
© 2011-2013, IMI Cornelius Inc.
- 21 -
Publication Number: 620054882
Quest Elite QLT 2000 HC & Quest Elite QLT 2000
No water & no concen-
trate, refrigeration is
working.
A. Black service switch located on the rear of
the cabinet door in OFF position.
B. White door switch open
C. 6.25 amp fuse inside front electrical box blown.
D. No output from transformer.
E. Defective voltage regulator board (VRB)
located inside front electrical box.
F. Defective dispense push button or portion con-
trol board.
A. Turn on switch.
B. Door switch must be closed in order to dis-
pense. Check switch operation & replace if nec-
essary.
C. Replace with 6.25, 250VAC slow blow fuse &
test.
D. Confirm transformer output of 24VAC +/-2.
Replace transformer if necessary.
E. Measure across the VDC output of the board.
There should be 28VDC present when the dis-
pense button is pressed. Replace VRB if nec-
essary.
F. Test & replace if necessary.
No concentrate dis-
pensed, water only.
A. Concentrate container not fully engaged
into receptacle on pump platform.
B. Dispense/Flush lever in FLUSH position
C. Concentrate too cold, not properly thawed.
D. Defective pump motor.
A. Refer to Concentrate Loading section of
this manual.
B. Move lever to DISPENSE position
C. Concentrate should be 35 to 40
°
F (1.7 to
4.5
°
C) prior to loading.
D. Replace pump motor.
Warm drinks
A. Ambient air around dispenser is too warm.
B. Excessive demand on dispenser.
C. Dirty condenser coil.
D. Inoperative condenser fan.
E. Defective Ice Bank Control.
F. Loss of refrigerant charge due to leak in sys-
tem.
A. Relocate dispenser.
B. Add water pre-cooler or second dispenser
C. Clean condenser coil.
D. Replace condenser fan motor.
E. Test & replace if necessary.
F. Repair leak and recharge system.
Water continuously drips
from nozzle in OFF
mode.
A. Main water solenoid at base of unit or
water solenoid on pump platform not shut-
ting off completely.
A. Clean solenoid(s), replace parts as neces-
sary (refer to Planned Maintenance sec-
tion).
Concentrate warm,
water cold.
A. Cabinet fan inoperable.
B. Agitator motor/pump inoperable or restricted.
C. Loss of refrigerant charge due to leak in sys-
tem.
A. Check/replace fan.
B. Check/replace agitator motor.
C. Repair leak & recharge system.
BRIX problem
A. Water supply pressure too low, less than
20 psi (1.4 bar) flowing water pressure.
B. Water flow control binding or spring is defec-
tive.
C. Improperly thawed concentrate. BRIX changes
as concentrate temperature changes (concen-
trate becomes thinner as temperature rises)
A. Correct water supply problem to ensure a
constant 50 psi (3.5 bar) flowing to dis-
penser.
B. Clean and/or replace parts as necessary.
C. Concentrate should be 35 to 40
°
F (1.7 to
4.5
°
C) prior to loading.
Table 1.
Symptom
Probable Cause
Remedy
Summary of Contents for McDonald's QLT-2000
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