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Quest Elite QLT 2000 HC & Quest Elite QLT 2000
TROUBLESHOOTING GUIDE
The following tables contain trouble-shooting information intended to aid an experienced service person in diagnos-
ing operational problems that may occur. For further assistance, contact the IMI Cornelius Customer Services
department at 800-238-3600 between the hours of 7:30A.M. and 5:00P.M. Central Standard Time. You must have
the model and serial number (Located on the right side of the dispenser) when calling.
Symptom
A. No power to dispenser due to tripped cir-
Unit totally inoperative
B. Loose or broken power supply connection
A. Line voltage not within nameplate specifi-
B. No water in water ice bath or water level
C. Defective Ice Bank Control or sensing probe.
D. Cabinet fan inoperative resulting in warm con-
E. Compressor short cycles on overload.
No Cooling
F. Compressor starts but hums & trips overload.
G. Defective compressor overload or start capaci-
H. Compressor starts but does not switch off of
I. Refrigerant leak.
A. No water in dispenser.
B. Water supply line inside refrigerated cabinet
C. Water solenoid located on pump platform
D. Main water solenoid/strainer located at the rear
No water dispensed,
E. Water supply pressure is greater than 80 psi
concentrate only
F. Freeze-up of water coil in ice bath.
Publication Number: 620054882
Probable Cause
cuit breaker.
inside dispenser.
cation causing compressor overload to
trip.
extremely low, exposing ice bank sensing
probe.
centrate (water continues to cool).
tor.
start winding.
disconnected from pump platform.
clogged or defective.
of dispenser is clogged, binding or defective.
(5.5 bar) forcing BRIX flow control closed.
Table 1.
A. Reset circuit breaker. Confirm that breaker
is correct size & no other equipment is
operating on the same circuit. Also confirm
that supply voltage is +/-10% of nameplate
specification.
B. Repair connection.
A. Contact an electrician.
B. Fill ice bath to proper water level.
C. Replace.
D. Replace.
E. Excessively high discharge pressure due to
restricted condenser or inoperative condenser
fan motor.
F. Seized or shorted compressor, replace.
G. Test & replace.
H. Relay or compressor is defective. Test &
replace faulty item.
I. Repair leak, evacuate & recharge system.
A. Restore water.
B. Reconnect
C. Disassemble & clean solenoid. Replace if nec-
essary.
D. Remove & clean strainer. Confirm 24VDC is
present at solenoid during dispense. Confirm
solenoid coil is not open. Disassemble & clean
solenoid.
E. Add external regulator & lower pressure to 50
psi (3.5 bar).
F. Unplug dispenser & allow 2-4 hrs. to thaw.
Check operation of agitator motor & ice bank
control.
Refrigeration system may be low on charge
resulting in a deformed ice bank & freeze-up of
water coil in ice bath.
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Remedy
© 2011-2013, IMI Cornelius Inc.
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