Alarm Code Descriptions - Thermo King V-520 Series Operator's Manual

Alarm Code Descriptions

Table 1. Color Code Definitions
OK TO RUN
Alarm
Manual Start
bAt
Auto Start
HP
LP
PSE
dr1, dr2
tCO
SOF
P1E
P2E
TK 55032-18-OP-EN
CHECK AS SPECIFIED
Description
Low Battery Voltage - Check vehicle battery.
High Pressure Alarm - The system has detected excessively high
discharge pressure.
If the problem persists when the unit is restarted, contact your Thermo
King Dealer.
Low Pressure Alarm - The system has detected excessively low
suction pressure.
If the problem persists when the unit is restarted, contact your Thermo
King Dealer.
High Pressure Sensor Failure - The high pressure sensor has
become faulty or disconnected.
Contact your Thermo King Dealer.
Cargo Doors Are Open (Units with door switch option only) -
Check if the Doors are open. if not, then the door switches are faulty, or
improper door switch configuration.
Contact your Thermo King Dealer.
Control Module Overheating
If the problem persists when the unit is restarted, contact your Thermo
King Dealer.
Software Failure
Contact your Thermo King Dealer.
Faulty Cargo Box Return Air Temperature Sensor - Faulty or
disconnected return air temperature sensor.
Contact your Thermo King Dealer.
Remote Cargo Box Return Air Temperature Reading Error (open
circuit or short-circuit)
Contact your Thermo King Dealer.
O O p p e e r r a a t t i i n n g g I I n n s s t t r r u u c c t t i i o o n n s s
TAKE IMMEDIATE ACTION
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