Setpoint changes
Press or to adjust the setpoint temperature. The
current temperature will blink once, before it increases or
decreases depending on which arrow key is pressed
Manual Defrost
Press the key for 3 seconds to attempt a
manual defrost
Alarm Codes
Above defrost temperature
Evaporator temperature is too high for defrost
Manual setpoint changes are disabled
Problem between controller & module communication.
Buzzer ON until the cargo area door is closed
Compressor off until high-side pressure decreases
Compressor off until low-side pressure increases
Electric stand by connected
Wall plug connected while ignition is ON
High pressure transducer fault
High pressure transducer signal lost
Low pressure transducer fault
Low Pressure transducer signal lost
Return temperature sensor open
System will continue to operate with temperature control
following back-up open loop
Return temperature sensor short circuit
Evaporator coil temperature sensor open
Defrost control will only allow manual defrosts (user
requested) and will continue to perform defrosts based on
time (MaxRef.Tm)
Evaporator coil temperature sensor short
circuit
