Good day everyone,
I have a carrier 30gx unit that is showing Oil Pressure Alarm. I have changed the oil transducer, check the oil solenoid, change the compressor board, yet the alarm remains.
I observed that the pressure reading for the oil pressure and economizer pressure from the interface display are ZERO (0).
Even the the connection cable of the transducers are removed, the interface board still reads zero instead of NEGATIVE VALUE like -48
Can somebody give advice? Thanks