Troubleshooting Chart Icemaker not Operating

TROUBLESHOOTING CHART – ICEMAKER NOT OPERATING

NO POWER

Check electrical wiring in con-

trol box for loose connec-

tions.

Check for failed service

switch or relay.

Remote condenser

units only

Remote condenser

not running.

ICEMAKER RUNS BUT DOES NOT MAKE ICE

Condenser fan running but compressor not running

Check line voltage.

Check compressor winding

& components.

LOW WATER SAFETY

SWITCH OPEN

Check that water is turned on.

Check for restriction in water line.

ICEMAKER OPERATING BUT

SOFT ICE

Check bin switch

GEARMOTOR OVERLOAD

TRIPPED

Check water level control and evaporator water tube for lime build up restriction.

Check power to machine.

Check incoming water pressure

(minimum 10 lbs.).

Check water safety switch.

YesNo

Yes

Evaporator water tube

may have an air bubble.

High pressure

Check electrical

Check power

Clear air bubble from

Clean all related

Refer to guide

switch open or

wiring in control box

to condenser.

drain lines.

to Good Ice in

tube.

cycling on and off.

for loose connections.

High suction pressure

Low suction pressure

service manual.

(30 lbs. or above).

(20 lbs. or below).

CAUTION

Clear ice from evaporator and auger before re- setting over- load.

CLEAN

see

instructions.

Discharge

Non-condensible

Too much

Condenser

king valve

in system.

refrigerant in

fan not

dirty or

partially

system.

running.

restricted.

closed.

Evacuate and

Check electrical circuit

Open

recharge system.

to fan motor.

valve

Clean condenser.

Check fan motor.

Low pressure switch open

or cycling on and off.

Head

Pressure

high.

Valve stuck open.

Replace

valve.

TXV not operating properly.

Bulb loose.

Clean and tighten.

Suction line

not

insulated.

Bulb

uninsulated.

Clean and insulate.

TXV bulb lost charge.

Replace valve evacuate and recharge.

IMPORTANT

Icemaker runs when reset but problem has not been found.

Continue checking for overload as follows to guard against future problems

Icemaker runs

Short run trips again in 2 min- utes. Check gear- motor circuit.

Reset

overload.

	Reset but			Will not
	motor does			reset.
	not run.

	Check			Overload
	gearmotor			hot try
	circuit.			again.

				Will not
				reset
				replace
				overload

Low on

Remote condenser

Plugged

Restricted

Plugged or

Icemaker

refrigerant.

units only

liquid line

liquid line.

faulty TXV.

froze up.

dryer.

Check for

leaks.

LAC not operating properly (minimum discharge pressure 180 lbs.).

Replace LAC valve, evacuate and recharge system.

Replace dryer.

Evacuate and recharge system.

Check for

kinks or damage to liquid line.

Replace

valve. Evacuate and recharge system.

Check if auger is turning.

OVERLOAD GUIDE ELECTRICAL

High or low voltage weak power lines can cause overloads on icemaker restarts High running current. Check motor circuits and start relay – Auger delay failed.

ICEMAKER

Mechanical parts worn. Scored evaporator or auger. Worn thrust bearing. Ice maker not turning off. Failed ice level control.

Over compression. Low water inlet temperature. Restriction in water line from reservoir.

REFRIGERANT

Contaminated charge or bad compressor. Low charge or gas leak.

Low suction pressure. Improper expansion valve sensing bulb. Location or insulation and/or defective expansion valve

630460150

Check drive on	Check gears in	Check if extruding
gearmotor.	gearbox.	head is down in
		evaporator tube.
		evaporator tube.