High Compressor Suction Pressure (Scroll Only)

Excessively high suction pressure detected in Scroll-type compressors.

Possible causes

Miscalibrated or stuck open ETV valve
Excessive heat load on evaporator
Internal Scroll compressor failure
Out of calibration suction pressure sensor

Recommended actions

Verify Electronic Throttling Valve (ETV) operation
Compare gauge pressures vs sensor readings
Inspect evaporator coil condition
Perform compressor pump-down test

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Other Thermo King codes

00No Alarms Exist 02Check Evaporator Coil Sensor (Zone)03Check (Control) Return Air Sensor (Zone)04Check (Control) Discharge Air Sensor (Zone)05Check Ambient Temp Sensor 06Check Coolant Temp Sensor

View all Thermo King codes

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