I have recently had a new boiler installed and it came with a Honeywell CM927 wireless thermostat.
A couple of weeks ago I noticed that the temperature on the display was way off (claiming around 20 degrees when the heating had been off all day and I knew it to be only around 16 or so at the time). I ignored this though, as the heating still seemed to be working OK when instructed (by 'auto' and 'manual' settings).
Anyway, not sure if the glitches are linked but this morning when I looked at the CM927 (I do not run the heating overnight, so the unit is set to 'off') the entire LCD display was lit - by this I mean every icon and every stroke (usually used in different combinations to form numbers) was displayed and the thing is non-responsive in every setting ('auto'/'date'/'prog'/etc.).
So I now can't program the CH system.
I tried replacing the batteries, even though they clearly are not dead as the display is lit, indicating power(!) but this did not help. As far as I can tell from the product user guide - which is not particularly helpful as almost every troubleshooting point simply directs one to call the installer! - there is no other way of trying to reset the unit? I did find a post somewhere online that described a way but as I can't navigate around any of the functions on the screen (as they are all permanently 'on') I couldn't try it!
Can anyone help?? I would really, really appreciate ideas for solutions. Thanks
Kate
A couple of weeks ago I noticed that the temperature on the display was way off (claiming around 20 degrees when the heating had been off all day and I knew it to be only around 16 or so at the time). I ignored this though, as the heating still seemed to be working OK when instructed (by 'auto' and 'manual' settings).
Anyway, not sure if the glitches are linked but this morning when I looked at the CM927 (I do not run the heating overnight, so the unit is set to 'off') the entire LCD display was lit - by this I mean every icon and every stroke (usually used in different combinations to form numbers) was displayed and the thing is non-responsive in every setting ('auto'/'date'/'prog'/etc.).
So I now can't program the CH system.
I tried replacing the batteries, even though they clearly are not dead as the display is lit, indicating power(!) but this did not help. As far as I can tell from the product user guide - which is not particularly helpful as almost every troubleshooting point simply directs one to call the installer! - there is no other way of trying to reset the unit? I did find a post somewhere online that described a way but as I can't navigate around any of the functions on the screen (as they are all permanently 'on') I couldn't try it!
Can anyone help?? I would really, really appreciate ideas for solutions. Thanks
Kate
