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Tinstar's avatar
Tinstar
Explorer
Jul 16, 2018

What causes an roof-top A/C to stop for a while

My brother's roof-top ducted A/C unit works good,,,, sometimes. He said it will work for several cycles, switching off and on, then it will start heating up and the A/C will not come on. Sometimes h...
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Joatha's avatar
Joatha
Explorer
Jul 17, 2018
A couple of more questions:
1. When it dies, is the thermostat still on? If its on, then its not the t-stat (or less likely anyhow).

2. When it dies, does he have 120V at the AC unit? He should be able to to drop the bottom and check for voltage inside the unit.

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