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central heating only works when hot water on

Postby miranda » Fri Oct 26, 2007 8:27 am

Hi guys, Since the cold weather has start to come, I have turned my heating on and the radiators only get hot when the hot water is warming up. Once the water reaches temperature the radiators go cold.
I have bled the radiators and nothing changes. The problem is I dont use enough hot water to keep the radiators on.
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Simply Build It

Postby marrtin » Fri Oct 26, 2007 7:46 pm

Does the pump continue to run after the hot water goes off? Could be a faulty zone valve. Try operating it manually.
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