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When I turn on my Ac it just run 1 minute than automatic turn…

Customer Question
when I turn on my...
when I turn on my Ac it just run 1 minute than automatic turn off, try again it is happen aggain
Submitted: 3 years ago.Category: HVAC
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Answered in 2 minutes by:
6/30/2015
HVAC Technician: airheatman, HVAC Technician replied 3 years ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,542
Experience: Furnace, A/C and heat pump specialist.
Verified
Hello. My name is ***** ***** I'll do my best to help. Let's get started and see what we can do.What is model on unit and if split system does both indoor and outdoor go off?
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Customer reply replied 3 years ago

HVAC Technician: airheatman, HVAC Technician replied 3 years ago
Reply did not show up
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Customer reply replied 3 years ago

my AC is one unit in the roof top no indoor or outdoor, I was change dual capacitor contactor and thermostat , my AC is goodman brand, model# *****

HVAC Technician: airheatman, HVAC Technician replied 3 years ago
Are you able to go on roof and do some hands on troubleshooting and do you happen to have a multi meter for some testing?
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Customer reply replied 3 years ago

yes i can go on roof do some thing and I have multi meter

HVAC Technician: airheatman, HVAC Technician replied 3 years ago

Excellent. Lets first narrow the issue down to being inside the unit or an external problem like thermostat or wiring.Go to unit .Disconnect the control wires going to the thermostat. Twist blue common and yellow Y together and let's see if unit will stay running or if it still shuts down after the 1 minute. We will go from here.

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Customer reply replied 3 years ago

when I did like you say, the unit same before run and than shuts down

HVAC Technician: airheatman, HVAC Technician replied 3 years ago
OK next we will use the volt meter. Reconnect the wires to thermostat.Turn thermostat to call for COOL.Put one lead on the blue wire that is coming from unit,going to thermostat and the other lead on the yellow wire and see if we have 24 volts ac.
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airheatman, HVAC Technician
Category: HVAC
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