House, design, repair, decor. Yard and garden. Do it yourself

House, design, repair, decor. Yard and garden. Do it yourself

» Installation instructions for air conditioner with an inverter compressor. Installing the air conditioner with your own hands: Installation Tips

Installation instructions for air conditioner with an inverter compressor. Installing the air conditioner with your own hands: Installation Tips

Mora Top S.R.O. acquired approximate K. modern appearance Characteristics in 2000 as a subsidiary of a joint stock company under similar name - Mora Moravia.. But at the beginning of the last century, one of the boilers of the above-mentioned enterprise was manufactured in the number of hundreds of thousands of units per year. By the way, it was the METEOR boiler that became the world's first heating equipment, the manufacture of which took place abroad under a license agreement. The Soviet government in 1924 decided to produce this type of boilers in St. Petersburg (then Petrograda).

In 2003, Mora Top received independence, which was strengthened in 2004 with the beginning of the construction of a new plant. In the spring of 2006, the production and technical base of the Mora Top enterprise acquired the outlines of today. But the plans of the company's leadership include the commissioning of additional production lines, which will lead to an increase in the amount of products produced by more than three times. However, now the production capacity of the plant allows you to produce about a year of thousands of thousands of water heaters per year and about fifty thousand gas boilers.

The amount of products and its qualitative indicators cause the fact that the heating equipment "Mora Top" extends not only in the territory of the Czech Republic, but also goes to export to Romania, Bulgaria, Poland, Slovakia and to countries that once constituted Soviet Union.

The commodity range of the enterprise consists of the categories below: Gas wall boilers - Titan (can be embedded with additional equipment, has a working capacity - 14.8 kW, immune to electricity drops, equipped with safety systems providing full operation of operation); electric boilers - Electra 8 (smart electric boiler, which is controlled by a microprocessor panel and can work more than ten functional modes; power from 2.5 to 7.5 kW); Water heaters accumulative indirect heating - 100 NTR (are a water-heating supplement to heating boilers); Cumulative combined water heaters - E 100 NTR (besides the ability to get hot water from the energy of the heating boiler, they can heat it through the built-in electrical element); Wall water heaters Gas flow - Vega (very compact, produced with a capacity of 17.3 to 26.4 kW); Outdoor gas boilers with atmospheric burner - SA 20-60 (Classic series, fourteen different types with a capacity of 15 to 50 kW); Flooring boilers with a superior burner - VL100 - VL750 (sixteen types of power from 103 to 750 kW).


Gas walls boilers Buderus.
Models Logamax U042, U044, GB072, GB172. With open I. closed chamber combustion. Methods of repair and service, adjustment of operating parameters. Maintenance recommendations.
Gas heating boilers Vaillant.
Models: Outdoor Atmovit Exclusiv, Wall Condensation Ecotec Plus. Service, maintenance, settings for functional components. Hydraulic schemes.
Gas walls boilers ARISTON.
Models Clas, Clas Evo, Genus. Recommendations for repair, maintenance and service. Troubleshooting errors and faults. Setup and adjustment methods.
Gas boilers Immergaz
Models Eolo Star, Eolo Mini, Nike Star, Nike Mini, Mitos. Repair and adjustment. Installation, Installation and Connection. Settings operating modes and additional equipment.
Boilers Kentatsu Furst.
Wall-mounted models Nobby Smart. Condensation SMART CONDENS. Outdoor Sigma, Kobold. Solid fuel Elegant, Vulkan. Faults and error codes. Description and characteristics.


Mora's boilers - malfunction and repair

Why could there be a pressure in the Mora Top wall cup?

You most likely leakage water from the system. Check for a tightness of the heating system, the device itself and the fuel assembly.

In the operation of Mora, peered water in pipelines. Can I manually add water to the system so that the device continue to work without filling with water from the system?

Water, which in your case is a coolant, is located in a pressure boiler. If the design of the heating system assumes the presence of a trigger crane, then through it you can swap so much water without any problems as it is necessary (preferably served through the filter softener). It is possible to carry out this either from a high-pressure highway, or use any pump.

