Mora 5110 does not turn off the ignition. DIY gas boiler repair. When operating, the boiler always switches to minimum power mode
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Mora's Cauldron - Error Codes and Their Meanings
Possible breakdowns gas boilers Mora Top, which are visible on the display
Error E0- The device is blocked. There is no gas supply. The burner is not active. The pump is turned off. The internal elements of the control and regulation unit are broken. Replacement required.
Error E1- The boiler is blocked. The switches do not close. Due to this, gas is not supplied, the burner is inactive, and the pump is turned off. Small amount of water in the heating system. The filter may be clogged.
Problems with the axis of the flow switch, it is either inactive or completely motionless. It is necessary to disassemble the switch box from the flow sensor housing. Try to free the jammed axle. If this does not work by turning the boiler on and off, push it with your finger. The gap between the axle and the drive arm and the switch is too large. The position must be set correctly
plastic arm for transmitting motion. The switch is broken. Replacement required. The electrical connection between the switch and the control and regulation unit is broken. The chain needs to be restored.
Check the wires. Error E2
- Mora's boiler was stopped due to an accident. The gas supply is interrupted. After the flame is turned off, the device tries to start again. The pump does not turn off while the device is trying to start working. Then he gets up. The flame went out because there was no gas supply. due to too high a temperature rise due to leakage of combustion products. This is possible with complete or partial obstruction of the chimney. Clean the outlet pipes and chimney. To start, press the reset button. Also, error code E2 may occur in the following cases: The reverse thrust fuse is broken. Replacement required. The electrical connection circuit of the reverse thrust fuse is damaged. Check connection.
Restore. Lack of contact between the control unit backdraft fuse. Restore contact. The emergency thermostat tripped because the heating water temperature exceeded the maximum allowed value. Incorrect gas supply. Find out the reason.
Eliminate. Emergency thermostat failure. Check its operation. At 95 degrees it should open. Install a new one if necessary. There is no electrical connection contact for the emergency thermostat. Check and fix. Poor or no contact between the emergency thermostat and the control and regulation unit. Check and replace if necessary. The ignition electrode is not installed correctly. Install correctly, taking into account that the distance between the end of the electrode and the plate is 3-4
mm. The gas valve did not open. The result is that the flame goes out. For diagnostics, it is necessary to check the contact of the main gas valve convector in the control unit. Replace if necessary.- The domestic water temperature sensor is not closed. The Mora gas boiler operates in both modes. Instead of the sensor responsible for the temperature of the domestic water, the heating temperature sensor starts working. Accordingly, problems arise with regulating the required temperature in the DHW circuit. Also, error code E4 may appear in the following cases: The DHW sensor is faulty. Replacement required. There is no contact with the temperature sensor. Check and restore. There is no contact in the electrical connection circuit of the temperature sensor. Check and restore. There is no contact between the temperature sensor and the control and regulation unit.
Contact needs to be restored. Error E5 - Failure in the security module. The unit was stopped due to an emergency. With this error, the burner turns off and the flame goes out due to a gas supply interruption. The pump runs continuously.
connecting the pressure switch and the fan was either disconnected or damaged. It is necessary to check and install a new one if necessary. Perhaps the fan does not start working. The engine does not work. The impeller bearing has lost its mobility. The valve does not work due to any mechanical damage. If this problem occurs, the fan must be checked and replaced. There is no contact in the fan electrical connection circuit. There is no set speed of rotation of the fan blades. Check and fix. There is no contact between the fan and the control and regulation unit. To set up a contact.
Possible breakdowns of Mora Top gas boilers that are not displayed on the screen
The device cannot gain the power required to operate- In this case, the temperature of the water in the hot water supply or for heating does not heat up to the set value.
The Mora Top boiler always switches to minimum power mode when operating- Problems in the electrical connection circuit of the modulator to the coils. Check the cable and contact in the control and regulation unit. The modulator on the coil is broken. To resolve this issue you need complete replacement gas valve. The unit is not configured; its minimum and maximum capacities are set incorrectly. Re-adjustment of these parameters is required.
