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WHY ARE MY RADIATORS GETTING HOT WHEN I AM ONLY SWITCHING THE HOT WATER ONC?

WHY ARE MY RADIATORS GETTING HOT WHEN I AM ONLY SWITCHING THE HOT WATER ON AND NOT THE CENTRAL HEATING?
MARK, July 2005
its sounds like your car needs a check

james, August 2005
Try checking your 2 or 3 way diverter valve, which controls where the hot water goes, ie to heat up water in DHW tank or to your rads.

Daz, July 2005
It sounds loke your divertor valve has failed or seized.

1 interceptor, July 2005