My gas boiler Mora 5110 is connected. When I run it, there is a clear explosion of gas. I think there are two reasons for this. Loading the signal to the ignition electrode. Too strong gas pressure on the device startup. When mounting the boiler there were difficulties with its installation in the heating system (natural circulation). But all the problems were solved. 7 years of impeccable work evidenced. Then during the thunderstorm lightning brought several boards, including on the unit. Specialists of the service center Only with the third attempt were able to repaid something on the board so that he earned. There was no problem all the winter. And then the above-described causes of gas explosion began. After that, it shows E2 error. After his complete de-energization (physically disconnecting from the outlet), it is a day, or even more works as usual. And it can start "explode" again. In any case, an E2 error is the result of such an unit. DHW I did not use so far, since I had no sewage. There were also problems with a valve supplying water on heat exchanging (hydraulic). Tell me, can I fix the device without changing the fee?

You did not take another possible reason. Perhaps your boiler is being served too enriched mixture (little air, a lot of gas). The reason for this lies in violation of thrust or poorly organized supply ventilation. Error E2 In your case indicates exactly the bad craving. We recommend to check and chimney.

The client cannot launch the Mora Titan 14SK gas boiler. Caused me. I repaired the duct sensor and gas valve. And it turned out to be launched to work, I left. The unit worked exactly a day and stood again. What could I miss? Data on the device. It is in operation for about three years. But of them worked with just a couple of months last year. This year it could not be connected. Worked exclusively by liquefied gas (There was only 1 balloon 50 l.). Inlet pressure 20 bar. The spinner burns well. The duct sensor is correct, the membrane of the mustache, the springs are not broken. The device was able to run after the rotation of the plastic adjustment shaft of the duct sensor (closed completely the window in the membrane chamber). I also found that the main gas-burner It is properly started when the equilibrium is achieved between the gas pressure and the pressure of the coolant. He offered the client to put another balloon, as I think that 20 bar is not enough. Feedback has not yet received. The client lives far away, and before going, I want to figure out the problem as much as possible. Who can tell what other settings or adjustment can I produce?

In the unit installed gas-water fittings MERTIK. But the point is still not in the balance sheet, since your unit is essentially modified by the boiler. The case at the very consumption of water, with which the system should work (rod, shifting under the pressure of water, opens the gas supply).

Gas malfunction double-circuit boiler Mora 5106. It was purchased in 2008 and from the very beginning, his work was very unstable. The last modernization was a replacement of 20 mm metal pipes By 25 mm polypropylene, to eliminate too fast heating and disconnecting the machine. And so repeated many times a day. At the same time, some batteries remained cold. After this modernization, the device began to work stably on low heat (without inclusions and off). But the nuance arose: before he worked freely at a pressure of 1-2 bar, now it shows the error E1. Raise up to 2 bar - again the same error. And if you open and immediately close the crane with hot water, he starts working. But it may again stop the error E1 (2.5 bar pressure). I write in detail about the pressure, since this malfunction I associate with it. If you raise pressure up to 3 bar, the valve opens. At the same time, if the unit has already earned and heated water to the desired temperature, then it works without problems, even with not very high pressure. The problem is that. In the morning, after the shower, it is necessary
To see if the device did not give an error, then if the error is, open and close the crane. Wait for it to turn on to work, make sure that it is not going to turn off. What can you do with it?

Most likely, such a problem happens because of a dirty rod or an old membrane. Since your device is not equipped with a pressure sensor, then that it shows, you can not pay attention. More important principle Duch sensor operations in your unit. And yet, it has been working for many years, and, it is desirable, it is still to carry out its full maintenance, and especially the weekend hydroblock. Also check the pressure of the expansion tank (no more than 1.0 - 1.2 bar).

A single-mounted wall boiler Mora Top burned the heat exchanger shirt. It has been working for 9 years. Is it normal?

Put the pay and solder it with a refractory solder.