The device does not work in DHW mode- The burner does not turn on, there is no water heating. Poor water supply to economic needs. The DHW filter is very dirty. It needs cleaning. The differential valve is very dirty. It needs cleaning. Water supply pressure is lower than required. To fix the problem, you need to increase the water supply pressure. With sufficient water pressure to Three-way DHW the valve does not switch. Check the water passage between the differential valve and the three-way valve. Clean if necessary.
If this procedure is unsuccessful, install a new valve. The integrity of the membrane in the hydraulic part of the three-way valve may be damaged. A new one needs to be installed. The water supply is sufficient, the three-way valve switches from mode to mode.
Check the clearance between the 3-way valve shaft, the motion transfer arm and the switch. Perhaps it's too big. Adjustments are required. Damage to the DHW switch. Replacement required. The problem is in the electrical connection between the switch and the control and regulation unit. Restore the chain. The Mora wall-mounted boiler has problems with hot water supply; the working burner does not heat water for household needs or is insufficient
- If the water supply pressure is good and the water in the taps is not heated to sufficient quantity. The problem is a heavily contaminated secondary heat exchanger. It needs cleaning. When the boiler is operating, water leaks out through the safety valve..
The following problems occur during operation of the device. After the heating water has heated to the required temperature, the pressure increases to two and a half bar. After this, the safety valve is activated and part of the water is discharged through it. In this case, when the water in the heating system cools, the pressure drops below the maximum permissible minimum value. Problems with the expansion tank. There may be a violation of its tightness. And it is necessary to check the valve, and if it is damaged, install a new one. After this, you need to pump in the pressure set by the manufacturer. The membrane in the expansion tanks is damaged. Need to install new expansion tank The water supply pressure for household needs is so high that it increases the pressure in the heating system to two and a half bar.
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It is necessary to check the valve on the hydraulic unit to replenish the heating system; it may be open. When the device operates in automatic mode, they are not deleted.
air jams . The valve cap is too tight. Check this and unscrew it if necessary. Borino, ZhMZ, Siberia, Alfa Kalor, Termotechnik.
Adjustment
gas automation
Wall-mounted, double-circuit. Repairs, adjustments and malfunctions.
Settings for functions and modes.
Deluxe Coaxial, Deluxe Plus, GA models. Errors and problems. Work with remote control
Xital. System control. Adjustment of work by temperature and pressure. Our company offers its services for urgent repairs boilers for equipment located throughout Moscow and the Moscow region. We carry out troubleshooting professionally, quickly, efficiently, according to
affordable prices , with a guarantee. The AIS company currently has more than 10 years of experience in boiler repair and can offer not only simple boiler repairs, but also annual maintenance and repair of breakdowns of any complexity. Our engineers and craftsmen have a wealth of knowledge and skills, as well as
professional tools
without which boiler repairs cannot be carried out professionally.
We offer boiler repair:
High-class specialists with extensive experience;
- Processing your call regarding boiler repair as soon as possible;
- You will immediately find out over the phone the price for the repairs being carried out; we answer openly and honestly from the very beginning;
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- Diagnosis of faults is carried out using only professional tools;
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service center
will repair any faults; for them there are no difficult tasks that cannot be solved.
The professionals of our company will repair the boiler as quickly as possible, 90% in one visit.
Common causes of malfunction leading to boiler repair:
The installation of the heating system was carried out unprofessionally and did not comply with the conditions; - failure to comply with the manufacturer’s recommendations for the operation of heating equipment;- the necessary technical manipulations are not carried out
service which must be carried out annually;- additional ones are not used
protective equipment
for example a voltage stabilizer.
Common boiler malfunctions and repairs:
The flame in the burner goes out when the unit starts;
A lot of soot is formed;
Loud popping noises are heard when the equipment is operating;
If you have problems with the operation of your boiler equipment, call us, the specialists of our company will come to you urgently in order to repair heating boilers from any manufacturer in the shortest possible time. Specialists constantly improve their knowledge and increase their experience by going out to repair heating boilers of any degree of complexity.
