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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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My thermostat say its cooling, and fan is out, but outside

Customer Question

My thermostat say its cooling, and fan is out, but outside AC unit doesn't turn on (
Submitted: 1 year ago.
Category: HVAC
Expert:  airheatman replied 1 year ago.
1.Are you saying indoor fan is running?2.Do you have a volt meter so we can do some troubleshooting?
Customer: replied 1 year ago.
1) indoor fan is running (pushing room temp air through the house)
2) no volt meter
Expert:  airheatman replied 1 year ago.
OK without a meter we are limited to what we can check. Can you open outdoor unit and tell me if the plunger on contactors appears to be pulled in? And do you want to run to Walmart and grab a cheap meter? You can get one for about 15 bucks.
Customer: replied 1 year ago.
On the disconnect box next to the unit? Or open the actual unit?
Expert:  airheatman replied 1 year ago.
The actual outside unit
Customer: replied 1 year ago.
No, that's not going to work. I'll look for help/answers elsewhere.
Expert:  airheatman replied 1 year ago.
OK. Our first step is to determine if we are getting 24 volts to those contactors and plunger is being pulled in.Can you stand by outdoor unit and have someone turn thermostat off and on and see if you hear a click from contactors in outdoor unit?