Low Temperature Alarm (E2) - Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 Service Manual

2. Low Temperature Alarm (E2)

If the cabinet or rail temperature drops below the setpoint temperature by 9°F (5°C) or
more for more than y hours, "E2" is displayed. The default value of y is "1" (1 hour). The
value of y can be changed under "F4" on the service menu. (0=No delay; 1=1 hour)
Note:
• The low temperature alarm timer starts once the cabinet temperature drops 9°F
(5°C) below the setpoint temperature.
• The low temperature alarm feature operates even during defrost.
Reset Options
The alarm will automatically reset once the area temperature reaches the upper setpoint
temperature differential.
Possible Causes (for further details see "III.B. Service Chart")
• Ambient temperature is low.
• Trouble with the cabinet thermistor (black).
• Liquid line valve open.
• Evaporator fans not operating.
Setpoint Temperature and
Upper Setpoint Differential 0°F (0°C)
Lower Setpoint Temperature
Differential -3.6°F (2°C)
E2 Alarm Temperature
9°F (5°C) below setpoint temp.
Power On
E2 Alarm Timer
under 1 hour
E2 Alarm
Timer Reset
Temperature Display
E2 Alarm
E2 Alarm
Timer over
1 hour
E2
Blinking
28
E2 Alarm Reset