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Download WarmFlow COMBI 70 Technical data
Transcript
12.0 Fault Finding 12.1 Central Heating Switch on power, set selectors for CH on and DHW off. Set all controls to call for heat. Does the burner fire? YES Do radiators get hot? YES Is lockout lamp on burner or panel lit? Does boiler cycle on its thermostat? NO Is high limit Press reset YES thermostat lamp button, replace if lit? necessary. NO Check wiring, replace boiler thermostat. NO Is there continuity across the boiler stat connections 17 and 18 on the PCB? YES Check relay and PCB, replace. NO Check all valves are open and pump is working, check pressure, check all air is vented. YES NO Refer to burner fault finding. NO Is there continuity across the connections 28 and 30 on the PCB? YES YES Check power from clock or switch, check wiring fuses and mains supply. Page 44 HEATING IS WORKING NORMALLY NO Check boiler thermostat, replace if necessary.
