28
Horizon 1000R/N Ice Machines
Ice machine disposition
Possible causes
Corrective action
ON
OFF
Legend:
ON or OFF
FLASHING
5. Ice machine is not making ice.
Locked in PURGE.
PO
WE
R
LO
W BIN
AU
GER O
N
REFRIG O
N
PURG
E
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DRAIN CLO
G
HI W
ATER
CPU
LO W
ATER
1. A self-flush occurred but could
not drain evaporator due to a
failed drain solenoid valve.
2. A self-flush occurred but could
not drain evaporator due to water
reservoir or ice machine not
being level.
1. Replace drain solenoid valve.
2. Level ice machine. Check water
reservoir to make sure it is not
tilted towards the compressor.
6. The CPU is not flashing.
.
PO
WE
R
LO
W BIN
AU
GER O
N
REFRIG O
N
PURG
E
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DRAIN CLO
G
HI W
ATER
CPU
LO W
ATER
1. Processor has been damaged.
1. Replace PC board.
7. Ice machine is making ice.
Excessive water in bin or
coming into bin from transport
tube.
.
PO
WE
R
LO
W BIN
AU
GER O
N
REFRIG O
N
PURG
E
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DRAIN CLO
G
HI W
ATER
CPU
LO W
ATER
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. Clean or replace water probe
assembly. Check wiring connections.
2. Clean or replace vent tubes.
3. Replace water feed solenoid valve.
8. Ice machine is not making ice.
Lo water.
.
PO
WE
R
LO
W BIN
AU
GER O
N
REFRIG O
N
PURG
E
TIME DELA
Y
CLEANING
SER
VICE
HI AMPS
HI PRESS
DRAIN CLO
G
HI W
ATER
CPU
LO W
ATER
1. Water supply is turned off.
2. Low water pressure.
3. Defective water feed solenoid
valve. Stuck in closed position.
4. No water feed output from
PC board.
1. Turn water supply on. 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.
