| Fault Code | Repair | Description | Possible Cause | Check / Solution | Models |
|---|---|---|---|---|---|
| E0 | Link | Flow 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 |
| E1 | Link | Flow temperature is higher than the set maximum tem- perature | Insufficient 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 |
| E2 | Link | Return temperature is higher than the flow temperature | Insufficient 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 |
| E3 | Link | Control unit or earth fault | Mains 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 |
| E4 | Link | More 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 |
| E5 | Link | No ionisation or ionisation failure more than 5 times during one heat demand. | CO2 wrongly adjusted | Check: ‰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 |
| E6 | Link | Unwanted flame formation | Faulty control unit, replace control unit. | Avanta | |
| E7 | Link | No water in the boiler or the pump is not working | Insufficient 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 |
| E8 | Link | Fan fault | Fan 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 |
| E10 | Link | No through flow during venting cycle | Insufficient 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 |
| E11 | Link | Air box tempera- ture to high | Air leakage from heat exchang- er to air box | Check: ‰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 |
| E13 | Link | Heat-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 |
| E43 | Link | Parameter limits | Automation settings | Replace d f / d U settings, see Par. 2.9.10 If this error code still returns after resetting; please contact Broag. | Avanta |
| E44 | Link | Parameter check | Automation settings | Replace d f / d U settings, see Par. 2.9.10 If this error code still returns after resetting; please contact Broag. | Avanta |
| E45 | Link | Default parameters | Automation settings | Replace boiler control unit. | Avanta |
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.
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