Installed meteor plus. When he was in work, we turned off gas. Now, when trying to start, an E1 error appears. How can I remove it?

Restart it.

Mora's top is connected. There appeared sensor error in gVS mode. The boiler published clicks, but could not flare up. In October, the replacement of the vortex sensor on the DHW circuit was made. Three months everything was without problems. Now when the feed is included cold water, It works 12 seconds and turns off. Pause 10 seconds. And then everything from the beginning. Water does not have a homogeneous temperature: it can barely warm, then very hot. From the primary contour to the heat exchanger, the water comes with 70 degrees (now frosts), and water barely heats. Problems with heat exchanger?

Most likely, the heat exchanger is very clogged. Especially if overheating with sufficient pressure. If you have a three-way valve with hydraulic drive, it does not switch it in any way.

Yesterday I checked the sensor marked with an arrow, and found out that the rod was moving. Disconnected the temperature sensor from the wires and the device showed an E4 error, but at the same time continued to warm the water slightly. Does I checked the sensor?

Under the red arrow, a duct sensor is usually installed.

In operation since 2015, I installed and connected the boiler Mora top Sirius. For some reason, it began to turn off spontaneously (up to several times a week). Displays an E9 error. Several times called the service, but the result is zero.

Repair or replacement of the gas valve with an electronic unit is required.

Mora Top Proxima-20 KK boiler. I discovered a malfunction of my device, conducted it with diagnostics, an error "Thread the boiler" appears. I looked at the instructions. There is a list of possible reasons: a dirty filter, breakdowns of the pump or emergency thermostat. Currently, its work is carried out on a cycle: a minute in work, three on a pause. The reverse tube is barely heavily. Batteries, those that are not far from the device - hot, and remote - cold. To solve the problem, I drained the water and re-pumped pressure into the expansion tank. Then filled with water system. The problem did not solve. If you watch the thermomanometer reading, the water scale shows everything as needed, and the temperature testimony is equal to 0, despite the fact that the water itself is very hot. If DHW works, then all the batteries begin to warm the same well. Does the problem solve the installation of the room thermostat? If so, what is better suitable for my system?

The thermostat will not help you, check the control board or valve. And replacing the board priority.

The Mora 5112 gas boiler, began to work in switching on mode - shutdown. For a minute, he can smoother several times and start. And every day an error E2 appears (about two times a day). Rarely pops up error E5. How can this be repaired?

Check the power supply (phase, zero, ground). Adjust the valve settings. Clean the burner and heat exchanger. As an extreme option - replacement of the board.

Already nine years, my house is heated by the Mora Top gas boiler. Never have any special problems with him until last year when problems with the ignition began. Cleaned the ionization electrode, and the problem is gone. I have a single-monistore thermostat, which controls heating (opens and closes the three-way valve, which has only two positions: open / closed). The coolant never changed, and the dirt merged not regularly. Its temperature is mounted by a rotary regulator mounted on the body of the apparatus. Now the main problem is overheating the coolant when it is overlapped by the battery. Previously, the device was turned off very rarely (once in winter). There is a problem early
in the morning. It is when the thermostat is shut off the water supply to radiators. If the setpoints are the temperature of the coolant 75s, then in a couple of minutes it heats the water to 98c, though its work stops. Next follows an error. If the temperature is installed in 60s, the overheating is already up to 85C. And the emergency shutdown sensor no longer reacts. Since, I am preparing the device for winter, then I wanted to know the following: whether it is necessary to clean, or, possibly change to a new, temperature sensor. What to do with the emergency shutdown sensor? Where else could be clogged and requires cleaning? Do I need to redo the strapping of the unit? Does it make sense to change the drive of the three-way valve to weather-dependent, so that the battery is turned off step by step?

In your case, several reasons are possible: a heat exchanger has been scored. Because of this, poor heat dissipation and, accordingly, overheating. But this is only if the device is heated with extraneous sounds (crack and tapping). It may have accumulated precipitated on the sleeve in which the sensors were installed. Therefore, they with strong intake determine the temperature. You need to disassemble and clean. And also, the room thermostat is desirable to connect, as it should be appropriate, and not to the 3-chassing valve.

