Sinclair SCV-1400EB, Service Manual

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5.10 P0 Troubleshooting
Digital display output
Description

Discharge pipe high pressure or discharge temperature switch protection. When the discharge pressure rises above 4.2MPa
or discharge temperature rises above 115°C, the system displays P0 protection and all units stop running. When the
discharge pressure falls below 3.2MPa or discharge temperature fall below 90°C, P0 is removed and normal operation
resumes. When P0 error occurs 3 times in 60 minutes, a manual system restart is required before the system can resume
operation.

Error code is displayed on main PCB and user interface.
Possible causes

High pressure switch or discharge temperature switch not connected properly or has malfunctioned.
 Excess refrigerant.

System contains air or nitrogen.

High pressure side blockage.

Poor condenser heat exchange.

Main PCB damaged.