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Tim H.
Tim H., HVAC Professional
Category: HVAC
Satisfied Customers: 3971
Experience:  Experienced in all aspects of HVAC, both residential and commercial.
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My visionpro th8321r001 is set for cooling temp 76. the

Customer Question

my visionpro th8321r001 is set for cooling temp 76. the indoor temp reads 70 and it will not shut off except from my ac breaker.
Submitted: 4 months ago.
Category: HVAC
Expert:  Daniel Plourde replied 4 months ago.

hi i am dan i can help you with this. if you pull the thermostat off the sub base on the wall does the A/C turn off?

Customer: replied 4 months ago.
no
Expert:  Daniel Plourde replied 4 months ago.

ok next if you turn the power off to only the airhandler inside does the outdoor unit still run?

Customer: replied 4 months ago.
No
Expert:  Daniel Plourde replied 4 months ago.

ok next i would turn the power off to the furnace and check the wires and circuit board in the furnace and at the thermostat to make sure noting is burned or shorted and the wires aren't touching each other

Customer: replied 4 months ago.
All connections look good. System is only 2 years old.
Expert:  Daniel Plourde replied 4 months ago.
Ok do you have a meter to test for voltage
Customer: replied 4 months ago.
I have a meter
Expert:  Daniel Plourde replied 4 months ago.

ok in the outdoor unit there is a circuit board in there for the defrost we need to see what we have between the C and Y terminals on that board

Customer: replied 4 months ago.
I did not find a circuit board. However, all power outside tested positive and the unit is blowing cold air.
Expert:  Tim H. replied 4 months ago.

did you still need assistance with this?

Customer: replied 4 months ago.
no, thank you
Expert:  Tim H. replied 4 months ago.

OK