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2. Low Temperature Alarm (E2)
If the cabinet or rail temperature drops below the setpoint temperature by 9°F (5°C) or
moreformorethanyhours,"E2"isdisplayed.Thedefaultvalueofyis"1"(1hour).The
valueofycanbechangedunder"F4"ontheservicemenu.(0=Nodelay;1=1hour)
Note:
•Thelowtemperaturealarmtimerstartsoncethecabinettemperaturedrops9°F
(5°C) below the setpoint temperature.
•Thelowtemperaturealarmfeatureoperatesevenduringdefrost.
Reset Options
The alarm will automatically reset once the area temperature reaches the upper setpoint
temperature differential.
Possible Causes (forfurtherdetailssee"III.B.ServiceChart")
•Ambienttemperatureislow.
•Troublewiththecabinetthermistor(black).
•Liquidlinevalveopen.
•Evaporatorfansnotoperating.
E2 Alarm
Timer Reset
E2 Alarm Reset
Power On
E2 Alarm Temperature
9°F (5°C) below setpoint temp.
Lower Setpoint Temperature
Differential -3.6°F (2°C)
E2 Alarm
Timer over
1 hour
Temperature Display
E2
Blinking
E2 Alarm Timer
under 1 hour
Setpoint Temperature and
Upper Setpoint Differential 0°F (0°C)
E2 Alarm