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Intermittant domestic hot water

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Intermittant domestic hot water Empty Intermittant domestic hot water

Post  Connected Wed Jan 06, 2010 4:15 am

Morning,

I'm getting intermittant domestic hot water supply. The HW store is hot and can be felt hot on store side of the mixer valve. However, the supply will sometimes be deliver to the tap or shower as tepid (as can be felt on supply side of mixer valve). Simply turning the supply tap off and back on will sometimes recover the hot water supply (hot either side of mixer valve).

Is this the mixer valve on its way out?

Many thanks in advance,
Dave

Connected

Posts : 9
Join date : 2009-01-16

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Intermittant domestic hot water Empty Faulty mixing valve

Post  Paul Technician Southampt Wed Jan 06, 2010 2:38 pm

Hi
See other posts and mikes list of common faults.
One additional thought. Isolate mains cold water remove mixing valve check to see the condition of the filters on either side of the mixer valve. clean filters and mating faces, replace seals if in poor condition, Refit valve.
Second, reduce mains cold water flow rate, this may improve temp if pressure/flow high or exchanger scaled. If not the mixer seized. Replace.
Good luck Paul.
Paul Technician Southampt
Paul Technician Southampt

Posts : 11
Join date : 2010-01-06
Age : 57

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Intermittant domestic hot water Empty Re: Intermittant domestic hot water

Post  Connected Wed Jan 06, 2010 3:19 pm

Thanks for the reply.

Its an intermittant fault and most of the time its okay. BG coming to replace under the homecare policy but wanted to check whether thie blender valve is likely to be the problem or a 'shot in the dark'.

Cheers,
Dave

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