Mora's boiler broke. The pressure in it is absent, and, accordingly, it does not start to work. If you open the water supply valve on the pipe, then the pressure, if you believe the pressure gauge, does not grow. After some time, water follows from the unit along the discharge tube. With what it can be connected?

No manometer is not working - he has a fitting. And the water follows from the safety valve.

We carry out the maintenance of the boiler Mora Top. Yesterday poured all heat exchangers with hydrochloric acid. Left to endure until the morning. Then everything was rinsed and installed them in his place. The same problem. When the DHW is working, the temperature and the burner is turned off. And so several times. What should I look for a fault? The pump did washing the primary heat exchanger, and the secondary soaked for a day. Then one and a half hours washed them under pressure. And the primary heat exchanger was immersed in Soda's solution and kept there for several hours. There is a pressure, heat exchangers are precisely clean. Before washing, there was the same problem: when the DHW is turned on to work, there is a slow rise in temperature and disabling the device. In order to figure out the error, I removed the protection against tact. And immediately clearly saw that it overheats. If the temperature is exceeded on more than 10 degrees, the device turns off the burner. Maybe the reason in the gas valve that does not respond sufficiently to change the temperature and does not lower the power burned? And another question on heat exchangers. I understand that if obstruction in the secondary heat exchanger, it does not heat in the DHW. And if the primary is scored, what is this expressed?

If the DHW is still being heated and a good pressure is saved, then your problem lies in a faulty temperature sensor. It is also possible to fail the board, or the incorrect gas settings. There are two ways to overheat water when writing water on economic needs. With normal water pressure. Then the boiler when parsing on the GWS goes into operation at maximum power. The pressure is set as recommended by the manufacturer, but too small duct speed. Normal gas duct, but the maximum pressure is too high. Gas and, respectively, overheating too much. If you do not have a duct in a secondary heat exchanger (that is, it is so badly scored), then the device will not be able to switch to the DHW. After opening the filing crane hot water The duct sensor simply does not work. If the water is at least a little bit, and its speed is enough to trigger the sensor, it starts working in the DHW mode. But since the duct is too small, then even
Correctly adjusted maximum gas supply, strong overheating will happen. There may be two options at the same time: and the flow is small and the gas pressure is Great. There is still a nuance, with a clogged secondary heat exchanger, water supply can go unevenly (pulses). With this option, water on household cranes will be cold, then hot. In a place where a narrowing is observed, the flow rate drops sharply and strong overheating begins. The pressure in this place is greatly increasing (due to the pressure on the use of water). And so everything is repeated, therefore the temperature of the water is not constant. But not only the heating of water changes, but also its consumption. Visually note this phenomenon is impossible, but this is enough to
Water entered the shops with unpleasant temperatures. And it turns out that he is clocking.

There are problems with the boiler Mora 5118. When the hot water flows the gas burner, it turns on, it turns off. The same phenomenon is observed when working on the heating system. It also happens when the burner is launched, a strong crackling is distributed. What to do with it and is it to be repaired? He himself replaced the condenser by 0.68 Igf, but it did not solve this problem. I noticed that a particularly strong sound is distributed when I start the heating system after using DHW. If the analysis of the water is not used for a long time, then when the cod heating system is not audible.

Pay attention to the valve, it can give such a crack. Check for temperature sensitivity adjustment on your board (there are two types). If it is available, then reduce the values.

Fracking outdoor gas boiler Mora per 40 kW. For some reason he began to disconnect himself. And when starting, strong cotton is distributed. What is it, can automatics? What time will it cost us?

The problem is most likely not in automation. And the fact that the burner itself was inflamed and contaminated. Perhaps improper components.

The meteor boiler 18 kW, according to the incomprehensible reason, does not keep pressure. What could be a breakdown?

Look for leakage (tightness is broken).

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Borino, ZHMZ, Siberia, Alpha Kalor, thermal engineering.
Adjustment gas automatic EUROSIT 630. Replacing the thermocouple and maintenance of the ignition burner.

