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central heating

Why is my central heating permanently on even when set to 'off' or 'timer?!!.The only way to switch it off is to set the boiler to 'reset'. shamon (Wed 16:32 21/Dec/05)

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Answers 1 to 3 of 3

stanleyman		(Wed 18:50 21/Dec/05) Need more info, type of boiler, system, what reset etc.
les saisies		(Thu 20:56 22/Dec/05) Have you got a frost-stat in the loft? If you have it may be set wrong and is bringing on the system at too high a temperature. The idea is to switch on the system, overriding the room stat, to prevent the pipes in the loft freezing up at times when the heating is otherwise shut down.
KARL		(Fri 14:36 23/Dec/05) A stuck zone valve actuator is a possible reason - hasn't returned to the off position (usually a mechanical process) and therefore the boiler circuit is still energised. Try finding a manual override lever on the zone valve and move it to the "off" or "closed" position.

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