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Re: I have Honeywell Pro TH4000 series. The fan wiil not...
Depends on what type of heat you have...gas, oil , electric, heat pump? Make sure it is the right thermostat for your heat source. Some thermostats have a switch on the back for fuel or electric.
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Hard wiring on newer t-stats calls for a jumper from R to Rh. If that doesn't work, or isn't the problem then check for 24V at the unit board from W to common. If you have 24V there the stat isn't the problem. I don't know if your heater is gas or electrical, so there's not much else to say.
It really depends on the circumstances. Are you just trying to turn the fan to the "ON" position from the "AUTO" position? If that is the case, there will be a problem with the thermostat, wiring to the thermostat, or the unit itself. That would sum up a "thermostat" problem for the fan not working. If your trying to call for HEAT/COOL and the fan isn't coming on, that is another issue.
You can try to see if the G terminal is hooked up on the thermostat, that's going to be your "FAN" terminal. If it is connected, you will have to go to the unit and see where it is connected. At this time, we would need to know the model and manufacturer of the unit. Thanks, hope it helps.
this thermostat does not have a deadband option, the only other thing
you can do is set the program for a different temp. the cycles per hour
just restrict how many times the unit comes on.
I don't know if this will be helpful or not, but I just installed a new Honeywell and the Honeywell customer service guy helped me get the wires done correctly. The number is 800-468-1502.
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