Check PMW Liquid Injection Circuit

Failure in the Pulse Width Modulation (PMW) liquid injection circuit, crucial for compressor cooling.

Possible causes

Defective injection solenoid coil
Obstruction in the injection line
Failure in the discharge temperature sensor
Problem with the controller output driver

Recommended actions

Test PMW solenoid resistance
Verify solenoid opens when discharge temperature rises
Check discharge sensor (Code 86)
Clean liquid line filters

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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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