This is a listing of all current truck, trailer, CR, DAS and DSR alarm codes. On multi-temp units, the zone will be identified. Please record all alarms that occur to assist technician in resolving issue. Alarm codes with parenthesis (XX) may exist with alarm code 84 and may clear automatically. Thermo King Alarm Codes Troubleshooting A guide for troubleshooting alarm codes or fault codes on trailer and truck mounted Thermo King refrigeration units. This guide lists all the Thermo King alarm codes that could go off on a Thermo King unit. These alarm codes will appear on straight truck refrigeration units and trailer refrigeration units.
Thermo King Straight Truck Units – Most Popular
# 1 MD 200
# 2 TS 300
# 3 TS 500
# 4 RD II- SR
Thermo King Trailer Units – Most Popular
# 1 SB-III SR
# 2 SB- 210/210+
# 3 SB-310/310+
#4 SB 400
# 5 Spectrum
Thermo King Alarm Codes Defined:
See Full List On Thermokingmichigan.com
- 00 NO ALARMS EXIST
- 01 MICROPROCESSOR POWER UP RESET
- 02 CHECK EVAPORATOR COIL SENSOR
- 03 CHECK RETURN AIR SENSOR
- 04 CHECK DISCHARGE AIR SENSOR
- 05 CHECK AMIBENT TEMP SENSOR
- 06 CHECK COOLANT TEMP SENSOR
- 07 CHECK ENGINE RPM SENSOR
- 08 UNIT RUNNING IN COIL SENSOR
- 09 HIGH EVAPORATOR TEMPERATURE
- 10 HIGH DISCHARGE PRESSURE (OR TEMP)
- 11 UNIT CONTROLLING ON ALTERNATE SENSOR
- 12 SENSOR OR DIGTAL INPUT SHUTDOWN
- 13 SENSOR CHECK
- 14 DEFROSAT TERMINATE BY TIME
- 15 CHECK GLOW PLUGS OR INTAKE AIR HEATER
- 16 MANUAL START NOT COMPLETED
- 17 ENGINE FAILED TO CRANK
- 18 HIGH ENGINE COOLANT TEMPERATURE
- 19 LOW ENGINE OIL PRESSURE
- 20 ENGINE ( VAPOR MOTOR CR) FAILED TO START
- 21 COOLING CYCLE CHECK
- 22 HEATING CYCLE FAULT
- 23 COOLING CYCLE FAULT
- 24 HEATING CYCLE FAULT
- 25 ALTERNATOR CHECK
- 26 CHECK REFRIGERATION CAPACITY
- 27 VAPOR MOTOR RPM HIGH (CR)
- 28 PRETIP OR SELF CHECK ABORT
- 29 DEFROST DAMPER CIRCUIT CHECK
- 31 CHECK OIL PRESSURE SWITCH
- 32 REFRIGERATION CAPACITY LOW
- 33 CHECK ENGINE RPM
- 34 CHECK MODULATION CIRCUIT
- 35 CHECK RUN RELAY CIRCUIT
- 36 ELECTRIC MOTOR FAILED TO RUN
- 37 CHECK ENGINE COOLANT LEVEL
- 38 ELECTRIC PHASE REVERSED
- 39 CHECK WATER VALVE CIRCUIT
- 40 CHECK HIGH SPEED CIRCUIT
- 41 CHECK ENGINE COOLANT TEMP
- 42 UNIT FORCED TO LOW SPEED
- 43 UNIT FORCED TO LOW SPEED MODULATION
- 44 CHECK FUEL SYATEM
- 45 CHECK HOT GAS OR HOT GAS BYPASS CIRCUIT
- 46 CHECK AIR FLOW
- 47 REMOTE SENSOR SHUTDOWN
- 48 CHECK BELTS OR CLUTCH
- 49 RESERVED FOR CR
- 50 RESET CLOCK
- 51 CHECK SHUTDOWN CIRCUIT
- 52 CHECK HEAT CIRCUIT
- 53 CHECK ECONOMIZER VALVE CIRCUIT
- 54 TEST MODE TIMEOUT
- 55 CHECK ENGINE SPEEDS
- 56 CHECK EVAPORTOR FAN LOW SPEED
- 57 CHECK EVAPORTOR FAN HIGH SPEED
- 58 CHECK CONDENSER FAN LOW SPEED
- 59 CHECK CONDENSER FAN HIGH SPEED
- 60 CHECK BOOST CIRCUIT