MORA boiler error codes (Mora)

List possible errors and faults arising from the operation of the Mora boiler

Errors and malfunctions of the electric boiler Mora ELECTRA series with direct heating.

Less serious malfunctions are flashed with a yellow-diode "ALM", which flashes with a frequency of 1 Hz, if the fault is not liquidated. The code of the current fault is determined by the rotation of the switch. When the fault has occurred, the boiler continues to damn, but with less comfort, as it will automatically switch to work in a lower operational system (SO1, SO2). In operational systems SO1, SO2, SO3, remote signaling is performed by opening the contacts of the RM13 relay. Fault - code 13 is alarmed if a critical reduction in the electrical, insulating resistance of one or more heating elements in the boiler housing will occur. The code image lasts 10 sec., After that, the magnitude of the operational time of the heating elements is depicted. Software Electrocotel Determine this heating as a critical reduction in electrical, insulating resistance, if there is no requirement from the thermostat TUV, TV, or an outer sensor. When generating a malfunction with code 13 Regulation circulating pump Danched by a parameter for Temperature Support ID 66.

1. Fault code 08. Without breakdown, normal operation, the boiler drives and shows a working condition.

2. Fault code 09. Faulty sensor for measuring the temperature of the DHW.

3. Malfunction code 10. Faulty sensor for measuring outdoor temperature.

4. Fault Code 12. The modem is not affordable - weak signal.

5. Fault code 11. Cascade line is broken.

6 . Malfunction code 13.. Disruption of insulation of heating elements.

If the malfunction has been serious, the working alarm is turned off and the malfunction code is depicted using LED diodes. The indication of the fault arise is expressed by a constant yellow luminaire LED "ALM". The boiler stops moving and the boiler power will turn off the maximum in 9 seconds. All functions are disabled. Only the ketag of the pump remains active! The ketaging of the pump is not performed if the number of the fault code 01. In the operational systems SO1, SO2, SO3, the alarm is performed by opening the contacts of the RM13 relay. After returning residual heat from an electric heat exchanger, the pump will turn off if the ID 66 parameter is greater than the current water temperature in the boiler. If the time counting method is set, the pump is turned off after the end of the time delay (ID 65 parameter).

1. Fault code 01. Pressure loss.

2. Fault code 02. Overheating boiler.

3. Fault code 03. RESERVE.

4. Fault Code 04. Defective sensor for measuring water temperature in the boiler.

5. Fault code 05. Defective EEPROM memory unit.

6. Fault code 06.Defective RAM + RTC memory unit.

7. Fault code 07.Defective control potentiometer.

Errors and malfunctions that are possible during the operation of Mora W. boilers

Troubleshooting can only be carried out by a trained contractual service organization and it is also obliged to record in an application to the guarantee leaf.

1. After turning on the boiler, the check light is not lit on the main switch.

2. Replace the switch.

2. The boiler cannot be put into operation - the ignition electrode for the ignition of the ignition burner does not spark.

Possible reasons Faults:

1. Malfunction of automation.

3. Fault electrode.

Methods for troubleshooting:

1. Control of the unmistakable connection of the electrode with the Vn output (high voltage) on the automation.

2. Replace automation.

3. Replace the electrode.

3. The boiler cannot be commissioned - sparking flows at the spark interval of automation (the sound of anti-automation is heard) (natural gas).

Possible causes of malfunction:

1. The spark gap is poorly configured.

2. Bad connection of the conductor to the electrode or a faulty electrode.

Methods for troubleshooting:

1. Customize the spark gap.

2. Schedule the state of the eletolod and the attachment of the ignition and grounding conductors.

4. The boiler does not ignite - the ignition burner is lit TS \u003d "50" sec (in the network module the "Unlock" button is lit).

