Ask The Trades - can a water thermostatic regulator go faulty?

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	Jan 29^th, 2026, 11:58pm
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Ask The Trades › DIY Forum › Plumbing Questions › can a water thermostatic regulator go faulty?

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can a water thermostatic regulator go faulty? (Read 1465 times)

fin01

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can a water thermostatic regulator go faulty?
Oct 4^th, 2010, 7:15pm

hi
i have under floor heating that is not coming on ... there is hot water right up to the motorised valve(honeywell) then a bend to the water regulator (a reliance and set at 3) then to a water circulation pump ... now the motorised valve seems fine (opening and closing) and the pump is spinning so im wondering is it possible the reliance water regulator is faulty or maybe stuck / underfloor heating has been off all summer! .. just trying to give as much info as i can , any help or thoughts would be welcome

Fin

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thescruff Global Moderator Trade Member Author Offline Who said plumbing was easy. Posts: 6037 Total Thanks: 147 For This Post: 0 Gender: Trade: Plumber	Re: can a water thermostatic regulator go faulty? Reply #1 - Oct 4^th, 2010, 11:57pm Open the valve a few notches and test it.
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Ask The Trades › DIY Forum › Plumbing Questions › can a water thermostatic regulator go faulty?