Measurement:
PLEASE SELECT ERROR CODE FROM LIST BELOW:
| CODE / | DESCRIPTION | CODE / | DESCRIPTION |
| F 0 | BCC ACTIVATION FAULT | F d | NO WATER FLOW |
| F 2 | FLAME LOSS | L 1 | FLOW TEMPERATURE OVERHEAT |
| F 3 | FAN FAULT | L 2 | IGNITION LOCKOUT |
| F 4 | FLOW THERMISTOR | L 3 | FAN FAULT |
| F 5 | RETURN THERMISTOR | L 5 | 5 BOILER RESETS IN 15 MINUTES |
| F 6 | OUTDOOR SENSOR | L 6 | FALSE FLAME LOCKOUT |
| F 7 | LOW MAINS VOLTAGE | c 0 | 5 BOILER RESETS |
| F 9 | PCB FAULT | c 2 | BCC FAULT |
| F A | RETURN TEMP HIGHER THAN FLOW |
