Controller Diagnostics - Scotsman HID312AW1 Service Manual

HID312, HID525, HID540
Service Manual

Controller Diagnostics

Code or Light Action
O
F
b
E
C
d
1
2
3
4
Water dispense sensed light
blinking
Water dispense light blinking
Ice dispense sensed light blinking
Ice dispense light blinking
Status light is on
Time to Clean light is on
Water Dispensed Sensed light is
on
Ice Dispensed Sensed light is on
Water Dispense light is on
Ice Dispense light is on
Auger light is on
Compressor light is on
Probable Cause
Unit manually switched off
Freeze mode
Bin sensors sense bin full
Corrupted memory
Clean mode
Test mode
Auger motor rotated auger
backwards.
Auger motor stalled or operating
slowly
No water in reservoir
High pressure cut out open
Container positioned in front of
water dispense sensor for more
than 24 seconds
Container positioned in front of ice
dispense sensor for more than 20
seconds
Unit is in ice making mode
Unit has not been cleaned for at
least 6 months
A container is in front of the sensor
or the water button is pressed
A container is in front of the sensor
or the ice button is pressed
Water solenoid has been activated Normal during water dispensing
Bin drive motor has been activated Normal during ice dispensing
Auger motor is active
Compressor is active
October 2020
Page 26
Suggested Action
If desired, switch unit on.
None, unit is making ice.
Check if bin is full.
Replace controller
Continue clean mode
None, allow unit to finish test
mode.
Replace auger motor. Check water
seal area for leaks, replace seal if
leaking.
Clean ice making system and retry.
If unit shuts off again right after a
reset, magnet rotor on motor shaft
may be loose.
Restore water. If there is water,
is it too pure? Are sensor wires
connected?
Check fan motor on air cooled or
water supply on water cooled.
Normal, controller has a time limit
for dispensing. Remove container.
Normal, may not be making ice if
bin is full
Clean unit
Normal during water dispensing
Normal during ice dispensing
Normal when making ice
Normal when making ice