Be sure to seal hole where wire comes through wall.
If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79
On some you can calibrate,or it may be location where mounted
SOURCE: Honeywell T87f 3855 Doesn't Activate Heater
thats becaue you need more than this zone working like you said about the master/slave this zone is a slave.
SOURCE: the thermostats current setting does not match the
Sounds like you have a problem with the furnace try turning the power off to the furnace and then turn it back on to see if this will get it to run. If it has a sight hole in the bottom door look to see if there is a flash code. then take off door and see what the flash code represents as the problem.
SOURCE: My new Honeywell Round Heat Only Thermostat CT87K
Make sure it is level, there are level marks on the base
SOURCE: The temp. setting doesnt match
Without more info i can only give general info. ISOLATE MAINS POWER BEFORE REMOVING PANELS
It sounds like one of several possible problems, temp control switch they use in some models two terminal over heat control components, or temp prob, the first type is a metal case with two terminals, you may see black on this if not a test meter will be required. It should conduct through the terminals, not the case to the terminals, Impedance setting low on meter. The second type is a bit tricky to test and is generaly controlled by an electronic circuit, it is poss it could be one element blow inspect them a Black Grey spot blow out or a bulge on the element surface. This can cause temp problems.
Hope this has been helpful
John
SOURCE: Danby model DBC514BLS. Temp
The problem you describe it seems to be from a dusty condenser so you need to remove the grill on the bottom and also at the back and using an air blower, or a vacuum and brush in order to clean the condenser coil for all the dust . The dust is blocking the sorounding air to cool down the condenser and litle bu little is loosing its efficinecy. Of course this is the most frequent case by 90% so you have to do this in order to confirm thatis not due to any part mulfaction like thermostat or other parts.
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