Ngenic
Ngenic Smart Thermostats Error Codes
Complete list of fault codes and troubleshooting guides. Use the search below to find your specific error.
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E01
Thermostat display shows E01 and cannot connect to the Ngenic cloud service; remote control via app is unavailable.
Cloud Connectivity Failure
E02
Thermostat shows E02 and cannot join the home Wi‑Fi network; setup fails or drops during connection.
Wi‑Fi Association Failure
E03
Display shows E03 and the thermostat reports no temperature reading; room temperature shows as ‘--’ or 0°C.
Internal Room Temperature Sensor Failure
E04
Thermostat shows E04 and cannot detect the remote room sensor or wireless temperature puck paired with the Ngenic system.
Remote Sensor Communication Loss
E05
Thermostat displays E05 and heating does not start; the control module reports no boiler flame signal or fails to energize the boiler relay.
Boiler Relay / Call-for-Heat Failure
E06
Thermostat shows E06 and reports that the control module is offline; heating cannot be controlled even though Wi‑Fi works.
Thermostat-to-Control-Module Link Failure
E07
Thermostat shows E07 and the app reports ‘Outdoor sensor error’; weather-compensated control is disabled.
Outdoor Temperature Sensor Fault
E08
Thermostat displays E08 and shows an abnormally high or low flow temperature from the boiler or heat pump.
Flow Temperature Sensor Error
E09
Thermostat shows E09 and reports ‘Power supply error’; the display may flicker or reboot intermittently.
Thermostat Power Supply Instability
E10
Thermostat displays E10 and the app indicates ‘Firmware update failed’; device may be stuck on an old version.
Firmware Update Error
E11
Thermostat shows E11 and the app reports ‘Valve actuator error’ on one or more Ngenic smart radiator valves.
Radiator Valve Actuator Fault
E12
Thermostat displays E12 and the app indicates ‘Battery low’ for the thermostat or wireless sensor.
Low Battery Condition
E13
Thermostat shows E13 and the app reports ‘Time sync error’; schedules may run at incorrect times.
Time Synchronization Failure
E14
Thermostat displays E14 and the app shows ‘Over-temperature protection active’; heating is shut down.
Over-Temperature Safety Trip
E15
Thermostat shows E15 and the app indicates ‘Communication bus error’ between Ngenic control module and expansion modules (e.g., zone controllers).
Wired Bus Communication Fault
E16
Thermostat displays E16 and the app reports ‘Humidity sensor error’; humidity readings are missing or unrealistic.
Internal Humidity Sensor Failure
E17
Thermostat shows E17 and the app indicates ‘Geofencing/location error’; presence-based control is disabled.
Location Services / Geofencing Fault
E18
Thermostat displays E18 and the app reports ‘Heat pump integration error’; external heat pump data is unavailable.
Heat Pump Integration Communication Failure
E19
Thermostat shows E19 and the app indicates ‘Zigbee/Z-Wave device error’ for a connected Ngenic-compatible accessory.
Third-Party Wireless Accessory Communication Fault
E20
Thermostat displays E20 and the app reports ‘Internal memory error’; settings may not be saved.
Non-Volatile Memory Fault
Symptom
Condensation or visible moisture appears inside the thermostat or on the control module.
Moisture Ingress
Symptom
Heating does not turn on even though the thermostat shows a heating demand and target temperature above room temperature.
No Heat Output Despite Call-for-Heat
Symptom
Heating stays on continuously even when the thermostat is set low or turned off.
Stuck Heating Relay / Call-for-Heat Latched On
Symptom
Ngenic app cannot find or control the thermostat when away from home, but works when on the same Wi‑Fi network.
Remote Access / NAT Traversal Issue
Symptom
Ngenic app schedules do not match what the thermostat is doing; changes made in the app are not reflected on the device.
Cloud-to-Device Sync Failure
Symptom
Ngenic smart radiator valves make loud clicking or grinding noises during operation.
Noisy Radiator Valve Actuator
Symptom
Ngenic thermostat fails to detect or control one specific zone or room equipped with Ngenic smart radiator valves.
Single-Zone Control Failure
Symptom
Room temperature never reaches the setpoint; heating cycles briefly and then stops, leaving the home underheated.
Underheating / Short Cycling
Symptom
Room temperature overshoots the setpoint by several degrees before the heating turns off.
Poor Temperature Control / Overshoot
Symptom
Thermostat backlight or display flickers or shows lines, but the device otherwise functions.
Display / Backlight Degradation
Symptom
Thermostat display is on but unresponsive or very slow; touch or buttons lag significantly.
User Interface / Processor Overload
Symptom
Thermostat frequently disconnects from Wi‑Fi; the app shows it offline several times per day.
Intermittent Wi‑Fi Connectivity
Symptom
Thermostat frequently reboots on its own without user interaction.
Unexpected Reboots / Watchdog Resets
Symptom
Thermostat is completely dead: no display, no LEDs, and no response to button presses.
No Power to Thermostat
Symptom
Thermostat or control module emits a buzzing or humming noise, especially when heating is active.
Electrical Buzz / Coil Noise
Symptom
Thermostat or control module feels unusually hot to the touch during normal operation.
