Goodman A18-8 electronic furnance and AC troubleshooting
The blower motor will not shut off, even when thermostat taken OFF. I have to throw c.breaker at main fuse box. The system will not cool and I believe the furnance was not getting real hot. The compression will kick on for cool, but will not cool.
Again the blower motor will not shut off.
Any suggestions would be greatly appreciated.
Thanks.
DP
Heating & Cooling - Goodman - GMS90703BXA Heater
Answers & Comments
Check the unit for a high temperature limit switch, usually a round bimetal disc or a square plate that
would insert into the unit. If the switch is bad, it opens up and the fan will run no matter what. Complete the circuit with jumper wire, if fan shuts off
replace switch