Руководство Пользователя для Hoshizaki rf28a
Alarm Signals
Alarm Code Problem
Notes
E1
High Temperature Alarm
Cabinet temperature has exceeded set
temperature by 18°F (10°C) for more than
x minutes. The default value of x is "2" (120
minutes).
temperature by 18°F (10°C) for more than
x minutes. The default value of x is "2" (120
minutes).
When temperature returns to setpoint range,
alarm code "E1" will clear.
If temperature is not back in range, and obvious
corrections do not bring temperature back in
range, call a qualified service technician.
alarm code "E1" will clear.
If temperature is not back in range, and obvious
corrections do not bring temperature back in
range, call a qualified service technician.
E2
Low Temperature Alarm
Cabinet temperature has remained below
setpoint by 9°F (5°C) for more than y minutes.
The default value of y is "1" (60 minutes).
setpoint by 9°F (5°C) for more than y minutes.
The default value of y is "1" (60 minutes).
When temperature returns to setpoint range,
alarm code "E2" will clear.
If temperature is not back in range, and obvious
corrections do not bring temperature back in
range, call a qualified service technician.
alarm code "E2" will clear.
If temperature is not back in range, and obvious
corrections do not bring temperature back in
range, call a qualified service technician.
E3
Defrost Alarm
Defrost has taken longer than 1 hour. Control
board has terminated defrost.
board has terminated defrost.
Call a qualified service technician.
Note that E3 may alternate with "dF" instead of
the temperature.
the temperature.
E4
High Pressure Alarm
Compressor discharge pressure is outside
normal operating range. Pressure switch has
been triggered 5 or more times in 1 hour.
Condenser filter may need cleaning.
Compressor discharge pressure is outside
normal operating range. Pressure switch has
been triggered 5 or more times in 1 hour.
Condenser filter may need cleaning.
Clean filter if necessary. Allow time for pressure
switch to react, then turn power off and back on
again to reset.
If switch trips 5 times in 1 hour, and the above
steps do not clear the alarm code, call a
qualified service technician.
switch to react, then turn power off and back on
again to reset.
If switch trips 5 times in 1 hour, and the above
steps do not clear the alarm code, call a
qualified service technician.
E7
Clogged Filter Alarm
Condenser temperature is outside of normal
operating range. Condenser filter needs
cleaning.
operating range. Condenser filter needs
cleaning.
Clean filter. Allow time for sensor to react, then
turn power off and back on again to reset.
If this alarm occurs frequently, it is
recommended that a qualified service
technician be called.
turn power off and back on again to reset.
If this alarm occurs frequently, it is
recommended that a qualified service
technician be called.
E8
Defrost Thermistor Malfunction Alarm
Defrost thermistor has failed.
Defrost thermistor has failed.
Call a qualified service technician. After
replacing thermistor, alarm will reset.
replacing thermistor, alarm will reset.
E9
Clogged Filter Thermistor Malfunction Alarm
Clogged filter thermistor has failed.
Clogged filter thermistor has failed.
Call a qualified service technician. After
replacing thermistor, alarm will reset.
replacing thermistor, alarm will reset.
EA
EEPROM Write Error Alarm
Control board is defective.
Control board is defective.
Call a qualified service technician. After
replacing the control board, alarm will reset.
replacing the control board, alarm will reset.
ED
EEPROM Verification or Read Error Alarm
Control board is defective.
Control board is defective.
Call a qualified service technician. After
replacing the control board, alarm will reset.
replacing the control board, alarm will reset.
C. Poor Cooling Performance
• Door(s) opened too often.
• Door(s) left open. Close.
• Too packed with food or air inlet/outlet blocked. Allow some space between items/
• Door(s) left open. Close.
• Too packed with food or air inlet/outlet blocked. Allow some space between items/
containers to ensure good air flow.
• Warm or hot foods inside. Take them out until they cool down more.
• Ambient temperature too high. Avoid installation near high heat producing equipment or
• Ambient temperature too high. Avoid installation near high heat producing equipment or
exposure to direct sunlight.
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