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by CDunn
Sun Nov 25, 2007 11:51 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating Boiler
Replies: 3
Views: 3346

The boiler is 6 years old. When the heating is running the radiator light switches off and the tap light comes on without turning a tap on. The radiator light will not come back on until the water control is turned to off. ie to get hot water, I have to turn water control on then off when finished, ...
by CDunn
Fri Nov 23, 2007 11:55 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Central Heating Boiler
Replies: 3
Views: 3346

Central Heating Boiler

I have a Potterton 28i boiler giving trouble. It keeps heating the hot water by turning the pump for the central heating off and it won't re-start. I have discovered by turning the hot water control to off, the central heating fires up again and works fine. Is this a sensor problem?
Colin.
by CDunn
Thu Oct 04, 2007 7:07 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Boiler Pressure Increase
Replies: 4
Views: 6775

Both of you are spot on. It seems the top up valve was not completely off. I drained more water out of system down to 1.5bar and adjusted the valve. It is now sitting at 1.8 and dropping to 1.5. Thanks to you both. Well done.
by CDunn
Wed Oct 03, 2007 1:14 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Boiler Pressure Increase
Replies: 4
Views: 6775

The boiler is only 5 years old. I'll check the water top up to make sure it is off. Thanks very much for all your help.
by CDunn
Mon Oct 01, 2007 12:03 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Boiler Pressure Increase
Replies: 4
Views: 6775

Boiler Pressure Increase

I have a Potterton Performa 28i boiler with a top up valve fitted below it. The boiler constantly increases in pressure to about 3.5bar. I have bled all radiators and even bled the main outdoor valve. There appears to be no air in the system and the top up valve is switched off. HELP!
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