AIS company always strives for fruitful cooperation with its clients. Personal approach to each client, discounts, competently performed complex work, guarantees for work.
Modern gas boilers are quite complex technological equipment. With proper care and proper handling, the gas boiler will serve for a long time without any failures. However, even the most expensive and functional equipment has its own resource, after which it begins to appear. various kinds malfunctions.
Knowing the main causes of problems and the procedure for eliminating them, you will be able to repair your gas boiler with my own hands. This is a very painstaking, responsible, but in most cases relatively uncomplicated work.
First of all, it is necessary to establish why any malfunctions may occur in the operation of gas heating boilers. A number of different factors can lead to problems.
Electricity
Modern gas boilers are equipped with various automation equipment. These products, in turn, are powered by electricity. And, despite the fact that it is already the 21st century and systems for using alternative sources energy, the problem of stability of power grids remains relevant for many regions, especially for remote villages and all kinds of holiday villages.
A sudden shutdown or a strong surge in electricity is one of the main enemies of any modern gas boiler.
To avoid all the associated troubles, buy a high-quality stabilizer in advance. Do not spare money to purchase this device - cheap models are of little use, so it is better to immediately allocate funds to purchase a good stabilizer from famous manufacturer. Rest assured, if the automation breaks down, you will spend much more money on its repair and replacement.
Water
Often used at home wall models gas boilers. Such devices are simultaneously responsible for heating the premises and preparing hot water.
The design of wall-mounted boilers includes a flow-through heat exchanger. Low-quality hard water with various inclusions is the main enemy of the gas boiler heat exchanger. Moreover, under the influence of low-quality water, the heat exchanger can fail in just one season.
To prevent such damage, install special filters. The best option– a complete water purification system. With it, your boiler will work for as long as possible, and using purified water is much safer for your health.
Installation errors
Any knowledgeable person will tell you: installation and wiring of gas heating equipment should be carried out exclusively by qualified specialists.
Even the slightest mistakes at the stages of installation and connection of equipment can lead to irreversible consequences. For example, incorrectly performed piping in the case of a cast-iron gas boiler with a power of more than 50 kW will lead to the fact that the unit will simply crack at low temperatures.
Therefore, if you are not an experienced gas installer, entrust the installation of the boiler to professionals - this way you will save yourself from many problems in the future.
Weather
Adverse atmospheric conditions can also lead to many different problems. During frosty winters, people turn the heating on almost all the way full power. This leads to a significant decrease in pressure in the gas pipeline system. As a result, boilers cannot reach their full potential.
You will not be able to solve this problem on your own - you still cannot explain to your neighbors that their actions are only aggravating the situation. As a solution to the problem, you can install an additional boiler that runs on a different fuel.
Is it worth repairing the boiler yourself?
A modern gas boiler is a complex and potentially dangerous system. The main danger of such units is the risk of a gas explosion in case of improper handling of the equipment or untimely elimination of various problems.
Various types of automation are responsible for maintaining the operation of the gas boiler at an optimal level. An inexperienced user is often unable to understand its structure. Therefore, to resolve serious problems, it is better to immediately invite specialists.
On your own, you can try to eliminate only visible damage and various contaminants that have led to the failure of the pipe, chimney and other parts of the boiler.
There are a number of typical problems that, in most cases, you can fix yourself. Problems will also be listed, in the event of which you can only protect yourself until a specialist arrives.
If there is a distinct smell of gas or smoke in the room, immediately turn off the boiler and leave the room, opening it for ventilation.
Call a specialist immediately. Trying to solve a gas leak problem on your own without the necessary skills is extremely dangerous and unwise.
Flame sensor failure
If the combustion sensor or gas supply pipe is broken, turn off the boiler, close all gas valves and allow the unit to cool completely.
After some time, return to the room to check for the smell of gas. If everything is fine with the draft, try turning the boiler on again. If there is no traction, immediately call a repairman.
Boiler overheating
Overheating is one of the most common problems with modern gas boilers. The reason for this may be a malfunction of automation equipment or a clogged heat exchanger.
Automation repairs cannot be handled without the appropriate knowledge.
