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https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl DIY Forum >> Plumbing Questions >> hts3 https://www.askthetrades.co.uk/cgi-bin/yabb/YaBB.pl?num=1429609477 Message started by patrickwww on Apr 21^st, 2015, 10:44am

Title: hts3
Post by patrickwww on Apr 21^st, 2015, 10:44am

How would I know if my HTS3 needs replaced. I have my thermoclock or whatever it's called at 60 the water is warm .could it be the faulty Drayton HTS3

Title: Re: hts3
Post by Headrush on Apr 21^st, 2015, 11:30am

If you adjust the control up and down, you should hear it click on and off and see where it is doing so. When it is on, the heating system should come on and hot water will flow to the cylinder and heat the water inside. If this does not happen it usually points towards an electrical problem with the system like the 3 port valve for example, depending on your system.

A voltage test on the thermostat output will determine if it's working ok or not.

Title: Re: hts3
Post by thescruff on Apr 21^st, 2015, 1:36pm

As above but could be many things, including scale in the cylinder or a poor contact (stat/cylinder)

Cylinder stats are pretty cheap so probably worth changing it and seeing what difference it makes