| Code | Description | Symptom | Possible cause | Remedy | Model Specific |
|---|---|---|---|---|---|
| #*_ _ | COMMUNICATION FAILURE. | No control on faulty unit | Bad data cable connection Damaged cable | Check data cable(s) and plugs Repair/replace damaged cable | SmartElec2 |
| # E1 | AIR SENSOR TEMPERATURE TOO HIGH AIR SENSOR FAILURE. | Fan operating, no heat | -High ambient air temperature -Impeller turning in wrong direction -Motor failure -Air sensor cable disconnected - Air sensor broken | Check ventilation Check rotation of impeller Check motor & replace if necessary Check cable Replace air sensor | SmartElec2 |
| # E3 | HEATSINK TOO HOT | Fan operating, no heat | High ambient air/faulty base unit | Replace SmartElec base unit | SmartElec2 |
| # E4 | HEATSINK SENSOR FAILURE | Fan operating,no head | Heatsink sensor wiring disconnected/faulty | Check wiring | SmartElec2 |
| # E5 | EXTERNAL TEMPERATURE | Unit runs, but no external temperature control | External temperature sensor faulty | Replace sensor | SmartElec2 |
| # E6 | OVERHEAT THERMOSTAT OPEN CIRCUIT | Fan operating, no heat | Overheat thermostat open circuit | Reset/replace overheat thermostat | SmartElec2 |
Ambirad 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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