning/extinguishing

The GOLD controller has the following operating modes:
Ignition
Operation
Maintenance
Afterburning
Extinguishing

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What should the boiler hysteresis be?
Answer: The boiler hysteresis should be set in the range 1-5.
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Which room thermostat does the controller support?
Answer: The controller supports any traditional two-wire normally open/normally closed room thermostat.
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Which contacts should I select in a room thermostat?
Answer:
In the SILVER controller:
For FL310: NC and COM
For FL310A and FL310 (found in the SMART boiler): NO and COM
In the GOLD controller: NO and COM
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How does a room thermostat work?
Answer: If the hydraulic system has a mixing valve with an actuator, the room thermostat will lower the central heating circuit temperature by the value selected in MENU→CH→Room regulator reduction when the set temperature is reached. If there is no valve with an actuator, the room thermostat will disconnect the central heating pump when the set temperature is reached. In such a case, MENU→CH→Mixer actuator must be set to NO.
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What should be the relationship between the boiler temperature and the central heating and domestic hot water temperatures?
Answer: It is recommended to maintain a difference of at least 15 degrees between the set boiler temperature and the central heating and domestic hot water temperature.
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What is the difference between the eco-pea coal program and the pellet program?
Answer: In the case of the eco-pea coal program, the controller performs the maintenance function. In the case of the pellet program, maintenance is omitted.
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Why can't I change the anti-lock value?
Answer: The eco-pea coal program is selected. This function is only for pellets and does not work with eco-pea coal.
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How to increase fuel supply?
Answer:
SILVER Controller:

The parameter defining the amount of fuel fed in the combustion process is the parameter feeding 100%
Menu→Burner
If too little fuel is fed, this time should be extended.

GOLD Controller:
The parameter defining the amount of fuel fed in the combustion process is the parameter feeding in the cycle
Menu→Burner
If too little fuel is fed, the percentage of feeding in the cycle should be increased

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How should we understand cycle administration?
Answer:
Determines how much time from the feeder cycle parameter the feeder feeds fuel.

Example:
- feeder cycle 20.0 s
- feeding in a 20% cycle
- actual feeding = 20*0.2=4s of feeder operation

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Why does the boiler light up but not enter operation mode?
Answer: The boiler controller considers the ignition attempt to be successful if the exhaust sensor detects a temperature 5 degrees higher than the boiler temperature. If, despite the combustion chamber being lit, the boiler continues to attempt to ignite, you should:
– check whether the exhaust sensor is in the flue pipe
– check whether the exhaust sensor is dirty, if dirty, the sensor should be mechanically removed
– clean the boiler
– if the boiler is equipped with draft swirlers, remove one of them
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Why does knocking occur on water grates in top-loading boilers?
Answer:
- knocking on water grates in hopper boilers means that the boiler is not level
- local boiling of water on the grates
- no water circulation
Explanation:
- level the boiler
- check the water circulation
- check if the pump is working
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Hold down the ON/OFF button for 3 seconds.
Answer: Hold down the ON/OFF button for 3 seconds.
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What is the boiler alarm temperature?
Answer: The boiler alarm temperature is 90°C.
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Where is the STB sensor located?
Answer: The STB sensor is located under the black cap on the right side of the display.
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Why does the controller not start when I turn the rocker switch to position I?
Answer: If the switch starts to light up after setting it to position I, check the fuse and the fuse socket located under the switch.
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Where should the CO sensor be placed?
Answer: The CO sensor should be placed downstream of the CO pump.
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Where is the lambda probe located?
Answer: The lambda probe is located in the boiler flue, connected by 4 wires in a black cover. If missing, the probe socket is sealed with a rubber cap.
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What do the question marks where the temperatures are displayed mean?
Answer: The controller does not "see" the sensor, this is due to:
- sensor damage (replacement required)
- disconnection of the connector (to check, unscrew the cover above the controller and check whether the connector is connected to the controller)
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How to change the minimum return temperaturę?

Answer: You should activate advanced settings, then go to measurements in the controller and at the very bottom change the minimum return temperature. It is not recommended to set the temperature lower than 30°C.

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How to allow more hot water into the central heating circuit?
Answer: If you have a manually controlled mixing valve, set the knob to a higher scale. If you have a mixer actuator:
In the SILVER controller - in the CO menu, change the target temperature
In the GOLD controller - in the CO1/CO2 menu, change the target temperature
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How and where to connect a room thermostat?
Answer: In the case of a boiler model with a rear outlet for sockets, the thermostat is connected to the socket. In the case of a model without outlets for connection, unscrew the service cover and connect the thermostat wires directly to the controller strip.
In the SILVER controller: Connect the wires to the Reg.Pok and GND sockets to the controller module
In the GOLD controller: Connect the wires to the REG.POK1/REG.POK2 and GND sockets to the controller module.
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Why does my room thermostat work backwards?
Answer: The wrong contacts have been selected in the thermostat. In this case, change NO → NC / NC→NO
If the thermostat does not allow changing the contacts, change the operating mode from heating to cooling. See also the room controller manual)
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What temperature and hysteresis should I set for DHW?
Answer: In most cases, the DHW temperature is 45 and the hysteresis is 5. These values can be freely modified by the user.
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How do I start grilling?
Answer: We change the settings:
Menu→Burner→Fuel→Grate
And then we start the boiler in automatic mode. It is forbidden to open the ash pan door to create draft. The air for the combustion process is supplied by the fan.
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Why can't I change the hold feed/standby and blower run values?

Odpowiedź: Wybrany jest program pellet. Ta funkcja jest tylko do ekogorszku, nie działa ona przy pellecie.

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What is a feeder cycle?
Answer: The feeder cycle applies to the GOLD controller. The feeder cycle determines the feeder operation time and standstill time.
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Why do “rocks” form when burning pellets?
Answer: This is due to poor fuel quality.
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What should the firing times be?
Answer:
SILVER Controller:
For pea coal:
Ignition – 0 min
Blower + igniter 6 min
Fire test 4 min
For pellet:
Ignition – 0 min
Blower + igniter 4 min
Fire test 2 min

GOLD Controller:
For pea coal:
Ignition – 6 min
Fire test – 4 min
For pellet:
Ignition – 4 min
Fire test – 2 min

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How much should the initial application be?
Answer: The initial pass should be 25s.
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What can be burned in boilers with a gutter feeder?
Answer: You can burn different fuels in boilers with a gutter feeder thanks to three operating modes.

Explanation:
First - eco pea coal
Second - pellet, in this program you can burn pellets, cereal grains, seeds, small chips and everything that is small granulation.
Third - grate, in this program we use wood and coal.
Of course, if we burn eco pea coal or pellets we can simultaneously burn on the upper grate, adding a little wood or coal.

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