- 61 LOW BATTERY VOLTAGE
- 62 AMMETER OUT CALIBRATION
- 63 ENGINE OR VAPOR MOTOR STOPPED
- 64 PRETRIP REMINDER
- 65 ABNORMOL TEMPERATURE DIFFERENTIAL
- 66 LOW ENGINE OIL LEVEL
- 67 CHECK LIQUID LINE SOLENOID CIRCUIT
- 68 INTERNAL CONTROLLER FAULT CODE
- 69 CHECK REMAGNETIZATION CIRCUIT
- 70 HOURMETER FAILURE
- 71 HOURMETER 4 EXCEEDS SET TIME LIMIT
- 72 HOURMETER EXCEEEDS SET TIME LIMIT
- 73 HOURMETER 6 EXCEEDS SET TIME LIMIT
- 74 CONTROLLEER RESET TO DEFAULTS
- 75 CONTROLLER RAM FAILURE
- 76 CONTROLLER EPROM FAILURE
- 77 CONTROLLER EPROM CHECKSUM FALIURE
- 78 DATA LOG EPROM FAILURE
- 79 INTERNAL DATA LOGGER OVERFLOW
- 80 CHECK COMPRESSOR TEMP SENSOR
- 81 HIGH COMPRESSOR TEMP
- 82 HIGH COMPRESSOR TEMP SHUTDOWN
- 83 LOW ENGINE COOLANT TEMP
- 84 RESTART NULL
- 85 FORCED UNIT OPERATION
- 86 CHECK DISCHARGE PRESSURE SENSOR
- 87 CHECK SUCTION PRESSURE SENSOR
- 88 RESERVED FOR CR
- 89 CHECK ELECTRONIC THROTTLING VALVE CIRCUIT
- 90 ELECTRIC OVERLOAD
- 91 CHECK ELECTRIC READY INPUT
- 92 SENSOR GRADES NOT SET
- 93 LOW COMPRESSOR SUCTION PRESSURE
- 94 CHECK LOADER # 1 CIRCUIT
- 95 CHECK LOADER # 2 CIRCUIT
- 96 LOW FUEL LEVEL
- 97 FAILED REMOTE RETURN AIR SENSOR
- 98 CHECK FUEL LEVEL SENSOR
- 99 HIGH COMPRESSOR PRESSURE RATIO
- 100 HEATER FAN FAILURE
- 101 CONTROLLING ON EVAP COIL OUTLET TEMP
- 102 LOW EVAPORATOR COIL TEMPERATURE
- 103 LOW HEATER FUEL LEVEL
- 104 CHECK REMOTE FAN SPEED
- 105 CHECK RECEIVER TANK PRESS SOL CIRCUIT
- 106 CHECK PURGE VALVE CIRCUIT
- 107 CHECK CONDEENSOR INLET SOL CIRCUIT
- 108 DOOR OPEN TIMEOUT
- 109 CHECK HIGH DISCHARGE PRESSURE SENSOR
- 110 CHECK SUCTION LINE SOL CIRCUIT
- 111 UNIT NOT CONFIGURED CORRECTLY
- 112 CHECK REMOTE FANS
- 113 CHECK ELERCTRIC HEAT CIRCUIT
- 114 MULTIPLE ALARMS- CAN NOT RUN
- 115 CHECK HIGH PRESSURE CUT OUT SWITCH
- 116 CHECK HIGH PRESSURE CUT IN SWITCH
- 117 AUTO SWITCH FROM DIESEL TO ELECTRIC
- 118 AUTO SWITCH FROM ELECTRIC TO DIESEL
- 119 RESERVED FOR CR
- 120 CHECK ALTERNATOR EXCITE CIRCUIT
- 121 CHECK PMW LIQUID INJECTION CIRCUIT
- 122 CHECK DIESEL/ELECTRIC CIRCUIT
- 123 CHECK EVAP COIL INLET TEMP SENSOR
- 124 CHECK EVAP COIL OUTLET TEMP SENSOR
- 125 CHECK TANK LEVEL SENSOR
- 126 CHECK BACK PRESSURE REGULATOR
- 127 SETPOINT NOT ENTERED
- 128 ENGINE RUN TIME MAINT REMINDER # 1
- 129 ENGINE RUN TIME MAINT REMINDER # 2
- 130 ENGINE RUN TIME MAINT REMINDER # 1
- 131 ENGINE RUN TIME MAINT REMINDER # 2
- 132 TOTAL UNIT RUN TIME MAINT REMINDER # 1
- 133 TOTAL UNIT RUN TIME MAINT REMINDER # 2
- 134 CONTROLLER POWER ON HOURS
- 135 CHECK SPARE DIGITAL INTPUTS
- 136 CHECK SPARE DIGITAL OUTPUTS
- 137 CHECK DAMPER MOTOR HEATER OUTPUT
- 203 CHECK REDUNDANT RETURN AIR SENSOR
- 204 CHECK REDUNDANT DISCHARGE AIR SENSOR
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