Measurement:
Select appropriate error code:
| CODE / | FAULT DESCRIPTION | CODE / | FAULT DESCRIPTION |
| F.0 | FLOW SENSOR | F.42 | FAULTY CABLE LOOM |
| F.10 | FLOW SENSOR | F.43 | FAULTY CABLE LOOM |
| F.1 | RETURN SENSOR | F.60 | ELECTRONIC FAULT |
| F.11 | RETURN SENSOR | F.61 | ELECTRONIC FAULT |
| F.20 | OVERHEAT CUT OFF ACTIVATED | F.62 | FLAME DETECTED AFTER DEMAND |
| F.22 | DRY FIRE PROTECTION | F.63 | EMC FAULT |
| F.23 | TEMP DIFF TOO HIGH | F.64 | ELECTRONIC FAULT |
| F.24 | TEMP RISE TOO QUICK | F.65 | PCB TEMP TOO HIGH |
| F.27 | FLAME DETECTED BEFORE DEMAND | F.66 | DISPLAY FAULT |
| F.28 | IGNITION LOCKOUT | F.67 | ELECTRONIC FAULT |
| F.29 | FLAME EXTINGUISHED DURING DEMAND |
