P8-0 Carrier Controller Pre-trip Test Codes

P8 Tests - Perishable Mode Tests: Pre-trip tests P7-0 and P7-1 must have passed or have been skipped for these tests to execute.

P8-0 Perishable Mode Test
If the control temperature is below 15.6 C., the setpoint is changed to 15.6 C.,  and a 180 Minute timer is started. The control will then be placed in the equivalent  of normal heating. If the control temperature is above 15.6 C. at the start of  the test, then the test proceeds immediately to test 8-1. While in test 8-0 the right  display will show the value of the control temperature.”  The test fails if the 180 Minute timer expires before the control temperature  reaches setpoint - 0.3 C. If the test fails, it will not auto-repeat. There is no pass  display for this test. Once the control temperature reaches setpoint, the test proceeds  to test 8-1.