Honeywell Thermostat - Constant Flashing WAIT

Honeywell Thermostat: All Digital Models

Re: Constant Flashing WAIT 

The thermostat appears to never come out of the WAIT timer.

• The flashing WAIT displayed on a Honeywell digital thermostat indicates that the thermostat is in an Anti-Short-Cycle Delay (ASCD).

CHECKOUT:

1. Check For Short

• Disconnect the low voltage wires connected to "Y" and "G" at the thermostat subbase or EIM.
• Restart a call for cooling/heating from the thermostat and see if the WAIT timer expires properly.
  • Responds Correctly = Low Voltage Short on "Y" or "G".
  • Constant Flashing WAIT = Bad Thermostat