Overheating Electronics
| Error Code | Symptom | Fault Type | Guide |
|---|---|---|---|
| E01 |
Thermostat display shows E01 and cannot connect to the Ngenic cloud service; remote control via app is unavailable.
|
Cloud Connectivity Failure | View Details |
| E02 |
Thermostat shows E02 and cannot join the home Wi‑Fi network; setup fails or drops during connection.
|
Wi‑Fi Association Failure | View Details |
| E03 |
Display shows E03 and the thermostat reports no temperature reading; room temperature shows as ‘--’ or 0°C.
|
Internal Room Temperature Sensor Failure | View Details |
| E04 |
Thermostat shows E04 and cannot detect the remote room sensor or wireless temperature puck paired with the Ngenic system.
|
Remote Sensor Communication Loss | View Details |
| E05 |
Thermostat displays E05 and heating does not start; the control module reports no boiler flame signal or fails to energize the boiler relay.
|
Boiler Relay / Call-for-Heat Failure | View Details |
| E06 |
Thermostat shows E06 and reports that the control module is offline; heating cannot be controlled even though Wi‑Fi works.
|
Thermostat-to-Control-Module Link Failure | View Details |
| E07 |
Thermostat shows E07 and the app reports ‘Outdoor sensor error’; weather-compensated control is disabled.
|
Outdoor Temperature Sensor Fault | View Details |
| E08 |
Thermostat displays E08 and shows an abnormally high or low flow temperature from the boiler or heat pump.
|
Flow Temperature Sensor Error | View Details |
| E09 |
Thermostat shows E09 and reports ‘Power supply error’; the display may flicker or reboot intermittently.
|
Thermostat Power Supply Instability | View Details |
| E10 |
Thermostat displays E10 and the app indicates ‘Firmware update failed’; device may be stuck on an old version.
|
Firmware Update Error | View Details |
| E11 |
Thermostat shows E11 and the app reports ‘Valve actuator error’ on one or more Ngenic smart radiator valves.
|
Radiator Valve Actuator Fault | View Details |
| E12 |
Thermostat displays E12 and the app indicates ‘Battery low’ for the thermostat or wireless sensor.
|
Low Battery Condition | View Details |
| E13 |
Thermostat shows E13 and the app reports ‘Time sync error’; schedules may run at incorrect times.
|
Time Synchronization Failure | View Details |
| E14 |
Thermostat displays E14 and the app shows ‘Over-temperature protection active’; heating is shut down.
|
Over-Temperature Safety Trip | View Details |
| E15 |
Thermostat shows E15 and the app indicates ‘Communication bus error’ between Ngenic control module and expansion modules (e.g., zone controllers).
|
Wired Bus Communication Fault | View Details |
| E16 |
Thermostat displays E16 and the app reports ‘Humidity sensor error’; humidity readings are missing or unrealistic.
|
Internal Humidity Sensor Failure | View Details |
| E17 |
Thermostat shows E17 and the app indicates ‘Geofencing/location error’; presence-based control is disabled.
|
Location Services / Geofencing Fault | View Details |
| E18 |
Thermostat displays E18 and the app reports ‘Heat pump integration error’; external heat pump data is unavailable.
|
Heat Pump Integration Communication Failure | View Details |
| E19 |
Thermostat shows E19 and the app indicates ‘Zigbee/Z-Wave device error’ for a connected Ngenic-compatible accessory.
|
Third-Party Wireless Accessory Communication Fault | View Details |
| E20 |
Thermostat displays E20 and the app reports ‘Internal memory error’; settings may not be saved.
|
Non-Volatile Memory Fault | View Details |
| – |
Condensation or visible moisture appears inside the thermostat or on the control module.
|
Moisture Ingress | View Details |
| – |
Heating does not turn on even though the thermostat shows a heating demand and target temperature above room temperature.
|
No Heat Output Despite Call-for-Heat | View Details |
| – |
Heating stays on continuously even when the thermostat is set low or turned off.
|
Stuck Heating Relay / Call-for-Heat Latched On | View Details |
| – |
Ngenic app cannot find or control the thermostat when away from home, but works when on the same Wi‑Fi network.
|
Remote Access / NAT Traversal Issue | View Details |
| – |
Ngenic app schedules do not match what the thermostat is doing; changes made in the app are not reflected on the device.
|
Cloud-to-Device Sync Failure | View Details |
| – |
Ngenic smart radiator valves make loud clicking or grinding noises during operation.
|
Noisy Radiator Valve Actuator | View Details |
| – |
Ngenic thermostat fails to detect or control one specific zone or room equipped with Ngenic smart radiator valves.
|
Single-Zone Control Failure | View Details |
| – |
Room temperature never reaches the setpoint; heating cycles briefly and then stops, leaving the home underheated.
|
Underheating / Short Cycling | View Details |
| – |
Room temperature overshoots the setpoint by several degrees before the heating turns off.
|
Poor Temperature Control / Overshoot | View Details |
| – |
Thermostat backlight or display flickers or shows lines, but the device otherwise functions.
|
Display / Backlight Degradation | View Details |
| – |
Thermostat display is on but unresponsive or very slow; touch or buttons lag significantly.
|
User Interface / Processor Overload | View Details |
| – |
Thermostat frequently disconnects from Wi‑Fi; the app shows it offline several times per day.
|
Intermittent Wi‑Fi Connectivity | View Details |
| – |
Thermostat frequently reboots on its own without user interaction.
|
Unexpected Reboots / Watchdog Resets | View Details |
| – |
Thermostat is completely dead: no display, no LEDs, and no response to button presses.
|
No Power to Thermostat | View Details |
| – |
Thermostat or control module emits a buzzing or humming noise, especially when heating is active.
|
Electrical Buzz / Coil Noise | View Details |
| – |
Thermostat or control module feels unusually hot to the touch during normal operation.
|
Overheating Electronics | View Details |
No matching codes found
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