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Hi, I'm Brian. I'm here to answer your HVAC question to your complete satisfaction! Are you receiving my chat messages today?
Ah great. Chat hasn't been very reliable lately. The defrost control board on your unit can lock the compressor out. I have never run into a coil sensor that was failed. It would seem that the board wouldn't lock out during cooling for that fault but it appears it does.
Is your indoor fan running ok?
yes - fan at air handler has no discernible issues
it would appear that chat is acting up. I am going to switch to question/answer mode to make sure we receive each others messages.
I've had to replace this defrost control board before (about 2 years ago), similar symptoms although the code at that time was for (I think) High Pressure lockout (maybe it was low press lockout, can't remember)
ok - I don't have 10k ohm right now - what wattage should I get? this is the low voltage side right?
it's the sensor - I'll replace that tomorrow when I can pick up a new one. Any issue leaving the resistor in place overnight?
Excellent - Thanks for everything. My wife is hot... but now the A/C is working.