Sinclair SCV-750EB Service Manual page 137

5.32 P2 troubleshooting (for SCV-900EB and SCV-1800EB only)
Digital display output
Description
P2 indicates total cold outlet temperature too high.

All units stop running.

Error code is only displayed on main PCB and user interface.

Possible causes
Temperature sensor damaged

Main control board damaged

Procedure
Total cold outlet temperature sensor
Replace main control board
Note:
1. Total cold outlet temperature sensor connection port is CN31 on the main PCB (labeled 31 in Part 4, 2.2.1 Main PCB component). Measure sensor
resistance. If the resistance is too low, the sensor has short-circuited. If the resistance is not consistent with the sensor's resistance characteristics table,
the sensor has failed. Refer to Part 4, 6.1 "Temperature Sensor Resistance Characteristics".
P2
1
damaged
No
Replace total cold outlet temperature
Yes
sensor
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