Geothermal had 155 occurrences of FP1 fault Last lockout was FP1 With aurora aid tool, monitored fp1 During start up, it went down to -11 and came back up in a short enough period of time to not trigger the fault Checked wiring of fp1, no issues found Used temperature clamp on TXV outlet to compare to fp1 numbers, fp1 was fluctuating a lot while the actual temperature of the line remained steady. Also found high pressure switch Bypassed Verified it is stuck open We will send a quote to replace fp1 sensor and install a service port tee with a high pressure switch
