P5-8 Carrier Controller Pre-trip Test Codes

P5 Tests - Air Stream Sensor Tests: Tests the validity of the Air Stream Sensors.

P5-8 Primary Evaporator Pressure Transducer Test
This is a Pass/Fail test of the Primary Evaporator Pressure Transducer. Test passes if suction pressure transducer (SPT) is within +/- 0 psi of saturation pressure at current evaporator temperature. Also passes if SPT is within +/- 1 psi of discharge pressure 6 hours after a power interruption. Test P5-7 must pass before this test is run.