Hoshizaki 73168 Benutzerhandbuch

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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 Timer 
over 2 hours

E1 Alarm Timer Reset

E1 Alarm 
Timer under 
2 hours

Power On

E1 Alarm Temperature 18°F 
(10°C) above setpoint temp.

Setpoint Temperature and 
Upper Setpoint Differential 0°F (0°C)

Lower Setpoint
Temperature Differential
3.6°F (2°C) 

E1 
Alarm 
Reset

Temperature Display

E1 
Blinking

E1 Alarm 
Available

E1 Alarm

E1 Alarm not Available until 
Lower Setpoint is Achieved