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Goodman GMP075-3 Problem

I'm having an issue with my Goodman GMP075. In the winter, the fan blew, but the gas wouldn't come on. I didn't care much, since the unit was for my upstairs area and kept it cool anyway. Now, mid summer I'm having the same problem with the air conditioning. The fan will blow, but the compressor/fan outside does not usually come on (less and less frequently). I've changed the t-stat and there is no change. At times, I can't turn off the fan motor, even with the switch in off. I have to cut power to the unit to turn it off. This is even after the normal time out that should occur.

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Control board.

Posted on Jul 25, 2008

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Have a goodman gas pack and we lost power due to winter storm over night so now my unit is running but only cold air coming out


the pilot light runs from a very small gas jet and should not be affected by the power outage
however that is not to say that the jet may have frozen over and become blocked putting out the pilot light
AS the system needs power to drive the fan it is possible that without the fan and safety system working , the main gas supply solenoid would have shut down and that could have affected the pilot light
with the power reinstalled try lighting the pilot light
I would say that there would be a pizo starter on the front of the unit to light the pilot loght

Jan 24, 2016 | Goodman Heating & Cooling

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My goodman furnace 80703 fan comes on ignitor glows burner starts , cuts off in 10 secs,furnace starts cycle again. home no heat


I am not a furnace tech but, there are several inputs to a gas valve. There must be an 1) electrical/mechanical indication that there is a draft fan running (to move potentially explosive gas so it doesn't accumulate), 2) adequate gas pressure to the valve, 3) the thermostat must be calling for heat 4) and electrical indication that there is an ignition source. In your scenario, you have the source of ignition, the gas valve is picking up the burner but the gas valve believes there is something missing so it shuts off the gas to the burner. In this case, I suppose you might not have enough gas pressure (is another gas appliance running or is the line to the furnace too small?), a thermocouple probably isn't the problem since the burner wouldn't pick up if the gas valve didn't believe the ignition source wasn't good enough. You could have a plugged chimney or exhaust pipe if it is direct vented since there is also a pressure switch that detects whether there is enough draft once the burner picks up. Really should call a furnace person especially if you don't have a carbon monoxide detector that you trust. If you think you are capable of continuing, you could jumper the various inputs the the gas valve one by one until the burner picks up and stays picked up. Whichever terminals you jumper that accomplish this, is the culprit. Look at the schematic on the side cover to the furnace for this information. Hope this helps...

Oct 01, 2011 | Goodman GMS90703BXA Heater

1 Answer

Engine sputters at low rpm


Could be a number of things. I would start by giving it a fresh set of plugs and a clean carb and air filter. Fresh fuel wouldn't hurt - especially if it's been sitting all winter. Maybe try some 'dry gas' or moisture remover. I would be suprised if this doesn't fix your issue.

Jun 01, 2011 | 2004 kawasaki VN 1600 Mean Streak

2 Answers

I have an goodman model # gsc130241ae ac unit outside it will not come on, no hum, fan doesn't run thermostat control is good swaped out with downstairs unit. Gas heat unit is in the attic, I don't use...


Does the blower indoors run and move air? if not it would mean that you don't have power to the furnace.
The 24 volt transformer in the furnace is used to power the thermostat and the control circuit on the A/C unit outdoors. Or you could have blown a fuse on the computer board in the furnace.
If this has helped please rate me, and If you need more help, give me some more info.
Thanks,
Paul

Apr 02, 2010 | Goodman CLQ36AR49 Air Conditioner

1 Answer

I have an goodman model gsc130241ae unit will not


Hello Does the thermostat have a display?Check emergency wall switch and curcit breaker all on.Fan on should at least run if power.

Mar 31, 2010 | Goodman CLQ36AR49 Air Conditioner

2 Answers

I have a goodman GMP 125-5 furnace. I have


sounds like the primary limit typically behind the gas valve its larger then the others, rectangle in shape with 2 wires going to it. be careful if your bypassing limit this can create a very hazardous condition

Nov 06, 2009 | Goodman GDS80904BNA Open Flame Heater

2 Answers

Goodman AC unit - fan starting outside but not getting cool air.


set the thermostat at alow temp normaly after few minute the compressor and the fan will start , if are stying off check control signal is energising the compressor relay if ok check the relay coil; if all are ok ncheck the capacitor then check if the air is still hot means the charge of freon is less and also before charging check the leak

Apr 27, 2009 | Goodman CLJ30AR32 Air Conditioner

1 Answer

Goodman with 2 thermostats, freezes in summer, no heat in winter


is the system zoned? if so maybe the zoning control board to the damper motor is wired improperly. when a system freezez its because of 1- restricted air flow across coil, (maybe dirty filter) or 2-low refrigerant charge. again could depend on how its zoned.

Feb 16, 2009 | Goodman PHKJ048-1 Air Conditioner

1 Answer

Goodman Heat/Air unit Model # A49-20 Serial # 9909502720


It sounds like the blower motor has burnt up.(the one inside) The unit running for a few minutes then shutting off, is due to the high pressure/temperature safeties. When you removed the panels, did you notice any fan running?

Feb 17, 2008 | Goodman CKL49AR49 Air Conditioner

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