ECONAR GV590-1-T000: Since this was installed in 2003 the GSHP has -occasionally- tripped the FAULT indicator on the thermostat, but when I open it and check the circuit board there is no fault light. The FAN is running but NOT the compressor. By occasionally I mean 'maybe' once a year, 'maybe' two or three times. I have to TRIP the AC CB off for the unit and turn it back on in order for it to start working again. I REPLACED the circuit board a long time ago but it still -occasionally- gets a FAULT. Right now it has quit 4 times in the last week, so I am getting a little annoyed. Besides replacing the circuit board I have removed / replaced the thermostat. Any suggestions would be appreciated, -OR- if someone has a wiring diagram for the circuit board I would like a copy. I am knowledgeable in electronics and might be able to figure a way to diagnose this with a diagram.
