26
Icemaker troubleshooting chart
Flashing water LED at any time indicates that water signal to board had been lost for more than one second.
Ten-second delay: There is a 10 second delay in reaction to loss of water (WTR) or bin (B-E) signals. If signals are not lost for
more than 10 seconds, no reaction will occur.
Indicators/possible
cause
1. No power to unit.
2. Open bin level control.
3. Water OK LED (WTR) not on.
4. 20M or 2ND LED is on indicating
that fi rst or second torque error has
occurred.
5. Gear motor locked up (immediate
torque error indicated by LEDs when
board is reset).
6. Open coil on gearmotor start relay
causing an immediate torque error.
1. Condenser coil plugged causing open
overload or high pressure cut-out.
2. Defective starting capacitor.
3. Defective starting relay.
4. Open motor winding.
5. No power output from compressor
output terminal on control board.
1. Float reservoir running dry, sensing
probe signalling for system to shut
down.
1. Dirty condenser coil.
2. Restricted air fl ow to condenser coil.
3. Mineral coated evaporator.
4. Improper exhaust air provisions.
5. Faulty expansion valve.
6. Low refrigerant charge.
7.
Superheat
incorrect.
8.
Inefficient
compressor.
1. O ring seal broken.
Corrective action
1. Check that unit is plugged in, circuit
breakers are on.
2. Adjust or replace ice level control.
3. Check reservoir for water, restore water
to unit.
4. See #6 below.
5. Repair or replace gearmotor.
6. Replace gearmotor start relay.
1. Clean condenser coil and replace
overload if necessary.
2. Replace start capacitor.
3. Replace relay.
4. Ohm out windings and replace
compressor if necessary.
5. Check terminal connection and replace
control board if necessary.
1. Check water supply to fl oat and fl oat
operation. PC board will have fl ashing
WTR LED.
1. Clean
condenser.
2. Remove obstruction.
3. Clean evaporator.
4. Provide proper exhaust air provisions per
Follett installation manual.
5. Replace expansion valve.
6. Check for leaks; repair, evacuate, and
weigh in correct charge.
7. Check that TEV sensing bulb is securely
clamped in place and not damaged;
check that insulated bulb cover is in
place.
8. Replace compressor.
1. Replace O ring.
Problem
1. Icemaker
will
not
run.
System status:
compressor,
gearmotor,
and fan motor
inoperative.
2. Compressor will
not run.
System
status:
gearmotor and
fan motor run.
3. Unit cycles
intermittently.
System
status:
compressor,
gearmotor, and
fan motor cycle.
4. Low ice
production.
Poor quality ice.
5. Water leaks
from bottom of
evaporator.
