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Coleman DGAA blower fan speed
Posted: Wed Nov 24, 2010 1:15 am
by solden
Hi, I have a coleman- DGAA and split a/c system . just turned on heat for the season in iowa. however the blower will only run on high speed . wires are right on the thermostat & control board if i take the high speed wire off the cool terminal fan won't run , only with high speed on cool terminal , i'm guessing the relay on the board is bad ? also a little bit of a grumbling noise when fan first starts bearing dry, no play in shaft ,wheel is clean
Re: Coleman DGAA blower fan speed
Posted: Wed Nov 24, 2010 9:22 am
by gordo48111
Until Robert replies to this post, does the blower run constantly or only when there is a call for heat?
Re: Coleman DGAA blower fan speed
Posted: Wed Nov 24, 2010 10:02 am
by solden
no it runs fine regular cycle , just on high speed
Re: Coleman DGAA blower fan speed
Posted: Fri Nov 26, 2010 5:35 pm
by Robert
Hi,
Test board and see if you 24vac across W and C.
Then, see if you have 120vac across HEAT terminal and one of the NEUTRAL terminals.
Thanks,
Robert
Re: Coleman DGAA blower fan speed
Posted: Sat Nov 27, 2010 5:19 pm
by solden
yes i have 26 vac across w and c and 120 on heat terminal , so since the fan motor is a grumbling at start up for a few seconds could it be a bad motor ?
Re: Coleman DGAA blower fan speed
Posted: Sun Nov 28, 2010 12:14 am
by Robert
IF there is a fan run capacitor, replace it first. IF there is no change, then motor is most likely bad.
Can give order info on parts if needed.
Thanks,
Robert
Re: Coleman DGAA blower fan speed
Posted: Mon Nov 29, 2010 11:22 am
by solden
hi, i see this is a 7.5 mfd 50/60 hz 440 vac , i can get one local for 8.00 but it's a 370 vac any problems with that. if so i,ll just let it run it till i can afford a new unit motor and all
thanks for all your help
Re: Coleman DGAA blower fan speed
Posted: Mon Nov 29, 2010 5:00 pm
by Robert
Must be 440. IF you ever have one that is 370, replacement can be 370 or 440.
For 440 though, it must be same.
Thanks,
Robert
Re: Coleman DGAA blower fan speed
Posted: Mon Nov 29, 2010 7:10 pm
by solden
OK, thanks for all your help it runs fine just on high speed cools the some temp down at the registers,
Re: Coleman DGAA blower fan speed
Posted: Tue Nov 30, 2010 6:05 am
by Robert
You're very welcome, happy to help.
Thanks,
Robert
Re: Coleman DGAA blower fan speed
Posted: Wed Dec 08, 2010 3:00 pm
by solden
Hi, the park manager has a run cap. that is a ngm s1-02435602000 single 7.5 440 rectangular. its made of plastic he said it would work ,is that true don't want to have a fire.
Re: Coleman DGAA blower fan speed
Posted: Wed Dec 08, 2010 7:39 pm
by Robert
As long as it is 7.5mfd / 440vac .
Thanks,
Robert