L A
 |
Boiler has incurred an overheat situation If fault has occurred within the last 15 minutes, allow boiler to cool down, then press reset button If boiler lights and continues to run for a period of over 5 min's, boiler ok. Possible reasons for fault code Pump stuck, no flow or airlock - Call installer |
   |
Low or no system pressure - refill system Air in system - Bleed air from radiators All radiators have thermostatic valves (TRV'S) System fitted with thermostatic radiator valves (TRV's) apart from radiator. Check lock shield valves (isolation valve) on this radiator have not been turned off. |