Hi all
Boiler : Vaillant VCW GB 221 H
Boiler is fine with hot water, but when central heating is switched on it works ie. radiators get warm for about 5-10 minutes, and then goes off. The boiler will do the same if tried again after 20-30 minutes.
Has been working fine for the past 5 years.
Any advice would be greatly appreciated.
Thanks in advance.
Boiler : Vaillant VCW GB 221 H
Boiler is fine with hot water, but when central heating is switched on it works ie. radiators get warm for about 5-10 minutes, and then goes off. The boiler will do the same if tried again after 20-30 minutes.
Has been working fine for the past 5 years.
Any advice would be greatly appreciated.
Thanks in advance.