P10-1 Carrier Controller Pre-trip Test Codes

P10-1 Frozen Mode Pulldown Test

Control temperature must be at least 7.2 C (45 F) The setpoint is changed to -17.8 C. The system will then attempt to pull down the control temperature to setpoint using normal frozen mode cooling. During this test, the control temperature will be shown on the right display. The test passes if the control temperature reaches setpoint minus 0.3 C before the 180 minute timer expires. Otherwise, the test fails. Upon failure and when initiated by an automatic Pre-trip sequence, P10-1 will auto-repeat once by starting P10-0 over again.