Questions & Answers for: honeywell cm921 settings

HONEYWELL CM921 ROOM THERMOSTAT I AM TRYING TO SET THE TIMES FOR MY CENTRAL HEATING TO COME ON BUT HOW DO I SET IT SO THAT IT COMES OFF WITHIN A COUPLE OF HOURS, RATHER THAN STAYING ON ALL DAY ...

Honeywell CM921 Showing room temp at -24 degrees, How do I reset? Thermostat is showing -24 degrees and heating system is burning. The actual room temp is approx +22 degrees so the sytem is not ...

cm921 does not seem to switch back on quick enough the room goes cold before stat switches back on. the flame is on in the back ground sounds like you might have to move dipswitch to control cycles ...

...honeywell CM921. Please help. I have read the user manual but this only gives info on room temp, doesn't actually say how to switch the radiators on?? maybe this can't be done?? any help would be ...

how do i set on/off times on CM921. eg. o at 6.30 off at 7.30? I have no idea - just had one fitted today - its a mystery!

...honeywell cm921 and we cant set the therm astat to come on in the mornijng and then go off then come on again in the afternoon on timer please can you help Your CM921 has 6 built in temperature ...

...honeywell cm921 room thermostat never turns off the central heating. If I set my off temp really low will this solve the problem, but if its really low does this become the target temp and my heating ...

My CM921 is displaying a room temperature of 38 degrees, this does not reflect the actual room temp', the only way we can get the heating to fire up is to set the target temp' to a higher temp' - ...

...HONEYWELL CM921 WIRELESS TEMPERATURE CONTROLLERAND WE SET THE TIMES BETWEEN 6 AM AND 8 AM THEN 4 PM AND 6 PM THEN 8PM AND 9 PM HEATING STAYS ON LONGER THAN TIME SET AND WHEN ON TIMES IT DOES GO OFF ...

honeywell cm921 keeps automaticaly turn target temp to 35 c My target temp is set at 19 but when i turn heating on it automaticaly goes up to 35 in either manual or auto. Is there a way of fixing this