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Remeha Boiler Error Codes
Every Remeha Boiler code in the database, with its meaning. Open a code for its causes, the checks to run in order, and how to clear it.
| Code | Meaning | Fix level |
|---|---|---|
E.00.04also: E00.04 | Return temperature sensor is disconnected or reads below its range (sensor open) | Call a professional |
E.00.05also: E00.05 | Return temperature sensor is short-circuited or reads above its range | Call a professional |
E.00.06also: E00.06 | The return temperature sensor is expected but not detected (no connection) | Call a professional |
E.00.07also: E00.07 | The difference between the return temperature and the flow temperature is too large | DIY checks first |
E.00.16also: E00.16 | Hot water tank sensor (domestic hot water) is disconnected or reads below its range | Call a professional |
E.00.17also: E00.17 | Hot water tank sensor (domestic hot water) is short-circuited or reads above its range | Call a professional |
E.01.04also: E01.04 | Flame failure five times: the flame has dropped out repeatedly | DIY checks first |
E.01.11also: E01.11 | The fan speed is outside its normal operating range | Call a professional |
E.01.12also: E01.12 | The return temperature is higher than the flow temperature (flow and return swapped) | Call a professional |
E.02.13also: E02.13 | The blocking input of the control is active (locking) | Call a professional |
E.02.15also: E02.15 | Time-out of the external CSU (no answer from the settings memory) | Call a professional |
E.02.17also: E02.17 | Communication error with the safety core in the gas valve control (feedback time exceeded) | Call a professional |
E.02.32also: E02.32 | Automatic topping up of the system takes too long (feedback time exceeded) | DIY checks first |
E.02.35also: E02.35 | A critical safety device has been disconnected (communication fault) | Call a professional |
E.02.39also: E02.39 | Insufficient pressure rise after automatic topping up | DIY checks first |
E.02.47also: E02.47 | The connection to the function groups has failed (function group not found) | Call a professional |
E.04.01also: E04.01 | Flow temperature sensor is short-circuited or reads above its range | Call a professional |
E.04.02also: E04.02 | Flow temperature sensor is disconnected or reads below its range (sensor open) | Call a professional |
E.04.03also: E04.03 | The measured temperature is above the safety limit | DIY checks first |
E.04.04also: E04.04 | Flue gas temperature sensor is short-circuited or reads above its range | Call a professional |
E.04.05also: E04.05 | Flue gas temperature sensor is disconnected or reads below its range (sensor open) | Call a professional |
E.04.07also: E04.07 | Deviation between flow sensor 1 and flow sensor 2 | Call a professional |
E.04.08also: E04.08 | The safety input is open (air pressure differential switch operated) | DIY checks first |
E.04.09also: E04.09 | Deviation between flue gas sensor 1 and flue gas sensor 2 | Call a professional |
E.04.10also: E04.10 | Five failed burner starts detected | DIY checks first |
E.04.11also: E04.11 | The gas valve check (VPS) has failed: the valve leak test does not pass | Call a professional |
E.04.12also: E04.12 | False flame detected before the burner starts | Call a professional |
E.04.13also: E04.13 | The fan speed is outside its normal operating range | Call a professional |
E.04.15also: E04.15 | The flue pipe is blocked | DIY checks first |
E.04.17also: E04.17 | The drive of the gas valve is faulty (gas valve fault) | Call a professional |
E.04.23also: E04.23 | Internal locking of the gas valve control | Call a professional |
H.01.00also: H01.00 | Communication error with the safety core of the control | Call a professional |
H.01.05also: H01.05 | Maximum difference between flow and return temperature exceeded | DIY checks first |
H.01.08also: H01.08 | The heat exchanger temperature rises too quickly (maximum temperature gradient exceeded) | DIY checks first |
H.01.09also: H01.09 | Gas pressure too low (gas pressure switch operated) | DIY checks first |
H.01.14also: H01.14 | The flow temperature has exceeded the maximum operating value | DIY checks first |
H.01.21also: H01.21 | The flow temperature rises too quickly during hot water operation (maximum DHW temperature gradient exceeded) | DIY checks first |
H.02.02also: H02.02 | The boiler is waiting for the configuration number (configuration error) | Call a professional |
H.02.03also: H02.03 | Configuration error: the configuration number is unknown or incorrect | Call a professional |
H.02.04also: H02.04 | Parameter error: the factory settings are not in order | Call a professional |
H.02.05also: H02.05 | The settings memory (CSU) does not match the control type (CU) | Call a professional |
H.02.09also: H02.09 | Partial blocking: the blocking input is active (frost protection keeps working) | Call a professional |
H.02.10also: H02.10 | Full blocking: the blocking input is active (without frost protection) | Call a professional |
H.02.12also: H02.12 | The enable signal from the external control did not arrive in time (waiting time expired) | Call a professional |
H.02.70also: H02.70 | The test of the external heat recovery unit has failed | Call a professional |
H.03.01also: H03.01 | No valid data received from the control (communication error with the CU-GH) | Call a professional |
H.03.02also: H03.02 | The measured ionisation current is too low: flame failure during operation | DIY checks first |
H.03.05also: H03.05 | Internal blocking in the gas valve control (fault in the safety core) | Call a professional |
H.03.17also: H03.17 | The periodic safety check is being carried out | DIY checks first |
More appliance types are being added. Codes vary by model and region.