Hoshizaki KM-40C-HC Service Manual page 30

Error Codes
Code Item
LED thermistor
E31
error
E40 Setting error
E41 EEPROM error
High pressure
E46
error
E60 Freeze error
E61 Harvest error
High temperature
E64
error 1
E65 Fan lock
E66 Pump lock
Condenser
E67
thermistor error
Water regulator
error (water-
E69
cooled model
only)
E71 Low water
Evaporator
E73
thermistor error
Control board
E79
thermistor error
Condenser
E81 thermistor high
temperature error
Icemaking water
E82 thermistor (not
provided) error
Low/falling water
E90
error
Low temperature
E91
error
Fully automated
E98
cleaning error
Description
LED thermistor circuit is open.
Control board memory or setting error
is detected.
IC storing model code setting data is
defective.
Pressure switch turns on.
Freeze backup timer runs two times
in a row.
Harvest backup timer runs for 20
minutes two times in a row.
Evaporator thermistor reads 53°C or
more for 2 seconds.
Fan motor RPM is kept at 0 for 30
seconds.
In freeze cycle, pump motor RPM is
kept at 0 for 30 seconds under control
voltage.
Condenser thermistor circuit is open
or shorted for 2 seconds.
Condenser thermistor reads set point
or higher temperature at the end of
freeze cycle.
With Setting 69 ON, float switch fails
to close at lower float level four times
in a row when checked every minute
in fill cycle.
Evaporator thermistor circuit is open
or shorted for 2 seconds.
Control board thermistor circuit is
open or shorted for 2 seconds.
Condenser thermistor reads higher
than set point temperature for 2
seconds.
Icemaking water thermistor circuit is
open or shorted for 2 seconds.
Freeze cycle ends within 15 minutes
two times in a row due to low water,
falling water, multiple icemaking or
water leaks.
Evaporator thermistor reads -30°C or
less for 10 seconds due to low water
or multiple icemaking.
Rinse process never ends in fully
automated chemical cleaning.
Operation
Shut down Press reset button
Shut down
Shut down
Halt
Shut down Press reset button
Shut down Press reset button
Shut down Press reset button
Halt
Halt
Shut down Replace thermistor
Halt
Shut down Press reset button
Shut down Replace thermistor
Shut down Replace thermistor
Halt
Shut down Replace thermistor
Error log
Halt
Shut down Press reset button
26
Reset
Replace control
board
Replace control
board
Pressure switch
turns off
Automatically reset
in 10 minutes (fill
cycle begins)
Automatically reset
in 10 minutes (fill
cycle begins)
Automatically reset
in 10 minutes (fill
cycle begins)
Automatically reset
in 5 minutes or at
50°C or less
Automatically reset
in 10 minutes (fill
cycle begins)