Kaisai KMK-60RY1, Service Manual

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M thermal Split
76 202004
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4.17 P3 Troubleshooting
Digital display output 4.17.1
Description 4.17.2

Compressor current protection.

When the compressor current rises above the protection value (6kW models 18A, 8/10kW model 19A,
12/14/16kW single phase model 30A, 12/14/16kW three phase model 14A,), the system displays P3 protection and
Split stops running. When the current returns to the normal range, P3 is removed and normal operation resumes.

Error code is displayed on refrigerant system main PCB and user interface.
Possible causes 4.17.3

Poor condenser heat exchange.

High pressure side blockage.
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Inverter module damaged.

Compressor damaged.

Outdoor unit main PCB damaged.
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