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I have a Ruud UHLA-HM3617JA air handler. Recently, the blower

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I have a Ruud UHLA-HM3617JA...
I have a Ruud UHLA-HM3617JA air handler. Recently, the blower has started to turn on again after shutting of on "auto" when cooling. It will run until the temperature is correct and shut off with the compressor. After a few seconds, it comes back on without the compressor, runs for a minute or so and shuts off again.
When running in the "on" setting, the blower reduces to circulate speed instead of staying constant when the compressor shuts off.
I replaced the thermostat and that did not help. I am guessing there is a blower relay, timer or control board that is going south.
I don't have a wiring diagram so I can't identify the part.
Any advice?
Submitted: 1 year ago.Category: HVAC
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Answered in 30 minutes by:
4/2/2016
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 513
Experience: Owner at Gaztech
Verified
Hello, I am Luke, here to assist you.Are you still there?
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Customer reply replied 1 year ago
yes
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago
Hey you should find the wiring diagram inside the air handler
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Customer reply replied 1 year ago
"Should" is the hope. I don't have a wiring diagram is the fact
HVAC Technician: Gaztech, HVAC Technician replied 1 year ago
Well it is no where to be found on the net, could find that on monday when dealer opens, sorry I couldn't help you.
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HVAC Technician: BillyHvac, Journeyman HVAC Tech replied 1 year ago
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,767
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Verified
Hello, Actually the info is available. The issue will likely end up being a module on the motor. This is an X13 motor which has constant 220v but gets low voltage signals to determine speed.I will give you your wiring as well as a x13 service manual Service Manual Picture of wiring attached
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BillyHvac
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,767
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