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Old 10-30-2011, 12:04 PM   #1
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One Goodman unit dead, COLD KIDS!!!


Morning all, sorry to bother everyone on Sunday morning! My twin 5 year olds were cold last night! I've got a Goodman furnace (w/Goodman heat pump system) which used to have a Robertshaw t-stat hooked up to it. The t-stat burned out, so I replaced it with a Honeywell 7500d. This is exactly the same setup I have on my downstairs unit (this unit is fully functioning). I copied the setup from downstairs, but I think I screwed up where the wires for the float switch go (there is no float switch downstairs). When I first hooked it up, it all worked, but would NOT shut off. I moved around the float switch wires, and put it back together, now it is dead.

I used a multimeter and tracked the power as I was hoping it was just the 60a fuse on the unit. No such luck...


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Old 10-30-2011, 12:07 PM   #2
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One Goodman unit dead, COLD KIDS!!!


removed video


Last edited by nooch13; 10-30-2011 at 12:31 PM.
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Old 10-30-2011, 12:28 PM   #3
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One Goodman unit dead, COLD KIDS!!!


Remove the link for the video, and post model# of the inside & outside units, and post a picture of the thermostat hookups.
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Old 10-30-2011, 12:31 PM   #4
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One Goodman unit dead, COLD KIDS!!!


pics and model numbers coming...
Thanks!
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Old 10-30-2011, 12:46 PM   #5
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One Goodman unit dead, COLD KIDS!!!


do you have 24Vs no heat call at the secondary off the TR in the furnace what "float switch" is that on the condensate pump? that pix is the hi limit fan limit
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Old 10-30-2011, 01:01 PM   #6
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One Goodman unit dead, COLD KIDS!!!


Heat pumpm model #

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Old 10-30-2011, 01:02 PM   #7
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One Goodman unit dead, COLD KIDS!!!


furnace model number

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Old 10-30-2011, 01:03 PM   #8
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One Goodman unit dead, COLD KIDS!!!


left side of thermostat...

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Old 10-30-2011, 01:04 PM   #9
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One Goodman unit dead, COLD KIDS!!!


right side of thermostat

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Old 10-30-2011, 02:29 PM   #10
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One Goodman unit dead, COLD KIDS!!!


Is there a fuse inside the unit besides the breaker??? I would bet there is, I just can not find it...
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Old 10-30-2011, 02:36 PM   #11
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One Goodman unit dead, COLD KIDS!!!


there might be one on the solid state board if there was any within the furnace...can you run the FAN ONLY off the stat switches...want to see if you have 24Vs....present?did you shut the power before working on the stat change out if you sparked a wire with an un-fused transformer the TR is shot...
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Old 10-30-2011, 03:22 PM   #12
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One Goodman unit dead, COLD KIDS!!!


No fuse on the board, just went up and looked. 2004 model year furnace. I did check and find I have 24 v getting to the main board at R and M1 for sure. Am I looking at a transformer? Is that the thing I took a picture of?
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Old 10-30-2011, 03:45 PM   #13
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One Goodman unit dead, COLD KIDS!!!


no, but if you have FAN run off stat that tells me you have 24V control voltage something is hapening with the board need to get a servcie guy in....
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Old 10-30-2011, 03:51 PM   #14
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One Goodman unit dead, COLD KIDS!!!


Nothing is running right now, fan included...In the wiring setup, it goes, main breaker, transformer, board, correct? But the t-stat is wired to to board at r, is it not? That would send 24v to the main board and the transformer could still be bad??? Am I thinking right? I found a transformer replacement for $18. http://arnoldservice.com/goodman_janitrol_parts1.htm

You think that one would fit? Worth the chance if so compared to a very pricey service call...
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Old 10-30-2011, 04:03 PM   #15
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One Goodman unit dead, COLD KIDS!!!


if you can run the FAN from the ON setting from the switch on the stat subbase then the TR is shot...if you have no lights on the board even a blinking lite you have no TR meaning it is burnt out....any lite on the board has to be 24V produced even just sitting there,....

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