You can clean the heat exchanger yourself. The most common materials for the manufacture of heat exchangers are copper and stainless steel. There are usually no problems cleaning them, but still be extremely careful.
To clean the heat exchanger, simply remove it and thoroughly clean it with a wire brush. In case of copper heat exchanger, it is better to replace the brush with a metal sponge used for washing dishes.
Charge fan malfunctions
The problem with fans is their bearings. If your boiler fan stops developing the set number of revolutions, try to fix the problem as soon as possible.
To do this, remove the back of the fan, remove the stator and lubricate the bearings. Machine oil is perfect for lubrication, but if possible it is better to use a higher quality carbon composition with heat-resistant properties for this purpose.
An interturn short circuit can also cause problems with the fan. Only a specialist can cope with troubleshooting this problem. Submit the stator for repair to replace the winding, or immediately replace the faulty unit with a new device.
Chimney problems
Often, various problems in the operation of a gas heating boiler are caused by excessive clogging of the coaxial chimney.
Remove the chimney and thoroughly clean all its components of soot. This way you will not only return the previous level of efficiency of the unit, but also significantly increase the efficiency of the boiler.
Errors and malfunctions of Mora Top gas boilers
Malfunctions of Mora Top gas boilers with indication on the display
Error E0- The boiler does not work
Gas does not pass through the gas fittings, the burner has gone out, the pump does not work.
Malfunction internal element control and regulation unit - Replacement of the control and regulation unit.
Error E1- Wall-mounted boiler Mora Top does not work
The switch does not close. The gas fittings do not open the gas passage, the burner does not ignite, the pump does not work.
1. Lack of water in the heating system, the heating water filter is clogged - Clean the filter.
2. Lack of water in the heating system, defective pump - Replace the pump.
3. Lack of water in the heating system, the pump is set to stage 1 - Set the pump to the recommended stage 2 or 3.
4. Lack of water in the heating system, there is air in the system - Add water to the recommended pressure. De-air the heating system by switching between heating and domestic water heating modes.
Turn the boiler off and on again using the ON/OFF button.
between the axle, the drive arm and the switch - Correct the position of the plastic drive arm.
7. Defective switch - Replace the switch.
Check the wires. 8. The electrical connection circuit between the switch and the control and regulation unit is broken - Check the contact of the connector in the control and regulation unit. Check the wires to the switch.
- Mora Top wall mounted boiler does not work
The burner goes out as a result of a disruption in the gas supply through the gas fittings. When the flame goes out, the next ignition attempt occurs.
The pump runs until the next ignition attempt, then stops.
3. Electrode malfunction - the electrical connection line is broken - Replace the electrode.
4. Faulty ignition transformer or broken electrical connection line - Check and replace the ignition transformer.
5. Incomplete or broken contact in the electrical connection circuit of the ignition transformer and the control and regulation unit - Monitoring the contact of the connector in the control and regulation unit.
6. Incorrect phase connection when connecting the boiler to the electrical network - Make the correct phase connection.
7. Disabling the reverse draft fuse when the temperature is exceeded as a result of leakage of combustion products (partial or complete obstruction of the chimney) - Control of the patency of the combustion paths - exhaust pipes or chimney. To resume the boiler function, press the RESET button.
8. Defective reverse thrust fuse - Replace the fuse.
9. The electrical connection circuit of the reverse thrust fuse is broken - Check the electrical connection line.
10. The contact in the connection between the reverse thrust fuse and the control unit is broken - Check the contact of the connector in the control and regulation unit.
11. Disabling the emergency thermostat as a result of exceeding the maximum heating water temperature. Gas supply to the burner is interrupted - Find out the reason for the water overheating.
12. Defective emergency thermostat - Monitor the emergency thermostat (must be closed at temperatures below 95°C), replace if necessary.
13. Violation of the electrical connection circuit of the emergency thermostat - Monitoring the electrical connection line.
14. The contact in the connection between the emergency thermostat and the control and regulation unit is broken - Check the contact of the connector in the control and regulation unit.
