Carrier WSHP...460v 3 ph
Model # 50RVC036LCC60130
Issue - Upon a call for cooling, compressor comes on. About 10 - 20 secs later it cuts off.
LED flash code was slow blink "Fault Retry"
After 3 tries, it goes into fast flash..LOCKOUT
Water flow and temp was good.
I verified voltage, supply and control..OK
Pressures were 70/250..all corresponding to indoor temp and water temps.
I jumped out every safety in the unit one by one...same result.
I narrowed it down to the CXM board must be bad.
I have a new one installing it now.
But before i bring it all the way back to the pulpit and install it again, I would like to verify and test the unit.
Is there anything else I should look into before I go with the CXM board being the reason?