Hot Water but no Central Heating


Postby yff69 » Mon Nov 10, 2008 8:50 pm

Apologies if this has already been posted but cannot find any the same.
I am having a problem with my central heating. Firstly I thought it was the boiler but it fires up when the timer is set for the hot water tank on a morning. When I switch the CH on on the control box nothing happens. The pump works fine when the HW is running so its not the pump. The thermostat is on as if to start the CH. This is a system with a header tank. The 3 way valve doesn't operate when i turn on the CH. Could it be a stuck valve or broken motor? Can I manually override this valve? If you would like more information please ask. Any help would be greatly appreciated.

Thank You,
Joel
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Postby nitro23456 » Tue Nov 11, 2008 11:33 am

sounds like the actuator of the 3 port valve. replace it.
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Postby htg engineer » Tue Nov 11, 2008 4:41 pm

Sounds like the actuator/motorised valve is the problem, is there an arm on the side of tha actuator ? if there is you should be able to put it into manual position.


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