Is Immergaz boiler out of order? Is operation blocked and errors appear on the display? Do not worry, as the security system reports a problem. What to do? Look in the manual and find out the code designation. If the instruction is lost or you do not understand the technical language, then refer to our publication. We have readily described the errors of Immergaz boilers.
Operation and installation of Immergas boilers
The Italian manufacturer of heating equipment Immergaz is aimed at all segments of the population. From a wide range you can choose the model of "Economy Class" or high-tech devices at a high price.
The equipment is adapted for operation with unstable pressure in the gas line - up to 3 mbar. The design is equipped with the following components and parts:
- Gas burner with electric ignition;
- Circulation pump from the company "Grandfos". The technique has established itself as reliable and quiet;
- Bypass with regulation system protects the heat exchanger from overheating;
- A reed switch measures the temperature of the coolant flow;
- Anti-freeze mode. If the temperature drops to 4 degrees, the boiler starts automatically. Then maintained constant heating at 40 degrees;
- In the presence of an outdoor thermostat. It can be connected as desired.
The range includes conventional convection models as well as condensation ones. The latter are characterized by increased efficiency of more than 100%. By design, there are single-circuit and double-circuit units. Combustion chambers - open and closed type.
Provides protection against scale. When heating is complete, the pump does not stop. For about 3 minutes, he pumps cold water through the system, removing the heat load.
Errors and malfunctions
The equipment is not insured against breakdowns. If you saw the error code, you can find its meaning and solutions in the table below. First of all, it is recommended to restart the boiler in order to eliminate a system failure. If the symbols are displayed again - proceed with the repair.
Codes mistakes for Immergas Eolo Star / Mini | What do they mean | How to do it yourself |
01 | No ignition. The operation of the boiler is blocked. | The burner ignites automatically. If ignition does not occur after 10 seconds, release the lock. To do this, press the Reset key. This happens after a long downtime. Release excess air from the system and start re-ignition. |
02/12 | Overheating has occurred. The thermostat disables operation. Problems with ignition. | Wait until the temperature drops, restart the unit. Diagnose:
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03 | A signal was received from the exhaust gas sensor. | Inspect:
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04 | Electromechanical contacts are under high resistance. | Make sure the safety thermostat and pressure sensor are working. Close the contacts of both elements. If this fails, contact a service center to diagnose the electronic board. |
05 | The NTC temperature sensor in the heating circuit is not functioning. | Sensor check, wiring, pin tightening. |
06 | The NTC hot water thermistor is out of order. | |
08 | The unlock key is defective. | Inspect the key contacts with the board. Replace part. |
09 | The setting mode is activated. | Cancel the mode if it is not needed. |
10 | Circuit pressure has dropped to less than 0.9 bar. | How to fix the problem:
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Error 11 | The smoke pressure sensor has tripped. | Wall-mounted gas boiler can be blocked when there is insufficient traction. After that, restart is automatically enabled. After three shutdowns, a code is issued and the red indicator lights up. Check for traction. If not, clean the chimney shaft. Its arrangement should be carried out strictly according to the standards. |
15 | Incorrect configuration (relevant for Eolo Star / Mini models). | Contact the service center. |
16 | The fan does not turn on. The chain is broken. | Fan Diagnostics. Circuit repair, contact tightening, reconnection. |
20 | Flame problems. | The code indicates a stray flame. Make sure there is no gas leak. If the room smells, turn off the valves and call the gas service. The control module is being tested. |
27 | The coolant circulation is disturbed, as a result, the device overheats. | Verification:
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28 | Leak in the DHW circuit. Simultaneous increase in temperature in the heating system and hot water supply. | How to proceed:
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31 | The electronic board is not compatible with the boiler. | The model name may have been entered incorrectly. |
37 | Power surges. Fall to 197-175 V. | Connect a voltage regulator. |
Faults Immergas Eolo Mythos | ||
E00 | The work is stopped. There is no flame in the burner. | Inspect the flame electrode and control board, as well as their wiring. Install new items in the event of a malfunction. |
E02 | No ignition. |
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E04 | The boiler is permanently blocked. | Checking all components and parts. |
E12 | Thermostat signal for overheating. | Diagnostics:
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E18 | Flow temperature exceeded. |
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E19 | High degree of heating on the return line. | |
E28 / E29 | The fan or Hall sensor is out of order. | Make sure that it works:
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E31 / E36 | Short circuit (short circuit) or sensor break in the flow line. | Replacing the temperature sensor. |
E32 / E37 | Short circuit of the sensor or open circuit on the return. | |
E65 | Fan blows air poorly. | Replace the unit motor if reduced operation is observed (less than 900 rpm). |
Immergaz problems with automatic unlocking
As soon as you eliminate the cause of the malfunction, the board will automatically resume operation and heating.
What codes are found:
- b 18 - violation of the heating of the supply circuit (over 95 ° C). Eliminate the causes of poor coolant circulation (clogged filters, heat exchanger, pump blockage);
- b 19 - the heating level at the return exceeded the mark of 90 ° C. See solution for b 18;
- b 24 / b 30 - supply and return thermistors give different readings. The difference is 10 ° C. Heat exchanger diagnostics. Descaling;
- b 25 - a rapid increase in the degree of supply line. Feed the circuit with water;
- b 26 - pressure decreased. Measure readings, add coolant to the circuit, adjust the pump;
- b 28 / b 29 - the fan is not functioning. Replace the unit if it breaks;
- b 33 / b 38 - short circuit, open DHW thermistor. Connect a new part;
- b 65 - the fan does not start for a long time. Diagnostics and replacement.
Another common malfunction is a yellow, uneven flame. In this case, remove soot and dust from the burner. Also remove dirt from the chimney shaft - it breaks traction.
Not all models are equipped with a display. Some give out a code of breakdown by illumination of indicators. For example, Immergas Nike Star / Mini.
LED is on | Light flashes | Alternate diode illumination | Other |
Yellow - a message about the presence of a flame. | Yellow diode - standby mode is on. | All in turn - a small amount of liquid. | The lights do not light - the equipment is turned off. |
Red - no ignition. Unit shutdown. | All indicators - traction thermostat has tripped. | Lights up red, yellow blinks - circulation is disturbed. | |
Yellow - the NTC probe of the boiler or DHW has failed. | |||
Red - “Chimney sweep” mode is on. |
If you are unable to fix the breakdown yourself and the symbols reappear on the screen, it is better to call the wizard.