| Fault Code |
Possible Cause |
Meaning |
| F.00 |
NTC Faults |
This means that your Flow NTC (Negative Temperature Coefficient Thermistor) cable is either defective or broken and needs to be replaced |
| F.01 |
The Flow NTC (Negative Temperature Coefficient Thermistor) cable is either defective or broken and needs to be replaced |
| F.10 |
— |
| F.11 |
|
| F.13 |
— |
| F.20 |
Boiler has exceeded the maximum temperature and needs to cool down |
| F.22 |
Dry fire / Low water in system / Overheat |
This means that there’s either no water in your system, you have a defective pump or the pump lead is defective |
| F.24 |
Low water / Pump Failure / Blockage |
Pump could be obstructed, running at low capacity, could be air trapped or the pressure might be too low. |
| F.28 |
Either insufficient gas in the system, a defective electrode, ignition lead or electronic ignitor |
| F.29 |
Flame extinguished |
Flame or pilot light has gone out – check flue duct or gas supply. |
| F.60 |
Gas valve control defective |
Cable loom (connects gas valve) might have short circuited, gas valve assembly defective or electronic control system issue. |
| F.61 |
Gas valve control defective |
Cable loom (connects gas valve) might have short circuited, gas valve assembly defective or electronic control system issue. |
| F.62 |
Defective gas valve closure mechanism |
Boiler has exceeded the maximum temperature and needs to cool down |
| F.63 |
EEPROM (Electrically Erasable Programmable Read-Only Memory) error |
Electronic fault. |
| F.64 |
Electronic system or sensor fault |
Flow or back flow NTC has short circuited, or an electronic fault |
| F.65 |
Electronic system temperature too high |
This can happen because of an external heat source or an electrical fault |
| F.67 |
Electronic fault in the flame system |
— |
