Centre/Wolsley thermostat problem

[womble69]

I've just had an EHE0200155 room thermostat fitted as part of a new CH installation. It's hard wired to a Baxi Duo-tec combi boiler.

The stat seemed to work all right for a week or so but now seems to have become very inaccurate - a full 5 degrees out in fact (checked using a thermometer).

As the boiler has no 'HW on, CH off' option, it's a bit alarming as this means that I have very little control over the boiler.

Has anyone else experienced failures with this unit? Suggestions as to a more reliable alternative? (I only want a very simple room stat. No requirement for programming or anything fancy like that).

 

[Rob]

You should have some sort of programmer, even a basic mechanical timer costing about £30 can be fitted direct to the boiler.

As for the stat, if the neutral isn't wired to these things then it wont regulate heat as effective as it should.

 

[womble69]

The boiler has a mechanical timer fitted. It's switched off though. Heating is simply controlled by a simple room stat.