Thermo King Truck/Trailer Refrigeration Unit Error Alarm 156: Causes & Fixes
Check Suction/Liquid Heat Exchanger Bypass Valve
Browse published troubleshooting notes by brand, product, and error code.
Check Suction/Liquid Heat Exchanger Bypass Valve
OptiSet Plus Profile Mismatch
Primary Software Failed to Load
Expansion Module Flash Load Failure
Low Suction Pressure Switch Failure
Lost CAN Communications to HMI
Sensor Out of Range Low (DAS and HMI) (Zone)
Sensor Out of Range High (DAS and HMI) (Zone)
DAS Failed Sensor (DAS)
Check Multi-Temp Fan Speed Control Output (Zone)
Auto Switch Electric to Diesel Disabled
Alarm Not Identified
Lost CAN Communications to Expansion Module
Lost Controller ON Feedback Signal
Software Version Mismatch
Auto Switch Diesel to Electric Disabled
Check Thermax Valve
Check Remote Drain Hose Heater Output (Zone)
Check Spare Digital Outputs
Log DAS Real Time Clock Battery Failure (DAS)
Abort Evacuation Mode
Total Unit Run Time Maint Reminder #2
Controller Power On Hours
Check Spare Digital Inputs