Remeha Fault Codes

Welcome to the fault-codes section of this site. The following table or page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. You may be guided through the fault finding sequence or steps, for rectifying your boiler with this fault code. Suggested repair solutions may be provided by a link to a repair page. NB Some fault codes are only applicable to a specific range of boilers only.

Fault CodeRepairDescriptionPossible CauseCheck / SolutionModels
E0LinkFlow or return sen- sor fault.Short circuit in the flow, return or boiler temperature sensor.

Defective or not (properly) con- nected flow, return or boiler temperature sensor.
Short circuit in the flow, return or boiler temperature sensor.
Check the wiring and the connections of the sensors visually: are the plugs all correctly in position? With a multimeter: measure the resistance in the wir- ing and connection.

Check that the sensors are working; take the sensors out * and measure the resistance with a multimeter at room temperature (20 - 25å¡C); the sensor is working properly if the resistance is between 12 and 15 kë©.
Avanta
E1LinkFlow temperature is higher than the set maximum tem- peratureInsufficient water.

No through flow.

Too much air in the system.

Deviation in the flow or return temperature sensor.
Check the minimum water pressure, read off the gauge.

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; if that is in order the pump is faulty.

Vent the system.

Check that the sensors are working; take the sensors out * and measure the resistance with a multimeter at room temperature (20 - 25å¡C); the sensor is working properly if the resistance is between 12 and 15 kë©.
Avanta
E2LinkReturn temperature is higher than the flow temperatureInsufficient water.

No through flow.

Too much air in the system.

Sensors not wired correctly

Deviation in the flow or return temperature sensor.
Check the minimum water pressure, read off the gauge.

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

Vent the system.

Check the wiring between sensors and control unit.

Check that the sensors are working; take the sensors out * and measure the resistance with a multimeter at room temperature (20 - 25å¡C); the sensor is working properly if the resistance is between 12 and 15 kë©.
Avanta
E3LinkControl unit or earth faultMains supply not correctly earthed.

Control unit faulty.
Check that the power supply from the switch spur is properly earthed, if that is the case the control unit is faulty. Avanta
E4LinkMore than 5 start attempts without any flame forma- tion.No ignition spark.

A spark but no flame.

There is a flame but no, or insufficient ionisation (lower than 3 or higher than 9 ë_A)
Check:

the connection between the ignition wire and the ignition trafo;

the ignition wire and electrode for ÌÓdielectric breakdownÌ¥;

the inter-electrode distance, this should be 3-4 mm; that

the ignition electrode is properly earthed.

Check:
‰Û¢ the connection between the ignition wire and the ignition trafo;
‰Û¢ the ignition wire and electrode for ‰Û÷dielectric breakdown‰Ûª;
‰Û¢ the inter-electrode distance, this should be 3-4 mm; that
the ignition electrode is properly earthed.

Check that:
‰Û¢ the gas tap is open;
‰Û¢ the gas pre-pressure is sufficient;
‰Û¢ the gas pipe is de-aerated;
‰Û¢ the gas valve is energised during ignition and opens;
‰Û¢ the electrode is correctly fitted and clean;
‰Û¢ the CO2 adjustment at low and full load;
‰Û¢ there is no obstruction / fitting fault in the gas pipe;
‰Û¢ there is no obstruction in the air supply or flue (e.g. a
blocked siphon); there is no recirculation of flue gasses (either inside or outside the boiler).

Check:
‰Û¢ the flame, is the heart of the flame visible and the flame stable?
‰Û¢ the CO2 adjustment at low and full load;
‰Û¢ that the ignition electrode is correctly earthed;
‰Û¢ visual check of the ignition/ionisation electrode: look for white oxide film
(remove with sandpaper or a screwdriver); look at the shape (are the pins still the original shape and is the distance between the two ends of the pins between 3 and 4 mm).
Avanta
E5LinkNo ionisation or ionisation failure more than 5 times during one heat demand.CO2 wrongly adjustedCheck:
‰Û¢ CO2 adjustment on the gas block;
‰Û¢ ignition/ionisationpin;
‰Û¢ flue/air-supplyconnections;
‰Û¢ gas flow at full load;
‰Û¢ if there is no recirculation of flue gasses (either inside or outside the boiler).
Avanta
E6LinkUnwanted flame formationFaulty control unit, replace control unit. Avanta
E7LinkNo water in the boiler or the pump is not workingInsufficient water.

No through flow.

Too much air in the system.

Wrong pump wiring.
Check the minimum water pressure, read off the gauge and check for leaks.

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

Vent the system.

Check wiring from and to control unit.
Avanta
E8LinkFan faultFan is not working

Fan does not stop
Check:
‰Û¢ fanfunction;
‰Û¢ fan wiring and connection.

Check:
‰Û¢ fanfunction;
‰Û¢ fan wiring and connection;
‰Û¢ excess chimney draught.
Avanta
E10LinkNo through flow during venting cycleInsufficient water.

No through flow

Too much air in the system.

Wrong pump wiring.
Check the minimum water pressure, read off the gauge and check for leaks.

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.

Vent the system.

Check wiring from and to control unit.
Avanta
E11LinkAir box tempera- ture to highAir leakage from heat exchang- er to air boxCheck:
‰Û¢ The sealing of the viewing glass;
‰Û¢ Whether front plate of heat exchanger is properly tightened
‰Û¢ Front plate sealing;
‰Û¢ Whether ignition electrode is properly fitted
Avanta
E13LinkHeat-exchanger fuse protection has responded; replace the heat exchanger after finding and solving the cause.Heat exchanger faulty.

Insufficient water.

No through flow.
Check wiring between heat exchanger fuse.

Check the minimum water pressure, read off the gauge and check for leaks.

Check that the pump is working; turn the spindle with a screwdriver, if that works but the pump still does not respond, check the wiring; that is in order the pump is faulty.
Avanta
E43LinkParameter limitsAutomation settingsReplace d f / d U settings, see Par. 2.9.10
If this error code still returns after resetting; please contact Broag.
Avanta
E44LinkParameter checkAutomation settingsReplace d f / d U settings, see Par. 2.9.10
If this error code still returns after resetting; please contact Broag.
Avanta
E45LinkDefault parametersAutomation settingsReplace boiler control unit.Avanta

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