Original message
| Wrenchhead61
 |  "AC blower motor startup"
, posted Tue 15 Jun 01:24  
The indoor blower motor on my Goodman GMNTE120 fails to start at times even though the outside condensor unit is operating properly.
A 6 flash error message on my Goodman GMTE120 indicates that the polarity on the 115 volt power source is reversed. I cannot find any error in the power supply wiring. Black to black white to white and green to the bare ground conductor at the furnace.
Black to the breaker, white to the neutral bus, and ground to the ground bus in the service panel. No other error messages are evident.
I grounded the ground terminal at the printed circuit board with an additional wire to the gas piping that goes directly to the meter and then to the underground gas piping. I cannot use the water piping because of a plastic segment.
This additional ground does not correct the situation. The only way to temporarily correct the problem for a day to seven days is to shut off the furnace and wait for a couple of minutes and power up the furnace. The error message persists as 6 flashes but the indoor blower motor starts and ramps up to 20 green flashes or about 1935 cfm as normal operation.
Goodman has no solution other than grounding as I explained above.
Please, does any one have a solution because I am stumped? I have had three service calls by qualified technicians and they just scratch their heads. I am the home owner that installed the entire 5 ton 14SEER unit, the furnace and the H61 evap coil.
Thanks
Wrenchhead61
Wrenchhead61
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Replies:
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| Xenos
Webmaster 
| "Re(1):AC blower motor startup" , posted Tue 15 Jun 17:10
I sure hope one of the guys can help, this is all to common with varibule speed furnaces.
Xenos.
The best way to escape a problem is to solve it.
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