Hi
I have a Vaillant combi boiler which has just started showing a fault. I'm not sure what the exact model number is but the details on the wiring plan are VCW GB 221, 240, 280 H. The symptoms of the fault are:-
1. The boiler won't fire up when the central heating is switched on
2. The central heating pump appears to be running continuously.
3. When I turn on the hot water tap the boiler fires up OK but I have noticed the water seems to heat up extremely quickly.
I switched off the boiler last night and when I turned it on this morning the central heating switch fired up the boiler ok. I then turned off the central heating and tried the hot water. The water heated up extremely quickly and the pump started running continuously. When I tried the central heating switch again the boiler did not fire up.
This is my first post. I hope someone can give me some pointers as to the cause of the problem.
AMR[/list]
I have a Vaillant combi boiler which has just started showing a fault. I'm not sure what the exact model number is but the details on the wiring plan are VCW GB 221, 240, 280 H. The symptoms of the fault are:-
1. The boiler won't fire up when the central heating is switched on
2. The central heating pump appears to be running continuously.
3. When I turn on the hot water tap the boiler fires up OK but I have noticed the water seems to heat up extremely quickly.
I switched off the boiler last night and when I turned it on this morning the central heating switch fired up the boiler ok. I then turned off the central heating and tried the hot water. The water heated up extremely quickly and the pump started running continuously. When I tried the central heating switch again the boiler did not fire up.
This is my first post. I hope someone can give me some pointers as to the cause of the problem.
AMR[/list]