Hoshizaki HUF40A, Service Manual

Page: 35 / 64

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2. Alarm Details and Countermeasures
a. High Temperature Alarm (E1)
If the cabinet temperature exceeds the setpoint temperature by 14.4°F (8°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 Settings and Diagnostics 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 cabinet 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 cabinet temperature reaches the lower setpoint
temperature differential.
Possible Causes
• The door is opened frequently or is not completely closed.
• Trouble with the compressor or a gas leak.
• Trouble with the cabinet thermistor (black).