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Unstable Hot water

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Post  ERN Fri Jul 09, 2010 7:38 am

The hot water delivered to the taps varies condsiderably sometime cold sometimes exremelt hot. The storage water is o.k. After various tests I have decided to try replacing both sensors although the red light flashes normal. The sensors in my unit do not have a brass or theaded parts . What part numbers do I require (are they identical)?

Thanks in advance

ERN

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Join date : 2010-07-09

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Post  Mike the Boilerman Fri Jul 09, 2010 2:14 pm

Hi ERN,

Yes the dry pocket sensors are identical, part number GT146.

Cheers, Mike

_________________
Mike Bryant AKA Mike the Boilerman, Gledhill repair specialist, webmaster of www.gledhill-repairs.co.uk & www.miketheboilerman.com. For information about my Gledhill repair service or to make a booking call me on 07866 766364. (Please don't phone me for advice if you are fixing a Gledhill yourself, ask on here instead - I run this forum partly to cut down on the phone calls!)

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Post  ERN Fri Jul 09, 2010 4:46 pm

Mike the Boilerman wrote:Hi ERN,

Yes the dry pocket sensors are identical, part number GT146.

Cheers, Mike
Thanks again

ERN

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Post  ERN Tue Aug 03, 2010 1:28 am

Hello Mike,

I did not mention that the pulsacoil is at my sons home therefore I cannot monitor things as I would like.

Anyhow I fitted the sensors & things seemed o.k although water seemed a little on the hot side.

My son now says he sometimes needs to run the water for 10 minutes before the pump kicks in & he get hot water. The old sensors were held in with what I presume to be a heat sink compound how important is this.

Thank

ERN

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Post  Mike the Boilerman Tue Aug 10, 2010 3:22 pm

Verrrry important!

Buy some from Maplin and use it on the top sensor. The lower sensor (PHE return) does not need it. If there is still a ten minute delay then I'd be considering changing the pump. Test for AC voltage supplying the pump whilst waiting for HW. If present then a new pump is indicated.

I take it you've checked the header tank is full first though?

Cheers, Mike

_________________
Mike Bryant AKA Mike the Boilerman, Gledhill repair specialist, webmaster of www.gledhill-repairs.co.uk & www.miketheboilerman.com. For information about my Gledhill repair service or to make a booking call me on 07866 766364. (Please don't phone me for advice if you are fixing a Gledhill yourself, ask on here instead - I run this forum partly to cut down on the phone calls!)

Mike the Boilerman
Admin

Posts : 446
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https://gledhill-repairs.forumotion.net

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