Sinclair SCV-1400EB, Service Manual

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5.27 F2 Troubleshooting
Digital display output
Description

Insufficient protection of exhaust superheat.

All units stop running.
 Error code is only displayed on main PCB and user interface.
Possible causes

Discharge pipe temperature sensor connected properly or has malfunctioned.

For SCV-750EB and SCV-1400EB, discharge pipe temperature sensor at the top of the compressor falls or is not insulated.
For SCV-900EB and SCV-1800EB, electronic expansion valve coil not connected properly or has malfunctioned.

Damaged main PCB.