Honeywell DT90E Constant Clicking

Joined
31 Aug 2012
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Orkney
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United Kingdom
Good Morning,

I replaced all my old unipor mechanical thermostats with the Honeywell DT90E's a few months ago.
All was going well until the one in the room that uses the most heat started constantly clicking on off like a clock.
I read on here that if a reset doesn't fix it then the thermostat is knackered and needs replacing. I also reported to Honeywell with the same response.
I bought a replacement and yet again i have the same problem with the replacement thermostat?
All the others are still working fine.
How can i have 2 thermostats in the same room fail, is it the wiring that is the problem or have i just been unlucky with the 2 i have fitted there?
I am considering moving one of the other working stats into that room to see if the same happens. I don't want to keep buying new ones every few months...
 
Hmmm. This has been reported on here before. Click here.

If you have only had the items for a few months then you should take the faulty units back for a refund and buy a different thermostat.
 
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