AC not coming on .. not getting 24 volts at contactor

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  #1  
Old 05-23-19, 03:40 AM
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AC not coming on .. not getting 24 volts at contactor

I have 24 volts coming into the condenser but I cannot get 24 volts at either end of the Contactor.

if I push the contactor, the AC does come on.

what could be impeding me to the contactor?

TY
 
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  #2  
Old 05-23-19, 06:01 AM
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Does your unit have pressure switches?
Don’t press the contactor in manually, it can be dangerous and cause damage.
Look up arc flash.
 
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Old 05-23-19, 09:59 AM
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Once you have confirmed you have 24vAC AT the condenser coming from the house you need to trace the wiring thru the unit. There should be a low pressure switch in line. There may be a high pressure switch. There could be a delay timer.

When checking for 24v at the contactor..... check at the coil terminals..... not from the terminals to ground.
 
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