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IDC Installation Manual
Publication Number: 621057403INS - 12 - © 2005-2008, IMI Cornelius Inc.
Poor ice quality due to water quality or
ice maker problems
Correct water quality or repair ice maker
Beverage does not
dispense
No 24VAC to valves Restore 24 VAC to valves
No CO
2
pressure Restore CO
2
pressure
Beverage is too
sweet
Valve brix requires adjustment Adjust valve brix
Carbonator is not operating Repair carbonator
No CO
2
in carbonator Restore CO
2
pressure in carbonator
City water pressure supply low or
inconsistent
Booster pump must be used if dynamic
water pressure drops below 40 psig.
Unit will not
dispense
carbonated drinks.
Dispenses syrup
only.
CO
2
pressure in carbonator tank is too
high.
Check CO
2
pressure regulator setting.
75 psig recommended. Relieve
pressure from carbonator tank.
Water valve will not open Check electrical connection to water
valve. Check resistance of coil (should
be 9 ohms). Check for voltage at coil
when brand button is depressed.
Unit will not
dispense
carbonated drinks.
Spurts CO
2
and
syrup only.
Carbonator tank is empty, because tank
was emptied while power was applied
to unit. 5 minute time-out of carbonator
pump/motor occurred, and carbonator
pump is locked off.
Unplug the unit and reconnect the unit.
Main control board will reset, ice
agitation will occur, and carbonator tank
will refill to normal level.
Note that this can occur while the water
filter system is serviced or water supply
is shutoff. If drinks are drawn from the
dispenser while water pressure is
shutoff, the carbonator pump starts and
runs continuously, then shuts off on the
5 minute timeout.
1) low water pressure switch
deactivates carbonator pump, 2) after 5
minutes reset and retry carbonator
pump. If water supply is restored, the 5
minute timeout will not occur. Repeat
reset a second time, but on a third time,
then lockout carbonator pump, which
will generate a service call.
Carbonated drinks
are flat (low on
carbonation)
CO
2
is out Replace CO
2
Carbonator tank is 100% filled because
the city water pressure exceeds the
carbonator tank CO
2
pressure regulator
setting.
CO
2
setting for the carbonator tank is
75 psig, max water pressure is 60 psig.
If necessary, install a water pressure
regulating valve.
Low water pressure Could be caused by excessively long
runs (over 40 ft.) of 3/8” water supply
line.
Increase line size to 1/2”
Low water pressure Add water pressure booster pump
Plugged water filter. Change water filter
Water booster bladder has burst Replace water booster tank/bladder