Recently my entire building (converted house-three apartments) had an issue with our heat. The landlord called a guy in and it was resolved for everyone but my apartment. We had a different thermostat which was cranked up to 90 degrees, and only producing what (it said) was 69 degrees (I checked with another thermometer--it was more like 60.) So our landlord had our thermostat replaced (with the Honeywell CT87k) and it worked fine--the room was heated to the exact temperature I called for.

Now, however, I'm having the same problem. (Just started last night) It was working fine for almost a week, so I'm not sure what the issue could be.

Does anyone have any recommendations as to what I should check? The heat isn't off entierly--it's 35 F outside, and roughly 62 F in here, but the baseboard heaters are fairly cold (lukewarm) to the touch.

For wiring, I can see four wires coming out of the wall: Black, Yellow, Green and Red. The Black is in the 'R' slot, the Yellow is in the 'W' slot. The 'Y' (which I believe it's supposed to be since it's for cooling, which this thermostat doesn't do.) The Green wire isn't connected to anything, and the Red loops back into the hole they're all coming out of, and I can't see the end to know if it's jumped to anything or not.

I'm assuming it's a thermostat issue, and not an issue with the furnace. (Considering it's only my apartment that seems to be having issues.)

Any and all help as to what to try/look at would be greatly appreciated. Thank you!:)

Call the landloard and tell him your unit is cold. Do not assume it is a thermostat problem. The thermostat controls pumps,electric valves and other deviced designed to work and deliver hot water to your unit.

By messing with your thermosat/wires etc. you are opening the door for you to get blamed for the problem and the associated repair costs and as a renter you do not want to go there.

Actually we just bought this product and its doing the same thing! The heat will come on but it won't shur off! We have a black, white and red wire and tried a million different combos. I don't assume it is the thermostat I know it's the thermostat. CT87K was a very dissapointing problem and I hate to see so many complaints about it...

There have been thousands of them hooked up with no problems. It is always a possibility to get a bad one no matter which thermostat you buy. Could be a quality control problem in China. Everybody is so cheap today they would not spend the money for a good American made product so its off to China they go and so goes the quality control.

Seams like the thermostat just is no good... never should have changed the way they were my old honeywell lasted 30yrs... I have tried 3 so far,, none worked right... maybe its time to sell my stock in the comp.& find a new brand...