15. Incorrect position of the ignition electrode - Check the position of the electrode. The distance between the end of the electrode and the burner plate should be 3-4 mm.
16. Loss of flame due to failure to open the main gas valve - Check the contact of the main gas valve connector in the control unit.
Eliminate. Emergency thermostat failure. Check its operation. At 95 degrees it should open. Install a new one if necessary. Replace the defective valve.
- Heating water temperature sensor is open. The Mora Top gas boiler does not work either in heating mode or in domestic water heating mode.
The burner flame goes out as a result of a disruption in the gas supply through the gas fittings; the pump does not work.
4. The contact in the connection between the temperature sensor and the control and regulation unit is broken - Check the contact of the connector in the control and regulation unit.
mm. The gas valve did not open. The result is that the flame goes out. For diagnostics, it is necessary to check the contact of the main gas valve convector in the control unit. Replace if necessary.- The domestic water temperature sensor is open - The Mora Top gas boiler continues to operate in heating mode and in domestic water heating mode.
The temperature control function is taken over by the heating water temperature sensor - problems with maintaining the temperature of the service water.
1. Malfunction of the domestic water temperature sensor - Replace the temperature sensor.
2. The connection contact of the temperature sensor is broken - Check the connection contact.
3. Temperature sensor electrical connection circuit failure - Monitoring the electrical connection line.
4. The contact in the connection between the temperature sensor and the control and regulation unit is broken - Check the contact of the connector in the control unit.
Contact needs to be restored.- Malfunction on the safety module - Mora Top boiler does not work.
The burner flame goes out as a result of a disruption in the gas supply through the gas fittings; the pump runs continuously.
1. Disabling the emergency thermostat as a result of exceeding the temperature of the heating water. Stopping the gas supply to the burner - Find out the cause of overheating.
2. Defective emergency thermostat - Monitor the emergency thermostat (must be closed at temperatures below 95°C), replace if necessary.
3. Violation of the electrical connection circuit of the emergency thermostat - Monitoring the electrical connection line.
4. The contact in the connection between the emergency thermostat and the control and regulation unit is broken - Check the contact of the connector in the control unit.
5. Non-connection of the pressure switch - obstruction of the combustion products outlet or air supply - Eliminate the cause of the obstruction of the combustion paths.
6. Defective pressure switch - when the fan is turned on, it does not connect - Replace the pressure switch.
7. Violation of the electrical connection circuit of the pressure switch - Monitoring the electrical connection line.
8. Contact is broken in the connection between the pressure switch and the control and regulation unit - Check the contact of the connector in the control unit.
9. Fallout or damage to the tube connecting the pressure switch and the fan - Check, if necessary, replace the tubes.
10. Fan does not accelerate, burnt out motor, hardened impeller bearing, mechanically blocked valve - Check the fan functions, replace if necessary.
11. Violation of the fan electrical connection circuit - the fan does not accelerate - Check the electrical connection line.
12. The contact between the fan and the control and regulation unit is broken - Check the contact of the connector in the control unit.
Malfunctions of Mora Top gas boilers without indication on the display
The boiler has insufficient power - the temperature of the heating or service water does not reach the set value
The Mora Top boiler operates constantly at minimum power.
1. Violation of the electrical connection circuit of the modulation coil - Monitoring the supply cable of the modulation coil. Monitoring the connector contact in the control and regulation unit.
2. Defective modulation coil - Replacement of the gas valve.
3. The maximum and minimum boiler power are incorrectly adjusted - Adjust the maximum and minimum boiler power.
The Mora Top wall-mounted boiler does not heat domestic water - the burner does not light
A. A small flow of domestic water.
1. The domestic water filter is clogged - Clean the domestic water filter.
2. The differential valve is stuck - Clean the differential valve.
3. Low water pressure - Increase water pressure.
B. The service water flow is sufficient, but the 3-way valve cannot be adjusted.
1. The tubes between the differential valve and the 3-way valve are clogged - Clean the connecting tubes.
2. Hardened three-way controlled valve - Swing the valve by turning the service water on and off. Replace the 3-way valve.
