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- 19 Feb 2005
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Have got a Megaflow system.
All of a sudden the switches on the Drayton zone valve actuator are whirring, clicking and thumping. This is whilst the central hesting is on.
Anyone any ideas
All of a sudden the switches on the Drayton zone valve actuator are whirring, clicking and thumping. This is whilst the central hesting is on.
Anyone any ideas