Cause
Condenser Cover not detected.
Solution
Check the magnet and switch.
The below diagram shows the switch in the open position, which would be correct if the Condenser Cover is open.
With the Condenser Door open and the leads attached, the meter will read OL, or no continuity, with the Condenser Door closed you should hear a tone. If you check this at the Main PCB and determine the switch is working properly, replace the Main PCB.
Check the switch at the Main PCB with the connector unplugged. (Above example is from WKHC252) Note: check your individual diagram for your unit.