Possibly - the fan is supposed to work in conjunction with the compressor. Otherwise the evaporator will freeze up.
Check to see if the thermostat can be reset to factory defaults because it definitely is not working right.
SOURCE: BLOWER FAN WONT SHUT OFF WHEN THERMOSTATE IS OFF
I have a honeywell blower that runs all time it won't shut off unlees I manually shut it off. How do I reset the fan limit control switch so the fan will come on only when the furnace ignitions ignites. Any suggestions.
Tx: Keith
SOURCE: Battery Issue
This worked! Thank you! It was 49 degrees in the house, and now the heater is working again.
Thank you and warm wished for the new year!
Mary
SOURCE: flashing battery symbol
I had this same problem today. I called Honeywell and they said the flashing broken battery symbol may mean low batteries, or it may mean the battery type is incorrect. They recommend only non-rechargeable alkaline batteries. I was using rechargeable NiMH batteries. Even though they were fully charged, I had the flashing battery symbol and the thermostat relay would not work. I replaced with alkaline, the flashing battery indicator went out, the thermostat works again.
Odd that it worked for 3 months on the rechargeables after first install. I did notice the broken battery symbol came on after the first few days, but I checked the battery charges and they were good, so I disregarded the symbol until the thermostat stopped working today. Apparently there is something about the NiMH performance characteristic that the thermostat doesn't like.
SOURCE: new radaitor cooling fan won't engage
check the fan relay it may be bad. if fans are not working right a/c wont work right either
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p you
Its fixed now. I bypassed the thermostat but the problem persisted confirming the problem was not the thermostat. I discovered that the circuit for "Fan ON" is not the same as for Heat demand or Cool demand, so I was pretty sure it was a bad relay on the controller board. $400 later and the new controller board installed it is back working again.
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