Short answer
On a Remeha Gas 210 Eco Pro, E:14 means 5 failed burner starts — caused by no ignition spark, a spark but no flame (gas cock, inlet pressure, air in the gas line, gas valve setting, blocked flue or air supply), or a flame with too little ionisation. Other key codes are E:12 trap protection, E:15 failed gas leakage (valve proving) checks, E:16 false flame and E:36 five flame losses.
Resetting
Remeha's manual says to note the code and hold RESET for 2 seconds. If the display shows SERVICE instead of RESET, switch the boiler off and on again after 10 seconds before the fault can be reset. The control stores the last 16 faults and 16 control stops.
Before you reset
A single reset after a power cut or a known one-off event is reasonable. Repeated resets are not: many commercial controls count resets and lock out further (for example a 'too many resets' code), and resetting a flame or gas valve fault over and over can mask a dangerous condition. If a lockout returns, isolate the appliance and call a Gas Safe registered engineer with the relevant commercial competence.
Remeha Gas 210 Eco Pro fault codes
| Code | Meaning | What to check |
|---|---|---|
| E:00 | Storage unit parameter not found | Check the cable bundle |
| E:01 | Safety parameters not in order | Check the cable bundle |
| E:02 | Heat exchanger temperature sensor short circuited | Check cabling, sensor and sensor mounting |
| E:03 | Heat exchanger temperature sensor open circuit | Check cabling, sensor and sensor mounting |
| E:04 | Heat exchanger temperature below normal range | Check flow (direction, pump, valves), bleeding, sensors |
| E:05 | Heat exchanger temperature above normal range (high limit thermostat) | Check flow, water pressure, sensors, dirty heat exchanger |
| E:06 | Return temperature sensor short circuited | Check cabling, sensor and sensor mounting |
| E:07 | Return temperature sensor open circuit | Check cabling, sensor and sensor mounting |
| E:08 | Return temperature below normal range | Check flow, bleeding, sensors |
| E:09 | Return temperature above normal range | Check flow, water pressure, dirty heat exchanger |
| E:10 / E:11 | Too great a difference between heat exchanger and return temperature | Check flow, bleeding, water pressure, sensors, heat exchanger |
| E:12 | Trap protection activated | Check trap is filled and clear, flue/air supply blockage, cascade valve, dirty heat exchanger |
| E:14 | 5 failed burner starts | No spark: ignition cable, 3–4 mm electrode gap, earthing. Spark but no flame: gas cock, inlet pressure, purged supply, gas valve setting, flue/air. Weak ionisation: electrode, earthing, gas pressure |
| E:15 | 5 failed gas leakage controls | Gas cock, gas pressure, VPS switch settings and wiring (V1/V2), gas valve leaking or stuck open |
| E:16 | False flame signal | High CO₂ causing glowing burner, ignition/ionisation electrode, ignition transformer, gas valve leaking or stuck open |
| E:17 | Gas valve control fault | Check the cable bundle; replace the gas valve if necessary |
| E:32 | Flow temperature sensor short circuited | Check cabling, sensor and sensor mounting |
| E:33 | Flow temperature sensor open circuit | Check cabling, sensor and sensor mounting |
| E:34 | Fan fault | Fan cabling, defective fan, excessive draught turning the fan |
| E:35 | Flow and return swapped | Check flow direction and sensors |
| E:36 | Flame loss occurs 5 times | Inlet gas pressure and controller, gas block setting, air/flue blockage, flue gas recirculation, heat exchanger leaks |
| E:37 | Communication fault with SU board | Check SU board is correctly seated in the PCU-01 connector |
| E:38 | Communication fault with SCU board (optional) | Check the cable bundle |
| E:39 | Shutdown input in locked-out mode | Remove external cause, check parameter and cabling |
Source: Remeha Gas 210 Eco Pro installation and service manual (114494). Codes and meanings can differ between versions and control software — always check the manual for your exact appliance.
Figures are typical for UK natural gas. The current edition of the relevant IGEM standard and the manufacturer's instructions always take precedence on site.
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