Red Low voltage wire problem on AC Unit

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Old 09-26-19, 09:19 AM
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Red Low voltage wire problem on AC Unit

Thermostat was staying in delay and not turning the air conditioner on.
At outside unit, by just removing and re-attaching the "red" low volt wire, it made the ac kick on and work properly. About a week later problem happened again. So I go to outside unit, remove and replace the Red low volt wire and unit kicks back on. Could it be a dead short in wire or is thermostat bad and need replacing?
 
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Old 09-26-19, 09:46 AM
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Welcome to the forums.

Did the thermostat actually say "delay" on it or was the word "cool" blinking ?
If there are only two wires going to the outside condenser.... then it sounds like a thermostat issue.
If it's a battery type.... have you changed the batteries ?
 
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Old 09-30-19, 09:34 AM
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PJmax

PJmax: On thermostat, To the left of COOL, there is an arrow pointing to the word COOL , the arrow blinks while in delay until the unit kicks on, then arrow stops blinking. So, my problem is the unit is stuck in delay and unit never turns on.
Thanks for responding!
 
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Old 09-30-19, 11:20 AM
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In a typical system.... that would be a thermostat problem.
The thermostat turns on the condenser. It has no idea if the condenser is actually responding.

However.... you may have a higher end system that uses communications.
We'd need to know makes and model numbers to even begin to comment on a system like that.
 
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