Unstable, sometimes completely cold temperature

Go down

Unstable, sometimes completely cold temperature

Post  DEBBIE.P on Sun Jul 18, 2010 1:25 pm


Since moving in 18 months ago we have had constant temperature problems with the Pulsacoil 2000. It used to be hot,cold,hot,cold etc.,no red lights on the boiler. Now, there are still no red lights, but to try and get the mixer shower taps to work the hot tap has to be opened very slowly and the cold tap introduced only when the hot water has stopped squealing. By the time the squealing has stopped the hot water flow is almost a trickle and it can take upto 5 minutes of fine tuning to get a reasonable flow using the hot and cold taps. More and more often the water seems okay for a few minutes and then suddenly the hot water stops completely and you are left with a cold shower. If the taps are turned off again for 10-15 minutes the hot water works again.
I imagine this is something to do with the heat sensors? Ideally, we would like to fix it ourselves so any advice and tips would be great. Thanks


Posts : 1
Join date : 2010-07-18

View user profile

Back to top Go down

Re: Unstable, sometimes completely cold temperature

Post  Mike the Boilerman on Tue Jul 20, 2010 1:53 am


Well yes the first thing I would do is to change the DHW heat sensor. The hot/cold/hot/cold is a classic indicacator of it failing. If the problem persists after changing it I'dchange the other sensor too and check the heat exchanger for scale contaminination.

Not sure what the squealing noise you mention is though. I doubt is is anyting to do with the Pulsacoil but it could be related.

Fix one thing at a time though. Do the DHW sensor first!

Cheers, Mike

Mike Bryant AKA Mike the Boilerman, Gledhill repair specialist, webmaster of www.gledhill-repairs.co.uk & www.miketheboilerman.co.uk. For information about my Gledhill repair service or to make a booking call me on 07866 766366. (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

Posts : 426
Join date : 2009-01-08

View user profile http://gledhill-repairs.forumotion.net

Back to top Go down

Sensor, pump or PCB issue

Post  sunny.sahdev on Tue Sep 24, 2013 3:54 am

It could be the sensor, pump or PCB which are causing these problems. Also check the water level in your header tank. If you are not sure how to, request a free self check Pulsacoil mini guide which will explain this and go over other things you can do. You can request this guide via this link: Gledhill Pulsacoil 2000 Repair


Posts : 383
Join date : 2013-08-21
Age : 32
Location : Vedhas Limited, 960 Capability Green

View user profile http://www.vedhas.co.uk/vedhas-what-we-do/pulsacoil-repair/#

Back to top Go down

Re: Unstable, sometimes completely cold temperature

Post  Sponsored content

Sponsored content

Back to top Go down

Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum