Hermann gas equipment is designed for heating large areas. Double-circuit units additionally supply housing with hot water. The equipment is equipped with convenient controls with a display. If a malfunction occurs in the system, a code is displayed on the screen that indicates the cause of the failure. We list all error codes for the Herman gas boiler in the table.
Probable errors and causes of occurrence
This article contains all possible malfunctions and options for eliminating them, as well as error codes for Hermann boilers.
All information is read in the following order: code - name - possible malfunction. If you have any additional questions, please leave them in the comments to this article. The content of the article
- Error code E01 - Flame error
- Error code E02 - Protection thermostat error
- Error code E03 - Error in the safety valve that controls smoke removal
- Error code E05 - Heating temperature sensor is damaged
- Error code E06 - Hot water temperature sensor malfunction
- Error code E09 - Signal for maintenance required
- Error code E10 - The sensor indicates a lack of pressure
- Error code E11 - (for Hermann SE models) Blocking of the smoke exhaust device
- Error code E18 – Filling the heating system with water
- Error code E19 – Water filling was not completed within the allotted time period
- Error code E21 – Reduced water pressure in the heating system
- Error code E22 – Memory data inconsistency
- Error code E24 – Safety thermostat error
- Error code E33 – Incorrect configuration of electrical connections
- Error code E35 – No flame registration
- Error code E36 – General fuse tripped
- Error code E38 – Damage to the external temperature sensor
- Error code E39 – Heat exchanger frozen
- Error code E42 – Microprocessor problem
- Hermann Habitat boiler error codes
- Error code 01 - The burner was not turned on or the flame went out
- Error Code 05 - Touch Temperature Sensor Error (System Temperature Sensor)
- Error Code 06 - Touch Temperature Sensor Error (DHW Touch Temperature Sensor)
- Error code 10 - Insufficient water pressure indicated by the sensor on the bottom of the boiler (0.5 bar or lower)
- Error code 33 - Cabling system configuration defect (electrical installation)
Error code E01 - Flame error
You can fix this problem yourself. The flame of the gas burner probably went out unexpectedly or did not light up again. You need to use the Reset button for the boiler to start working. If the attempt is unsuccessful, you need to check the opening/closing of the gas supply, as well as whether it is in the cylinder.
Incorrect electrical supply – At the moment of error 01 on the display, use the Reset button to restart the boiler. If the fault remains, it is recommended to check for correct phase, ground and neutral connections. If connected incorrectly, the unit may not detect the flame, even during the heating process. The neutral is probably in a state of imbalance.
Error code E02 - Protection thermostat error
Due to overheating, the protection thermostat turned on. You can fix this problem yourself. The screen usually displays the following message: restarting. Turn off the Herman boiler, wait for it to cool down and press the Reset button. In case of repeated cases, contact the service organization.
Error code E03 - Error in the safety valve that controls smoke removal
The safety valve that controls the smoke removal has turned on. Incorrect smoke removal occurred. Possibly related to gusts of wind. You should use the Reset button. If error 03 occurs frequently, it is recommended to check the chimney.
Error code E05 - Heating temperature sensor is damaged
Contact your service organization.
Error code E06 - Hot water temperature sensor malfunction
The following message will light up on the device screen: service. You should contact a service organization.
Error code E09 - Signal for maintenance required
The unit signals that maintenance is required. It is recommended to invite specialists. In this case, the boiler will continue to operate normally. Press the key and the problem will disappear for a while. But if this operation has to be used more than three times, then error 06 will be displayed constantly.
Error code E10 - The sensor indicates a lack of pressure
In the case of error 10, it is necessary to check the air bleed valves on the radiators, as this sometimes affects the pressure drop in the system.
Error code E11 - (for Hermann SE models) Blocking of the smoke exhaust device
The device responsible for smoke removal is blocked. You should contact a service organization.
Error code E18 – Filling the heating system with water
This problem is resolved automatically. When the pressure in the system drops, the unit is filled with water from the water supply. You should wait for the cycle to complete and the fault should go away. If the pressure does not return to normal three times in 24 hours, the unit will be blocked and errors with code E19 or E21 will appear. In this case, you should contact a service company.
Error code E19 – Water filling was not completed within the allotted time period
The red indicator will start flashing and show the inscription: service. In this case, you should contact a service organization.
Error code E21 – Reduced water pressure in the heating system
Already completed three automatic recharges within 24 hours. This is mainly due to the fact that air remains in the system. There may also be a coolant leak. It is recommended to contact a service organization.
Error code E22 – Memory data inconsistency
Call a technician. The following message lights up on the screen: service. It is recommended to contact a service organization.
Error code E24 – Safety thermostat error
It is possible to solve the problem yourself. The temperature under the boiler is increased. The protection thermostat must control its level to ensure safety from possible damage to the floor covering. In such a situation, the unit will be blocked from the heating function, but will work stably on DHW. When the floors have cooled down, you need to reset the thermostat and press the Reset button. The command can be executed with a 30 second delay. If these steps do not solve the problem, you should contact a service company.
Error code E33 – Incorrect configuration of electrical connections
In case of this malfunction, it is recommended to contact service.
