Hi,

I really appreciate any help that someone could provide me. I have an Amana 80 SSE AC and heater system. I realized that when I turn the AC on, nothing happened. So I decided to see if the heater works. I raised the thermostat temperature and a motor came on while I saw 4 red flashing lights going through a few cycles. This process takes about 10-15 seconds and then the motor stops and no sign of life after that. I checked the fuse and it is intact. Then I decided to put the fan on manually on the monitor by switching it from auto to manual on. The fan does not get turned on either. I checked the online manual for 4 flashing lights and I see the following as possible causes:

"The probable cause is either low conditioned air flow due to
dirty filter or resistance in duct work, faulty limit, faulty
blower, or blower speed set to low."

Since the fan or blower does not come on in manual mode, I am guessing that the blower needs to be replaced. I have checked on youtube for links on how to replace the blower (https://www.youtube.com/watch?v=xUTvbr1kmDk) and it is fairly straight forward process to go through as I am a handy man but I have never worked to this extent on heating and AC system.

My questions are:

1- Based on the description of the problem, is blower the source of the problem before I order the part? Could it be the capacitor? What else do I need to do to find the source of the problem?

2- If blower is the source of the problem, will AC turn on as well once I replace it?

Thanks in advance for any help and support you can provide me.

 

A model number would be of assistance.
It is often located in the burner section of the furnace.

 

I will need to get the model number later on. But the inside of the system looks identical to the video that I shared. Thanks for the reply.

 

If your furnace has a PSC motor like the furnace in the video it could be a capacitor issue.

I would also verify that you are getting 24vac to the G terminal and you have 120 volts AC to the motor before considering replacement.

 

You asked if replacing the motor would make the A/C work again. Does the outside unit come on now when you set the stat to A/C and a call for cool ? Remember... the condensor could take from 3-5 minutes to start.

If yes... then the inside blower is your problem.
If no... the outside unit doesn't run.... then you have other issues.

 

I asked a professional to come in to diagnose the problem and he tells me that the control board has gone bad and needs to be replaced. I thought to close the loop on this topic since I opened it up. Thanks.

 

Interesting as the furnace board does control the blower but rarely the outside condensor.

Anyway.... thanks for letting us know the outcome.