Koolaire KD0172A, Technician'S Handbook

Page: 55 / 132

Part Number STH047 5/16 55
DIAGNOSING ICE THICKNESS CONTROL CIRCUITRY
Ice Machine Does Not Cycle Into Harvest when Water
Contacts the Ice Thickness Control Probe
Step 1
Bypass the freeze time lock-in feature by
moving the ON/OFF/WASH switch to OFF and back to ON.
Wait until the water starts to flow over the evaporator.
Step 2
Clip the jumper wire to the ice thickness probe
and any cabinet ground.
EVAPORATOR
ICE THICKNESS
PROBE
PROBE
CONNECTION
GROUND
JUMPER WIRE
BIN SWITCH
LIGHT
(GREEN)
HARVEST LIGHT
(RED)
SV1592i
Step 2 Jumper wire connected from probe to ground
Monitoring Harvest Light Correction
The harvest light comes on,
and 6-10 seconds later, ice
machine cycles from freeze to
harvest. The ice thickness control
circuitry is functioning
properly. Do not change any
parts.
The harvest light comes on but
the ice machine stays in the
freeze sequence. The ice control circuitry is
functioning properly. The ice
machine is in a six minute
freeze time lock-in. Verify
Step 1 of this procedure was
followed correctly.
The harvest light does not
come on. Proceed to Step 3.