Possible causes of malfunction:

1. Gas drive to the boiler was interrupted.

2. In the gas tube air.

3. Gas valve does not open.

Methods for troubleshooting:

1. Gas pressure control in gas drive.

2. Control of the opening of the gas valve of the boiler.

3. Remove air.

4. Replace the valve.

5. The boiler began and quickly went out (the "Unlock" button lights up in the network module).

Possible causes of malfunction:

1. The poor attachment of the reinforcing and phase conductors.

2. Bad diameters of gas nozzles in the burner.

3. An impassable filter of pollution at the inlet of the gas valve.

Methods for troubleshooting:

1. Control and replacement of the terminal connection U-phase conductor terminal N-conductor reinforcement.

2. Schedule if the diameter of the nozzles in the main burner corresponds to the values \u200b\u200bspecified in the instruction manual.

3. Clean the gas valve filter.

6. The boiler does not ignite - the safety thermostat on the control panel in the network module lights the label of insufficient temperature.

Possible causes of malfunction:

1. Lack of water in the system.

Methods for troubleshooting:

1. Monitoring water pressure in the system and if necessary, the addition of water.

2. Contact the TV in the network module.

7. A boiler for economic purposes is attached to the boiler for the proposed scheme and heating of water for economic purposes does not occur first.

Possible causes of malfunction:

1. Bad joining the three-way valve "Honeywell V 4044F"

2. Bad three-way valve.

Methods for troubleshooting:

1. Check the addition of Vintel.

2. Replace the valve.

8. A boiler for economic purposes is attached to the boiler for the proposed scheme and water for economic purposes is not heated to the required warmth.

Possible causes of malfunction:

1. Poor temperature setting on thermostats.

2. Bad temperature sensor or heater or boiler thermostat.

Methods for troubleshooting:

1. To configure.

2. Replace the faulty safety or regulatory element.

9. Blinking of the fuse of the combustion product reverse current (on the control panel in the network module, the signal light of the temperature is reduced).

Possible causes of malfunction:

1. Strong wind causes back pressure.

2. The chimney is clogged.

Methods for troubleshooting:

1. To delete the combustion reverse current fuse - unlocking is available in the network module on the TS control panel.

2. Slend smoky pipe and unlock fuses of the backbone product combustion using the TS button.

10. After turning on the boiler, the control light is not lit on the main switch.

Possible causes of malfunction:

1. At the entrance to the boiler there is no voltage.

2. Fault light bulb.

Methods for troubleshooting:

1. Schedule the voltage in email. Outlet.

2. Replace the switch.

11. The boiler cannot be commissioned - the ignition electrode does not spark.

Possible causes of malfunction:

1. Malfunction of automation.

2. Interrupted the drive to the igniting electrode.

3. Fault electrode.

Methods for troubleshooting:

1. Replace automation.

2. Control of the unmistakable connection of the electrode with the VN output (high voltage) on the automation.

3. Replace the electrode.

Repair of Mora's boilers in Ufa

This article contains all the likely faults and options for their elimination, as well as error codes for Mora's boilers (Mora). All information is read as follows: Code - Name - possible malfunction. If you have any additional questions, please leave them in the comments to this article.

If you are 100% sure what exactly the problem is and in the fact that you can decide to decide - immediately contact service center To diagnose and troubleshoot a malfunction.

Check the price and buy heating equipment And you can have accompanying goods. Write, call and come to one of the shops in your city. Delivery throughout the Russian Federation and CIS countries.

Error code E0 - Device blocked

  1. There is no gas supply. The burner is not active. The pump is turned off.
  2. Broken internal elements of the control unit and regulation. Replacement required.

