On a Honeywell thermostat the flashing means that the system is in a delay to turn on the compressor. This is used to protect the compressor from coming on and off too often. The normal delay is about 5 minutes. After that the system should come on. If not there is s problem.
In order to help us help you we will need a little more information. What happens either at the inside unit or at the outside unit after the thermostat stops flashing "Cool"? Any fans come on? Do you hear a "KLUNK"? Any sparks? Please let us know so we can help.
I am not seeing any fans come on on the outside unit, and the thermostat stops blinking "cool on" and displays a constant "cool on".
Sounds like the outside contactor is bad may need to carfully push in contacts manually with a screwdriver - if fan & compressor starts you may have a bad coil on the contactor - replace it .
Same issue here.. AC always started up immediately upon lowering temp. Now suddenly, a delay of 3-5 min. happens before the ac starts up. Then it cools normally. What changed ?? Clues ??
Does the Honeywell thermostat have a delay setting in it's software ???
fans on changed battery but cool on still blinking
×
Still nothing happening can hear a buzzing see flashing 75 cool on help
No sparks. Just not coming on
31,776 views
Usually answered in minutes!
×