17
G. Alarm Codes
WARNING
1. This unit should be disassembled or repaired only by a qualified service
technician to reduce the risk of injury, electric shock, or fire.
2. In case of insufficient refrigeration performance, move food into another unit
to prevent its deterioration.
If an error occurs, the alarm code and cabinet temperature are displayed in 1-second
intervals. When an error occurs, check the alarm code and follow the instructions below.
Alarm Code Problem
Reset Options
E1
High Temperature A
larm (cabinet only)
Cabinet temperature has exceeded
the setpoint temperature by 18°F
(10°C) for more than x hours. The
default value of x is "2".
When the temperature returns to the setpoint range,
alarm code "E1" clears.
If the temperature does not return to the proper range,
and obvious corrections such as closing doors/drawers
and cleaning the air filter and/or condenser do not
bring the temperature back in range, call a qualified
service technician.
E2
Low Temperature Alarm (cabinet only)
Cabinet temperature has remained
below the setpoint by 9°F (5°C) for
more than y hours. The default value
of y is "1".
When the temperature returns to the setpoint range,
alarm code "E2" clears.
If the temperature does not return to the proper range,
and obvious corrections do not bring the temperature
back in range, call a qualified service technician.
E3
Defrost Alarm
(cabinet only)
Cabinet defrost has taken longer than
1 hour 40 minutes. The control board
has terminated defrost.
Call a qualified service technician.
Note that E3 may alternate with "dF" instead of the
temperature.
E7
Clogged Filter Alarm
(high condenser temperature)
Condenser temperature is outside
of normal operating range. The
condenser air filter and/or condenser
require cleaning.
Clean the air filter and/or condenser. Allow time for
the sensor to reset, then move the power switch to the
"OFF" position and then back to "ON" again to clear
the alarm.
If this alarm occurs frequently, call a qualified service
technician. Failure to take action when this alarm
activates could result in damage to the compressor.
E8
Defrost Temperature Sensor
Malfunction Alarm (defrost thermistor)
Defrost temperature sensor has failed.
Call a qualified service technician.
E9
Clogged Filter Sensor Malfunction
Alarm
(condenser thermistor)
Clogged filter sensor has failed.
Call a qualified service technician.
EA
EEPROM Write Alarm
Control board has failed.
Call a qualified service technician.
ED
EEPROM Verification or Read Alarm
Control board has failed.
Call a qualified service technician.
