Questions & Answers for: chromotherm

We have a Honeywell Chromotherm III thermostat and it has an error message "-AC". No fan, AC, heat, etc. Any ideas? I almost think you have no power source to the thermostat as if the power ...

No A/C Msg. On Control Unit Our Honeywell Chromotherm III was not working this morning and we have a tenant in the basement apartment we rent. This morning it was not cool and when my wife looked at ...

Chromotherm 1V plus how to put intoAdaptive Intelligent Recovery This thermostaat was installed when the new furnace was installed almost 5 years ago. I love ther flexability of this Thermostaat but I

Inaccurate current room temperature reading I have a Honeywell Chromotherm IV Plus thermostat. The current room temperature displayed is off - too low - by about 6 degrees. Is this adjustable? It is ...

how to reset honeywell chromotherm III http://customer.honeywell.com/TechLit/pdf/69-0000s/69-0341.pdf

I have a honeywell chromotherm iii unit. Right now it is flashing the time with the notation "AC". What does this mean? The air hasn't worked for a day or so. "AC" means no AC power to thermostat

honeywell chromotherm iii says and beeps low battery, even though i just replaced the batteries check that the springs on each end of the batteries are keeping them together tightly (connected) if ...

My furnace has stopped working. the thermostat (Honeywell Chromotherm III) displays HOLD - AC. What does this mean? I replaced the batteries but nothing has changed. Try to find a reset button or just

HOneywell Chromotherm IV Plus screen won't light up at night - that is, unless you replace the batteries....thanks for the answer If it has backup batteries try replacing them.

how do I set the timer (clock) on a model t8090a 1007 chromotherm thermostat. Try Googling (chromotherm)(t8090a 1007)(manual) without parens for instructions.