Service Manual

N0422, F0522, N0622, F0822, N0922, F1222, N1322, F1522
Air, Water or Remote Service Manual
December 2014
Page 40
Service Diagnosis - Air Cooled
Symptom Probable Cause Possible Correction
No ice No power Check that ice machine has
power. If power light is out, check
transformer.
Code 3: No water Restore water, check lters, water
level and sensor
Status light is off Push and release ON switch
Code 1: No ice sensed Check for ice ow down chute. if
very slow or no ice being made,
check for refrig. system failure
Check auger motor for power, if no
power, check controller component
indicator light. If there is power to
the motor, check motor windings
Code 2: Auger motor draws too
many amps, controller shut unit off.
Check for damage to gear reducer
or auger bearings.
Check for restriction between
reservoir and evaporator
Bin Eyes Blocked light is On Ice is in the chute.
No ice in the chute. Check position
of sensors, check sensors for scale
build up
Code 4: Refrigeration system over
or under pressure
Check for proper operation of the
fan and motor; check for proper
ow of water into evaporator;
check for proper refrigerant charge
Code 4: Chute thermostat opened Unit overlled chute, check photo
eye system
Everything is in operation, but no
refrigeration effect
Check compressor
Check TXV superheat
Check refrigerant charge
Optional bin thermostat is open Check thermostat or jumper wire
on blue wires to #5 & #6
Optional ultrasonic system senses
false bin full
Check sensor for proper
installation and operation
Low ice making capacity Scale build up Remove scale from evaporator and
water system
Air lter dirty Clean air lter
Condenser ns dirty Clean condenser
Restricted water to evaporator Check for air bubble in hose,
change reservoir if found
Expansion valve superheat
incorrect
Check superheat