[Gene]

You are welcome. But I do not think the voltage over 13 VDC is a good reading. You may want to check it at the control board too.

Gene.

[freddyrick]

[quote=Gene;797641]You are welcome. But I do not think the voltage over 13 VDC is a good reading. You may want to check it at the control board too.

Gene, you are correct and thank you. The voltage output at R and Y was up to 19.5vdc. I bought a new motor, but instead of installing it, I tested the resistance and it read the same as the old motor, although each reading was polarity specific. I got two different readings on R/W at the new motor when I reversed polarity of the ohmmeter. Why is this? Also, the old motor still runs for a couple of seconds when first plugged in. So, I'm guessing its the motherboard. Wish I knew better how to test the motherboard before buying a new one.

[Gene]

[quote=freddyrick;798121]

Originally Posted by Gene

...although each reading was polarity specific. I got two different readings on R/W at the new motor when I reversed polarity of the ohmmeter...

I never heard about such things. Check how is your ohmmeter set.

Gene.

[freddyrick]

I never heard about such things. Check how is your ohmmeter set.

Everything is set correctly. Could it be because this is a variable speed induction motor?

[Gene]

What kind of meter did you use?

Gene.

[freddyrick]

Originally Posted by Gene

What kind of meter did you use?

Gene.

Basic digital ohmmeter.

[Gene]

Originally Posted by freddyrick

...I got two different readings on R/W at the new motor when I reversed polarity of the ohmmeter...

What was the difference?

How good is the battery in your meter?

Have you replaced the main control board yet?

Gene.

[freddyrick]

Originally Posted by Gene

What was the difference?

How good is the battery in your meter?

Have you replaced the main control board yet?

Gene.

I just got a new board to go with the new motor, and will install them together and hope for the best. Thanks.

[Gene]

You are welcome. Both new parts together should fix it.

Gene.

[freddyrick]

Originally Posted by Gene

You are welcome. Both new parts together should fix it.

Gene.

Hello again. Installed both parts and it worked fine for over a month. Yesterday I found the evaporator coil all frosted up. Defrosted with the blow dryer, seems to be working OK again. Any ideas what might have caused the coil to frost up? Thanks.