Hoshizaki 73168 service manual Low Temperature Alarm E2

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.

Power On

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.

E2 Alarm Timer under 1 hour

E2 Alarm

Timer Reset

Temperature Display

E2 Alarm Reset

E2 Alarm

E2 Alarm Timer over 1 hour

E2

Blinking

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