E1 error code - boiler blocked

Error code E1 may occur in the following cases:

  1. There is no closure of switches. In this regard, gas is not served, the burner is not active, the pump is turned off.
  2. Small amount of water in the heating system. Perhaps a clogged filter. It is required to clean it.
  3. Small amount of water in the heating system. Pumping pump. Replacement required.
  4. Little water in the heating system. Pump, instead of the steps recommended by the 2nd or 3rd, installed on the first. Set the correct mode.
  5. The presence of air traffic jams. It is required to download water so that the recommended pressure value has been installed in the system. Switching the heating mode and DHW, lower the excess air. Reload the unit.
  6. Problems with the axis of the duct switch, it is or low-lifted, or completely fixed. It is required to disassemble the switch of the switch from the enclosure of the duct sensor. Try freeing the jammed axis. If it does not work with the on and off of the boiler, push it with your finger.
  7. Too much gap between the axis and the shoulder of the movement and switch. It is necessary to correctly set the position of the plastic shoulder of the movement.
  8. Broken switch. Replacement required.
  9. The electrical connection circuit between the switch and control unit is broken. Restoration of the chain is required. Check the wires.

Error code E2 - Mora's boiler stopped by accident

Error code E2 may occur in the following cases:

  1. Gas feed broken. After the flame is turned off, the device is trying to start again. The pump does not turn off until the device attempts to get started. Then gets up.
  2. The flame went out, as there is no gas supply. Press the RESET button. Due to the fact that the burner is strongly contaminated, gas supply is difficult. In this case, you can observe a partial burning of the flame. It is necessary to clean the gas supply hole.
  3. The electrode is broken or the electrical connection line is damaged. Replace.
  4. Bloomed the warehouse transformer or damaged electrical compounds. Replace.
  5. Lack of or partial contact in the chain of the electrical outstanding transformer and control unit and control. Check for contact if you want to restore.
  6. The phase and zero on the network is confused. Connect the boiler correctly.
  7. The reverse thrust fuse has worked as a result of too much temperature lifting due to leakage of combustion products. This is possible with complete or partial obstruction of the chimney. Clean the pipes with taps and chimney. To start pressing the RESET button.
  8. Bloomed fuse reverse thrust. Replacement required.
  9. Damaged chain of the power supply of the reverse thrust fuse. Check connection. Restore.
  10. Lack of contact between the reverse thrust of the control unit. Restore contact.
  11. Worked the emergency thermostat, since the temperature of the heating water exceeded the maximum allowed value.
  12. Improper gas supply. Find out the reason. Eliminate.
  13. Breakdown of an emergency thermostat. Check his work. With 95 degrees, he must open. If necessary, install a new one.
  14. There is no contact of the electrical compound of an emergency thermostat. Check and eliminate.
  15. Bad or lack of contact between the emergency thermostat and control unit and control. Check if you need to replace.
  16. The ignition electrode is set incorrectly. Set correctly, considering that the distance between the electrode end and the plate is 3-4 mm.
  17. Gas valve has not opened. The result - the flame was gone. To diagnose, you need to check the contact of the main gas valve convector in the control unit. Replace if necessary.

Error code E3 - open the heating water temperature sensor

  1. The device does not turn on in both modes. The gas supply to the burner is broken, as a result, there is no flame, the pump is not included.
  2. Broken heating water sensor. Replacement required.
  3. There is no contact at the sensor. Check the connection.
  4. Problems with a chain of electrical connection of the temperature sensor. Check and eliminate.
  5. There is no contact between the temperature sensor and the control unit and control. You need to restore contact.

Error code E4 - do not climb the temperature sensor for the household water

Gas boiler Mora works in both modes. Instead of the sensor responsible for the temperature of the household water, the heating temperature sensor starts to work. Accordingly, problems arise with the adjustment of the desired temperature in the DHW circuit.

  1. Faulty DHW sensor. Replacement required.
  2. No contact with temperature sensor. Check and restore.
  3. There is no contact in the temperature sensor electrical connection circuit. Check and restore.
  4. There is no contact between the temperature sensor and the control unit and control. Requires contact.

Error code E5 - breakdown in the security module

The unit is stopped by an accident. With this error, the burner is turned off, the disappearance of the flame due to the gas supply disorders. The pump at the same time works continuously.

