High Temperature Alarm (E1) - Hoshizaki REFRIGERATED PREP TABLE WITH RAISED RAIL 73168 Service Manual

1. High Temperature Alarm (E1)

If the cabinet or rail temperature exceeds the setpoint temperature by 18°F (10°C) or
more for more than x hours, "E1" is displayed. The default value of x is "2" (2 hours).
The value of x can be changed under "F3" on the service menu. (0=No delay; 1=1; 2=2;
3=3 hours)
Note:
• After the machine has been turned off and then turned back on, the high
temperature alarm feature is not active until the area temperature reaches the
lower setpoint temperature differential.
• The high temperature alarm feature operates even during defrost.
Reset Options
The alarm will automatically reset once the area temperature reaches the lower setpoint
temperature differential.
Possible Causes (for further details, see "III.B. Service Chart")
• Doors or drawers are opened frequently or are not completely closed.
• Trouble with the compressor or a refrigerant leak.
• Trouble with the cabinet or rail thermistor.
• Liquid line valve closed.
E1 Alarm not Available until
Lower Setpoint is Achieved
E1 Alarm Temperature 18°F
(10°C) above setpoint temp.
Setpoint Temperature and
Upper Setpoint Differential 0°F (0°C)
Power On
Lower Setpoint
Temperature Differential
3.6°F (2°C)
Temperature Display
27
E1 Alarm Timer Reset
E1 Alarm Timer
E1 Alarm
over 2 hours
Timer under
2 hours
E1 Alarm
E1 Alarm
Available
E1
Alarm
Reset
E1
Blinking