Heatpump won't start and blower fan won't stop

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Old 03-25-14, 12:12 PM
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Heatpump won't start and blower fan won't stop

I have a Goodman heatpump with an electric furnace. The heatpump will not start regardless of the temperature setting. And the blower fan runs continuously. I checked the heatpump outdoor fuses, and they are good. The unit is getting 240v. Also the EM electric heat works. I searched the forum, but I don't see where both problems occurred at the same time. any ideas?
 
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Old 03-25-14, 12:47 PM
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The blower thinks the heat pump is running. Lower the setpoint on the stat and see if it goes off. Let us know what happens.
 
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Old 03-25-14, 12:50 PM
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you could have a number of different problems.
check to make sure you are getting 24v to the outdoor unit.
check to see if there is 24v going to the contactor coil
look at the capacitor in the outdoor unit to see if it is swollen or shows signs of leaking an oily substance. be careful even with the power off a charged capacitor can zap you
 
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Old 03-25-14, 01:48 PM
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I raised the the heat setting, and the Aux Heat symbol and the fan symbol both came on. Then I lowered the heat setting to below the current temperature, and the Aux Heat symbol and the fan symbol both disappeared. But the blower is still running.
 
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Old 03-25-14, 02:17 PM
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Can you post the model #?
 
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Old 03-26-14, 02:00 PM
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The make is Goodman, the model # is CPLE36-1C.
 
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Old 03-27-14, 06:37 AM
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Are you talking about the furnace blower or the outside fan?
 
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Old 03-27-14, 08:07 AM
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The furnace blower runs continuously. The outside heatpump fan does not come on at all.
 
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Old 03-27-14, 10:05 AM
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Take the stat off and see if the fan stops. Can you post the model# of the furnace?
 
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Old 03-27-14, 12:41 PM
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I pulled the thermostat off the wall, and the furnace blower kept running.
The furnace make is Goodman.
The furnace model is AE60-20A.
Here is the furnace wiring diagram:
Name:  Furnace_wiring_diagram.jpg
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Old 03-27-14, 02:54 PM
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Sorry, the diagram is to small for me to read it. If you can take a pic of the left side only.
 
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Old 03-28-14, 10:33 AM
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More detailed pictures of the wiring diagram.

Here are two pics. The first one had the flash on so it is clear but whites out the center of the picture. So I also include the second picture which shows the center of the diagram clearly.
Name:  Furnace_wiring_diagram_big_flash.jpg
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Size:  49.8 KBName:  Furnace_wiring_diagram_big_no_flash.jpg
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Old 03-28-14, 11:16 AM
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I'm still looking for the actual service manual but I'm leaving a link for the detailed operation of your unit. It uses an ECM type motor that is a variable speed electronic motor controlled by a logic board. That is a sophisticated air handler.

I thought it used the electric heat sequencers to control the blower but it appears to be controlled directly from the logic control board.

Goodman lit Good_AE_SS247E.pdf
 
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Old 03-28-14, 02:43 PM
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With the stat off and you still have fan, then it is most likey something in the board. The only thing you can do is pull the G wire off the board and see what happens, on the odd chance that the stat wires are whacked.
 
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Old 03-31-14, 08:32 AM
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Repairman is on the way...

Well since it appears to be a board issue, I called a service guy to come and take a look. He is due here any minute. I will update this thread with his finding. Thanks for your ideas, at least I ruled out a few things.
 
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Old 03-31-14, 10:40 AM
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Yep, it was the control board.

At first he said it was my thermostat, until I told him that when I remove the thermostat the fan kept running. Then he investigated further and determined that it was the board. So thanks skaggsje, you probably saved me from additional down time with that quick test

Then I hear that the control board was obsoleted by Amana. So they had to search a while to find the part. Now it is on its way to my house.

Thanks everyone!
 
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