SOURCE: dehumidify mode also cools
Some units do cool/dehumidify only im afraid why cant you let the unit dump its hot air into the room then it wont heat or cool the room?
SOURCE: fan runs constantly on cool mode
Simple Question: Did you check to see if the fan switch on the
t-stat is in ON or AUTO? If ON the fan runs nonstop. If in auto the fan cycles with the outdoor unit.
next does the fan shut off if you turn the t-stat to off?
A stuck relay should keep the fan running all the time.
Sometimes if the relay is stuck you can whack the side of the Air Handler and the connection will break.
Sometimes instead of a relay there is a stack switch.
It's a little black stack of 3 disks this is a bi-metal switch.
they do get stuck more often than relays.
The fan relay may be on a electronic board. I don't know for sure without seeing your unit.
Good Luck Phil
SOURCE: My Vornado TouchStone Vortex heat 500 Heater - temperature
After calling Vornado Corporation, they suggested that the room temperature monitor might be failing as it read 65 degrees no matter where you started the heater. I took the unit back to the store I purchased it from, and we unpacked another unit and found the same problem existed. Therefore, the product is not capable of heating a room properly and I will continue my search for a space heater to control the temperature in my upstairs office which does not have air ducts for heat.
If anyone has recommendations I would be interested in their comments.
Thank you.
SOURCE: Will Not Heat
On the outdoor unit the fan should not be running, on the indoor unit the fan should be running. If you then check the outdoor unit with fan not running, you should be able to hear clearly that the compressor is actually working. If this is all correct, it is possible that your fourway reverse valve is seeping and needs to be replaced.
SOURCE: thermostat wiring diagram for heat and cool unit
use an ON-OFF controller whose output can be given to themostat or a circuit breaker....
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