ATC M910165 Specifications

M910165 Operator Instructions Sheet (Manual PN: M960146)
Turning the System ON/OFF
Power On: Press the button once to turn on the controller
and begin temperature control
Power Off: Press the button once to turn off temperature
control Note: the installer may bypass the power off feature
System Modes
Changing Temperature Display Unit
1. Hold the and keys simultaneously for 3
seconds to access the main menu
2. Use to scroll down to the “Temp Unit” option.
3. Use the and keys to scroll through °F or °C.
4. Press key to verify the temperature unit
5. To return to the main menu screen press . Exit the
main menu by pressing again or by waiting 30
seconds
Cooling Indicator
Defrost Indicator
Heating Indicator
Refer to manual for all defrost symbols

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
Code
Description
Action
ADT
Above defrost temperature
Evaporator temperature is too high for defrost
BLK
Setpoint Changes Blocked
Manual setpoint changes are disabled
CF
Communication failure
Problem between controller & module communication.
D
Door open
Buzzer ON until the cargo area door is closed
HPF
High pressure failure
Compressor off until high-side pressure decreases
LPF
Low pressure failure
Compressor off until low-side pressure increases
SBY
Electric stand by connected
Wall plug connected while ignition is ON
HTF
High pressure transducer fault
High pressure transducer signal lost
LTF
Low pressure transducer fault
Low Pressure transducer signal lost
RTO
Return temperature sensor open
System will continue to operate with temperature control
following back-up open loop
RTS
Return temperature sensor short circuit
EVO
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)
EVS
Evaporator coil temperature sensor short
circuit