Question about Heating & Cooling
Blower runs and the unit heats, but will not shut off even with the thermostat turned off. The outside unit is not running, apparently the unit is just using the electric coils to heat. It gets hot in the house and I have to turn the breakers off to shut the unit down.
Is the thermostat wired to the unit? If so, note the wire locations and disconnect them. If the unit stops it's the thermostat. If the unit keeps running, it's the unit.
If the thermostat is wireless, change the battery and test the unit.
Posted on Nov 29, 2013
SOURCE: Blower in Attic not running
inside unit has fan control relay , either on control board or can be separate ,except for the 24 volt transformer and the t-stat the units operate separately concentrate totally on the inside unit this is where the problem lies
Posted on Nov 08, 2008
The fans are set to delay for 60-90 seconds to remove all heat from the heat exchanger/heater elements.
If the fan runs any longer than 3-4 minutes after the Emergency Heat shuts off, you may have a bad sequencing relay in the air handler.
Posted on Jan 27, 2009
Check t-stat and make sure fan is set to "Auto", that might be why fan is running all the time, or it could be a fan relay that is stuck closed. It sounds like you A/C is over charged or you have a bad high pressure switch, this was a common problem with this manufacture especially in the heat mode.
Posted on Apr 25, 2009
This could be an indication that there is an error code flashing on the control board and needs to be addressed. Most newer units like this indicate a problem by running the room air blower to alert the homeowner something is wrong. Really! Without shutting off the power to the unit, look for a small viewing port that looks into the cabinet. You should see a blinking light that will blink a number of times, pause then blink another number of times. Once you get this number, say 3-4, look at the wiring diagram pasted on one of the door panels for a diagnostic chart. It will give you a starting point where to look for the problem. If you have one. Or you could have a bad control board or shorted wire. Make sure the air filter is clean since you will be in front of the unit, you would not believe how many times I have to charge $100 to replace a filter the home owner could have done for less than $20.
Posted on Mar 11, 2010
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