Error code E35 – No flame registration
This problem resolves itself. If the protection component detects a flame when there is no flame, it locks the device. You should use the Reset button. If the Herman boiler is blocked again, you need to contact a service organization.
Error code E36 – General fuse tripped
The user can fix this problem himself. If the fault reappears when you press the reset button, you should call a specialist.
Error code E38 – Damage to the external temperature sensor
It is recommended to contact a service company.
Error code E39 – Heat exchanger frozen
Call a specialist. This malfunction occurs if the water or heating sensors record a temperature below 0 degrees. The unit begins to supply water to the system, and if the temperature does not increase by one degree within 15 minutes, the problem will remain. It is recommended to contact a service organization.
Error code E42 – Microprocessor problem
May occur due to overheating of the return. You should contact the service company.
If you are not 100% sure what exactly the problem is and that you can solve it, immediately contact the service center to diagnose and fix the problem.
#26 2010-11-21 20:38:10
Re: Repair of double-circuit boiler Hermann Habitat 2
Hello EVERYONE! I have a Hermann Habitat 2-24SE boiler. The problem is that sometimes all 3 LEDs go out (the 220V boiler is on), but the display works and is illuminated (the display shows the temperature, but the heating and hot water icons are missing) . Accordingly, the boiler does not work. It can remain in this state for 1-2-3 hours, then the green LED lights up (constantly on) and the boiler starts working. In this situation, only disconnecting from the network for 20-30 minutes will help. Help me figure out what's wrong.
Last edited by wad712102 (2010-11-27 13:49:01)
Hermann Habitat boiler error codes
Consider the list below to be aware of possible errors in heating boilers specifically from the Hermann Habitat brand and to correct the problem in time.
Error code 01 - The burner was not turned on or the flame went out
Incorrect combustion. Operation can be restored by turning the Summer/Winter knob to the unlocked position until the red indicator goes out.
Error Code 05 - Touch Temperature Sensor Error (System Temperature Sensor)
One of the temperature sensors is out of order. Contact a service technician for troubleshooting (system temperature sensor).
Error Code 06 - Touch Temperature Sensor Error (DHW Touch Temperature Sensor)
One of the temperature sensors is out of order. Contact a technician for troubleshooting (DHW temperature sensor).
Error code 10 - Insufficient water pressure indicated by the sensor on the bottom of the boiler (0.5 bar or lower)
Restore the required coolant pressure in the system (optimally: 1–1.5 bar in a cold system) by opening the make-up valve. Do not restore pressure while hot, as the pressure will decrease when the system cools. Keep in mind that under normal conditions the pressure should not decrease. If this happens, there may be a leak in the heating system. Sometimes such losses are so small that they do not leave obvious traces, but over time they can lower blood pressure. Also, opening the manual air bleed valves on radiators (either intentionally or unintentionally) reduces the pressure in the system. Make sure this doesn't happen.
#27 2011-01-14 12:45:51
Re: Repair of double-circuit boiler Hermann Habitat 2
Good afternoon Please help. with the following problems: 1) is the behavior of the Habitat 2 boiler normal, when when you turn on the hot water, hot water periodically runs, then after 1-2 minutes it runs almost cold. Somehow he stops warming it up for this time. Maybe something needs to be adjusted there. 2) and now the coaxial + green LEDs are constantly on and do not reset to operating mode (I checked the pressure, the gas too, the power switches too, the pump also did not jam)
#30 2011-01-17 12:56:24
Re: Repair of double-circuit boiler Hermann Habitat 2
Hello! I have been using HABITAT 2 23 E for the sixth year and every winter I have one problem - the red LED lights up. It happens that it works for 2 weeks without problems, but sometimes 2-3 times a day it becomes an error. Previously there was protection against high voltage in the network, now I have installed an uninterruptible power supply unit with a battery. I thought there would be fewer problems - but no. The boiler was serviced every year at the beginning of winter. The master came and twirled something, cleaned something, and as luck would have it, no such problems arose in his presence. Once the serviceman changed the “thermostat for controlling the removal of products”, the problem remained, then at the end of last season he moved it from its regular place along with the bracket 5-7 cm to the side (but for some reason he did not screw it on, but simply hung it on the boiler lid). There are fewer errors. On New Year's Day I worked for two weeks without problems and now it all started again - an error every day. I can’t keep an eye on him all the time (I’m often away). Need advice or, if necessary, a master. The warranty has expired.
#331 2014-02-02 23:53:44
Re: Repair of double-circuit boiler Hermann Habitat 2
Anatoly writes:
Aleks_Assa writes:
Dynamit writes:
Put it on the third one and you will be happy.
Thanks, what other ideas do you have? To remove the lid, you need to disassemble the cabinet in which the boiler is built. If there are no other options, you will have to.
What ideas are you looking for? A specialist told you what to do. Why are you fooling people?
Some other ideas. Opening the lid showed that the circulation pump is set to max. speed.
During the experiment, I set the adjustment to 1. The pump is running, the temperature has dropped to 35-36 degrees. But the temperature of the pump itself is such that it is unpleasant and hot to hold with your hand.
What to do next ? How to check the pump? Is he to blame? Or should I just call a serviceman?
Last edited by Aleks_Assa (2014-02-03 00:16:21)
