Non-motoring > Hot water pump CH Miscellaneous
Thread Author: sooty123 Replies: 48
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New Fri 18 Nov 22 16:28 
 Hot water pump CH - tyrednemotional
...just had a quick look at a 2 x 2 port S-plan wiring, and certainly if the CH diverter is stuck in the wrong position, then the pump switching won't work (and the boiler won't fire).

The suspect seems to be the valve that is buzzing (conventionally they seem to be "motor open" which means if the motor fails, the appropriate circuit will be closed and switching will be "off").

This seems a decent description and saves me typing:

www.heatsy.co.uk/blog/zone-valve-aka-2-port-valve/
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 Hot water pump CH new sooty123 18 Nov 22 14:34
 Hot water pump CH new Terry 18 Nov 22 14:48
 Hot water pump CH new sooty123 18 Nov 22 14:49
 Hot water pump CH new tyrednemotional 18 Nov 22 15:07
 Hot water pump CH new sooty123 18 Nov 22 15:45
 Hot water pump CH new Bromptonaut 18 Nov 22 15:51
 Hot water pump CH new sooty123 18 Nov 22 16:09
 Hot water pump CH new tyrednemotional 18 Nov 22 15:56
 Hot water pump CH new Bromptonaut 18 Nov 22 16:05
 Hot water pump CH new sooty123 18 Nov 22 16:08
 Hot water pump CH new sooty123 18 Nov 22 16:10
 Hot water pump CH new tyrednemotional 18 Nov 22 16:17
 Hot water pump CH new tyrednemotional 18 Nov 22 16:14
 Hot water pump CH new sooty123 18 Nov 22 16:17
 Hot water pump CH new tyrednemotional 18 Nov 22 16:19
 Hot water pump CH new sooty123 18 Nov 22 16:21
 Hot water pump CH new tyrednemotional 18 Nov 22 16:28
 Hot water pump CH new sooty123 18 Nov 22 16:44
 Hot water pump CH new Zero 18 Nov 22 16:47
 Hot water pump CH new sooty123 18 Nov 22 16:55
 Hot water pump CH new Zero 18 Nov 22 17:05
 Hot water pump CH new smokie 18 Nov 22 16:49
 Hot water pump CH new Zero 18 Nov 22 16:50
 Hot water pump CH new smokie 18 Nov 22 17:03
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 Hot water pump CH new bathtub tom 18 Nov 22 22:26
 Hot water pump CH new zippy 18 Nov 22 22:49
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 Hot water pump CH new sooty123 19 Nov 22 09:46
 Hot water pump CH new sooty123 19 Nov 22 09:52
 Hot water pump CH new smokie 19 Nov 22 10:08
 Hot water pump CH new Kevin 18 Nov 22 16:29
 Hot water pump CH new Zero 18 Nov 22 16:40
 Hot water pump CH new sooty123 18 Nov 22 16:46
 Hot water pump CH new tyrednemotional 18 Nov 22 17:28
 Hot water pump CH new Kevin 18 Nov 22 18:58
 Hot water pump CH new sooty123 18 Nov 22 19:15
 Hot water pump CH new Terry 18 Nov 22 16:50
 Hot water pump CH new Fullchat 18 Nov 22 17:29
 Hot water pump CH new Falkirk Bairn 18 Nov 22 17:46
 Hot water pump CH new sooty123 18 Nov 22 19:15
 Hot water pump CH new Fursty Ferret 20 Nov 22 10:17
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 Hot water pump CH new RichardW 20 Nov 22 21:07
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 Hot water pump CH new bathtub tom 20 Nov 22 22:33
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