Follett Horizon Elite HC Series Operation And Service Manual page 33

Ice machine disposition
Legend:
ON
6 . Ice machine is making ice .
Excessive water in bin or
coming into bin from transport
tube .
7 . Ice machine is not making ice .
Lo water .
8 . Blinking Lo water, power, time
delay .
9. Blinking Lo water, power, time
delay.
ATTENTION!
To prevent circuit breaker overload, wait 5 minutes before
restarting this unit. This allows the compressor to equalize and the
evaporator to thaw.
HC_1810R/N, HC_2110R/N, HM_1810R/N, HM_2110R/N
Possible causes
OFF ON or OFF
1 . Failed water sensors . Processor
assumes there is no water when
there is water .
2 . Blocked reservoir vent .
3 . Defective water feed solenoid
valve . Stuck in open position .
1 . Water supply is insufficient .
2 . Low water pressure .
3 . Defective water feed solenoid
valve . Stuck in closed position .
4 . No water feed output from
PC board .
5 . Plugged screen on inlet side of fill
solenoid .
6 . Plugged check valve .
Machine did not see water
consumption while trying to make ice .
1 . Lack of refrigeration/low refrigerant
charge/leak .
2 . Debris shorting reservoir probes .
Machine did not see water
consumption while trying to make
ice.
1. Lack of refrigeration/low
refrigerant charge/leak.
2. Debris shorting reservoir probes.
Corrective action
FLASHING
1 . Clean or replace water probe
assembly . Check wiring
connections .
2 . Clean or replace vent tubes .
3 . Replace water feed solenoid
valve .
1 . Restore water supply and check
water filters . If evaporator was
completely empty the reset button
may have to be pressed to restart
the ice machine .
2 . Ice machine will eventually start
when water reaches normal lo
level .
3 . Replace water feed solenoid valve .
4 . Replace PC board .
5 . Remove and clean screen .
6 . Remove and clean .
1 . Verify refrigerant pressures,
compressor running, sight glass
clear .
2 . Clean probes and reservoir of
debris .
1. Verify refrigerant pressures,
compressor running, sight glass
clear.
2. Clean probes and reservoir of
debris..
33