Honeywell CM67 Wireless Thermostat behaving odd

ssjjsd · 1 Nov 2009

Please help, my Honeywell CM67 Wireless Thermostat which has worked for about 5 years without any problems has recently started to turn the boiler on outside of the programmed on/off times, if I switch to AUTO, the boiler fires up even though the off time is 9:30 am and the next on time is 6:00pm???

Tris123 · 1 Nov 2009

May sound stupid but have the batteries been changed recently? if they have check the receiver box on a combi should be near the boiler if a heat only probably in the airing cupboard a red light usually indicates a problem with signal and will probably need a rebind.

Also, check when you put it on auto if the green light comes on on the receiver if so check your off temps on your thermostat.

bengasman · 1 Nov 2009

Override by any chance?

dreadnoughtheating · 1 Nov 2009

Has the optimisation option be reactivated? I can supply instructions on how to 'de-activate' if needed.

DH

ssjjsd · 2 Nov 2009

Cheers but a re-bind seems to have solved the problem

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Honeywell CM67 Wireless Thermostat behaving odd

ssjjsd

Tris123

bengasman

dreadnoughtheating

ssjjsd

DIYnot Local

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