Error Codes - Hoshizaki FM-170,300AKE(-N) Service Manual

7. ERROR CODES

Interlock Errors
Code Error
Icemaking Water
E0
Leak
Low Ice
E1
Production
E2 Float Switch Error
Gear Motor Error
or Gear Motor
E3
Sensor Circuit
Open
Abnormal High
E4
Side Pressure
Gear Motor Drive
E5
Element Error
Discharge Pipe
E8 Temperature
Error
Water Thermistor
EA
Circuit Open
Condenser
Eb Thermistor Circuit
Open
Evaporator Outlet
EC Thermistor Circuit
Open
EE Gear Motor Error
Abnormal Low
EF
Voltage
Discharge Pipe
EH Thermistor Circuit
Open
Bin Control
EL
Switch Error
Condition
c0 error occurs 2 times in
a row.
Icemaking cycle takes too
long.
With flush water valve
OFF, float switch trips at
both upper and lower float
levels for 2 seconds.
Gear motor is ON with
rotation sensor or current
sensor circuit open.
Gear motor relay is ON
with gear motor protective
circuit detector OFF.
c2 error occurs 5 times in
1 hour of compressor
operation.
Gear motor is OFF on
controller board while
rotation sensor signals
gear motor rotation or
current flows.
Gear motor relay is OFF
with gear motor protective
circuit detector ON.
Discharge pipe
thermostat is OFF.
Water thermistor circuit is
open.
Condenser thermistor
circuit is open.
Evaporator outlet
thermistor circuit is open.
Rotation sensor detects
reversing.
c5 error occurs 5 times.
c3 error occurs 3 times in
24 hours.
Discharge pipe thermistor
circuit is open.
Bin control protective
switch trips.
Operation Reset
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
E4 blinks. N/A
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
EA blinks. N/A
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
EH blinks. N/A
Power supply,
Whole unit
Turn OFF -
stops.
Turn ON
109
Check/Repair
Water leak from water
circuit (reservoir, inlet
hose, outlet hose, hose
joint, mechanical seal,
flush water valve), float
switch
Gas leak, control water
valve not closing, vapor
lock, freeze, float switch
Float switch
Rotation sensor, current
sensor
Gear motor protective
circuit (TPO, overload,
etc.), gear motor relay
Fan motor, cooling water
circuit, refrigeration
circuit, condenser
clogged, water supply,
installation conditions
Miswiring, gear motor
magnet switch or relay
Replace controller board.
Gas leak, compressor
cooling fan failure
Water thermistor
Condenser thermistor
Evaporator outlet
thermistor
Gear motor locked,
hunting or overloaded,
supply voltage, high
ambient temperature
Supply voltage
Discharge pipe thermistor
Bin control switch