3. The diaphragm in the hydraulic part of the three-way valve is cracked - Replace the diaphragm.
B. The flow of domestic water is sufficient, three-way valve rearranged.
1. Large gap between the axis of the rearranged three-way controlled valve, the movement transfer arm and the switch - Adjust the movement transfer arm.
2. Defective domestic water switch - Replace the switch.
3. Violation of the electrical connection circuit between the switch and the control and regulation unit - Check the contact of the connector in the control and regulation unit.
The Mora Top wall-mounted boiler does not heat the domestic water insufficiently or does not heat the domestic water at all - the burner is on
There is sufficient water flow low temperature household water.
The secondary heat exchanger is stuck in the hydraulic unit - Clean the heat exchanger.
Heating water flows out through the safety valve
A. After heating the heating water, the pressure in the heating system will increase by 2.5 bar - the water flows out through the safety valve; When the heating water cools, the pressure will decrease - less than the filling pressure.
1. Gas leak from the expansion vessel - Check the valve on the expansion vessel, replace it if necessary; increasing the pressure to the recommended value.
2. The membrane in the expansion vessel is cracked - Replace the expansion vessel.
B. The pressure in the heating system is increased by 2.5 bar due to the domestic water pressure.
The valve on the hydraulic unit for adding water to the heating system is not closed - close the valve.
The boiler does not ventilate well
The cap on the purge valve is tightened - Check the cap on the purge valve. He must be released.
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Device and internal structure, which Czech gas boilers Mora Top have, made it possible to create heating equipment new generation, optimally meeting European and domestic standards.
The Mora manufacturer's line includes wall-mounted and floor-mounted units, differing in different technical characteristics, operating principle and performance.
Description and characteristics of attachments
Single-circuit and double-circuit wall-mounted Czech gas Mora boilers Top have three basic modifications:
The single-circuit and double-circuit gas wall-mounted heating boiler Mora Top has a built-in programmer, a unit with which you can set work program a few days in advance.
Review of Mora floor standing boilers
Mora Top floor-standing gas heating boilers are presented in more than ten modifications, the main difference of which is the type of burner and combustion chamber used.
To increase performance and heat transfer, it is recommended to use antifreeze. Heat exchanger and internal organization designed taking into account the use of this liquid as a coolant.
As practice shows, the Czech water-heating energy-independent floor-mounted instantaneous gas heating boiler Mora Top is optimal solution for heating country houses. Lack of complex automation, electricity-dependent components, high performance– all this distinguishes the equipment of this series.
Carrying out installation work
Mora gas appliances are designed in such a way that installation and maintenance of boilers are as simple and easy as possible. All volatile models have a self-diagnosis function. Information about all violations is displayed on the LCD display. The boilers are equipped with Mora equipment. As a result, automation, burner and other components ensure stable and long-term operation.Commissioning and adjustment of the boiler is carried out as follows:
- Volatile boilers are connected to the network. The self-diagnosis function starts automatically. The controller checks the presence of pressure in the heating system and gas pipeline. When deviations are found, a signal is issued in the form digital value. After troubleshooting, the boiler starts up.
- Non-volatile units do not have self-diagnosis functions, automatic flame ignition, etc. Therefore, before starting up and putting the equipment into operation, the company representative must ensure that all installation recommendations are followed. It is mandatory to install a water treatment system and a safety group; you may need to connect an expansion tank and a circulation pump.
Czech Mora gas boilers generally start up without any difficulties, but there are exceptions, mainly related to transportation or installation problems.
One of the common malfunctions of a double-circuit boiler is the failure of the thermocouple. After replacement, the functionality of the equipment is fully restored.
Why is it worth buying a Mora brand boiler?
Mora's boilers have something that other manufacturers often miss - an understanding of the complexities and peculiarities of working in domestic conditions. A potential buyer is also attracted by the possibility of choosing a suitable model.Presented by a huge the lineup: from 15 to 750 kW. Can be selected completely automatic installation and a classic boiler without complex automation. Simple rules operation also ensures the popularity of Czech Mora models.
