© 2004-2005, IMI Cornelius Inc.

- 21 -

Publication Number: 630460174SER

TROUBLESHOOTING CHART - ICEMAKER NOT OPERATING

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO POWER

 

 

 

 

 

ICEMAKER RUNS BUT

 

 

LOW WATER SAFETY

 

ICEMAKER OPERATING BUT

 

GEARMOTOR OVERLOAD

 

 

 

 

 

 

 

DOES NOT MAKE ICE

 

 

SWITCH OPEN

 

SOFT ICE

 

TRIPPED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remote condenser

Condenser fan running

 

 

 

 

 

 

Check electrical wiring in con

units only

 

 

 

 

 

 

Check water level control

 

 

 

but compressor not running

 

 

 

 

and evaporator water tube

trol box for loose connec

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check bin switch

 

for lime build up restriction.

tions.

 

 

 

 

 

 

Check line voltage.

 

 

 

Check for failed service

 

Remote condenser

 

Check that water is turned on.

 

 

 

 

switch or relay.

 

not running.

 

 

 

Check compressor winding

Check for restriction in water line.

 

 

 

 

Check power to machine.

 

 

 

 

 

& components.

 

Check incoming water pressure

Yes

No

 

 

 

 

 

 

 

 

 

 

 

(minimum 10 lbs.).

No

Yes

 

 

 

 

 

 

 

 

 

Check water safety switch.

 

 

 

 

 

 

 

 

 

 

 

Evaporator water tube

 

 

 

 

 

 

High pressure

Check electrical

Check power

 

may have an air bubble.

 

 

Clean all related

Refer to guide

CAUTION

CLEAN

 

Clear air bubble from

 

 

switch open or

wiring in control box

to condenser.

 

tube.

 

 

 

drain lines.

to Good Ice in

Clear ice from

see

cycling on and off.

for loose connections.

 

 

 

 

High suction pressure

Low suction pressure

service manual.

evaporator and

instructions.

 

 

 

 

 

 

 

 

(30 lbs. or above).

(20 lbs. or below).

 

auger before re

 

 

 

 

 

 

 

 

 

 

setting over

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

load.

 

 

 

 

 

 

 

 

 

Head

TXV not

Suction line

TXV bulb

 

Reset

 

 

 

 

 

 

 

 

 

 

overload.

 

 

 

 

 

 

 

 

 

Pressure

operating

not

lost charge.

 

 

 

 

 

 

 

 

 

 

high.

properly.

insulated.

 

 

 

 

Discharge

Non-condensible

Too much

 

Condenser

Condenser

 

 

 

 

 

 

 

king valve

in system.

 

refrigerant in

 

fan not

dirty or

Valve

Bulb

Bulb

Replace valve

 

 

 

partially

 

 

system.

 

running.

restricted.

 

 

 

 

 

 

stuck

loose.

uninsulated.

 

 

 

closed.

 

 

 

 

 

 

 

evacuate and

Icemaker runs

Reset but

Will not

 

 

 

 

 

 

 

open.

 

 

 

 

 

 

 

 

 

 

 

 

 

recharge.

 

motor does

reset.

 

 

 

 

 

 

 

 

Replace

Clean

Clean and

 

 

not run.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

valve.

and

insulate.

 

 

 

 

Open

Evacuate and

 

Check electrical circuit

 

tighten.

 

IMPORTANT

Short run trips

Check

Overload

recharge system.

 

to fan motor.

 

 

 

 

 

Icemaker runs when reset

again in 2 min

gearmotor

hot try

valve

Clean condenser.

 

Check fan motor.

 

 

 

 

 

but problem has not been

utes. Check gear

circuit.

again.

 

 

 

 

 

 

 

 

 

 

 

found.

motor circuit.

 

 

 

 

 

 

 

 

 

 

 

 

 

Continue checking for

 

 

 

Low pressure switch open

 

 

 

 

 

 

 

 

overload as follows to

 

 

 

 

 

 

 

 

 

 

 

guard against future

 

 

 

or cycling on and off.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

problems

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

LAC not operating

Replace

 

Check for

Replace

Check if

 

 

 

 

 

 

leaks.

 

properly (minimum

dryer.

 

kinks or

valve.

auger is

 

OVERLOAD GUIDE

 

 

 

 

 

 

discharge pressure

Evacuate

damage to

Evacuate

turning.

 

ELECTRICAL

 

 

 

 

 

 

180 lbs.).

 

and

 

liquid line.

and

 

 

High or low voltage weak power lines can cause overloads on icemaker restarts

 

 

 

 

 

recharge

 

recharge

 

 

High running current. Check motor circuits and start relay - Auger delay failed.

 

 

 

 

 

system.

 

 

system.

 

 

ICEMAKER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mechanical parts worn. Scored evaporator or auger. Worn thrust bearing.

 

 

 

 

 

 

 

 

 

 

 

 

Ice maker not turning off. Failed ice level control.

 

 

 

 

 

 

 

 

 

 

 

No

 

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

 

 

 

 

 

 

 

 

 

 

 

 

reservoir.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFRIGERANT

 

 

 

 

 

 

Replace LAC valve,

 

 

 

 

 

 

Contaminated charge or bad compressor.

 

 

 

 

 

 

 

 

 

 

 

Low charge or gas leak.

 

 

 

 

 

 

evacuate and

 

 

 

 

 

 

 

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

 

 

 

recharge system.

 

 

 

 

 

 

 

and/or defective expansion valve

 

 

 

 

 

 

 

 

 

 

 

Check drive on

 

Check gears in

 

Check if extruding

gearmotor.

 

gearbox.

 

head is down in

 

 

 

 

 

 

evaporator tube.

TROUBLESHOOTING

Continuous Flow Icemaker Service Manual

Page 25
Image 25
Cornelius 1000 service manual Troubleshooting Chart Icemaker not Operating

1000 specifications

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