Thermo King Truck/Trailer Refrigeration Unit Error Alarm 48: Causes & Fixes
Check Belts or Clutch
Error Codes
Browse published troubleshooting notes by brand, product, and error code.
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 49: Causes & Fixes
Check Spare Sensor 1
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 50: Causes & Fixes
Reset Clock
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 45: Causes & Fixes
Check Hot Gas or Hot Gas Bypass Circuit
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 46: Causes & Fixes
Check Air Flow (Zone)
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 47: Causes & Fixes
Remote Sensor Shutdown
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 42: Causes & Fixes
Unit Forced to Low Speed
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 43: Causes & Fixes
Unit Forced to Low Speed Modulation
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 44: Causes & Fixes
Check Fuel System
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 39: Causes & Fixes
Check Water Valve Circuit
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 40: Causes & Fixes
Check High Speed Circuit
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 41: Causes & Fixes
Check Engine Coolant Temp
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 36: Causes & Fixes
Electric Motor Failed to Run
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 37: Causes & Fixes
Check Engine Coolant Level
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 38: Causes & Fixes
Electric Phase Reversed
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 33: Causes & Fixes
Check Engine RPM
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 34: Causes & Fixes
Check Modulation Circuit
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 35: Causes & Fixes
Check Run Relay Circuit
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 30: Causes & Fixes
Defrost Damper Stuck Closed (Zone)
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 31: Causes & Fixes
Check Oil Pressure Switch
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 32: Causes & Fixes
Refrigeration Capacity Low (Zone)
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 27: Causes & Fixes
Vapor Motor RPM High (CR)
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 28: Causes & Fixes
Pretrip or Self Check Abort
Thermo King Truck/Trailer Refrigeration Unit Error Alarm 29: Causes & Fixes
Defrost Damper Circuit Check (Zone)