  1. The emergency thermostat is triggered, since the temperature of the heating water exceeds the maximum maximum value. This overlaps the supply of gas. To eliminate, it is necessary to understand why overheating occurred.
  2. Breakdown of an emergency thermostat. It is necessary to check its work, at temperatures below 95 degrees, it must be closed. If the breakdown is confirmed, replacement is required.
  3. Emergency thermostat electrical connection chain breakdown. Checking and restoring work.
  4. There is no contact between the emergency thermostat and control unit and control. Troubleshooting is required and recovery.
  5. There is no pressure switch connections. It is necessary to check the permeability of the way of removal of combustion products or supply of clean air. Eliminate the problem.
  6. Broken pressure switch. No connection with it when the fan works. You need to install a new switch.
  7. Problems in the chain of the power switch. Check and restore chains.
  8. There is no contact between the pressure switch and the control unit and control. Restore contact.
  9. The tube connecting the pressure switch and the fan, or disconnected, or was damaged. You must check and put a new one if required. Perhaps the fan does not start its work.
  10. Engine does not work. The bearing of the impeller has lost its mobility.
  11. The valve does not work because of any mechanical damage. With this problem requires checking and replacing the fan.
  12. There is no contact of the chain of the fan electrical compound. There is no set of speed of rotation of the fan blades. Check and eliminate.
  13. There is no contact between the fan and the control unit and control. To set up a contact.

Possible breakdowns of gas boilers Mora that are not displayed on the screen

In addition to error codes, which displays the Mora heating boiler screen in case of faults, there are damage that the screen does not determine, but the timely repair of the unit is still required.

The device cannot dial the power required for operation.

At the same time, the water temperature in the DHW or the heating does not rise to the set value.

The boiler has always rises in the minimum power mode

Problems in the chain of the electrical connection modulator on the coil. Check the cable and contact in the control and control unit. Warmer of the modulator on the coil. To eliminate this problem, a complete gas valve replacement is required. The unit is not configured, the minimum and maximum power is installed with an error. Repeated parameter data is required.

The device does not work in DHW mode

  1. The burner does not turn on, there is no water heating. Weak water supply to household needs.
  2. The diploma filter is heavily polluted. It requires its cleaning.
  3. Differential valve is strongly polluted. It requires its cleaning.
  4. Water supply pressure is lower than required. To eliminate the problem, it is necessary to increase the water supply pressure.
  5. With sufficient water pressure on the DHW, the three-way valve does not switch. Check the passage of water between the differential valve and the three-way valve. If necessary, carry out cleaning.
  6. There was a sticking of the 3-way valve. Try to fix the problem by turning on and off the water supply to the DHW. In case of unsuccessful of this procedure, install a new valve.
  7. Perhaps a violation of integrity membranes In the hydraulic part of the three-way valve. It is required to install a new one.
  8. Water supply is carried out sufficiently, the three-way valve switches from the mode to mode. Check the gap between the axis of the 3-way valve, the shoulder of movement and switch.
  9. Maybe he is too big. Required adjustment.
  10. DHW switch breakage. Replacement required.
  11. The problem in the chain is the electrical connection between the switch and the control unit. Restore chain.

At the Wall Boiler Mora's problems with DHW, working burners heating water on economic needs is missing or insufficient

  1. With a good pressure of water supply and water in the cranes is not heated to sufficient quantity. The problem is in a strongly contaminated secondary heat exchanger. It is necessary to clean it.
  2. After heating water Heats up to the required temperature, the pressure increases to two and a half bar. After that, the safety valve is triggered, and part of the water is reset through it. At the same time, when the water in the heating system is cooled, the pressure drops lower than the maximum allowable minimum value.
  3. Problems with expansion Baku. It is possible a violation of its tightness. And you need to check the valve, and if it is damaged, install a new one. After that, you need to download the pressure set by the factory manufacturer.
  4. Damaged membrane in expansion tanks. It is required to install a new expansion tank.
  5. Water supply pressure on economic needs is so great that it increases the pressure in heating system up to two and a half bar. It is necessary to check the valve on the hydraulicone to replenish the heating system, it may be open.
  6. When operating the device, air traffic jams are not removed in automatic mode. The cap is too tightened on the valve. Check it, if necessary to unscrew.