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34300614000
Trouble RemedyProbable Cause
COMPRESSOR DOES NOT
OPERATE (con’t).
J. Inoperable control board J. Replace control board.
K. Inoperable contactor K. Replace contactor.
L. No voltage to control board. L. Check for loose or broken wiring.
Check 240/24 VAC power
transformer for 24 VAC output.
(see NOTE below).
M. Inoperable control board or
water/ice sensor PC board.
M. Replace control board.
N. Inoperable ICE SENSOR. N. Replace ICE SENSOR.
O. EVAP IN, COND OUT, or
EVAP OUT sensor is open,
shorted, or out of temperature
range.
O. Replace inoperable sensor.
P. Hydro Boostâ WATER
SENSOR is shorted or open
circuit.
P. Check for loose, broken, or
disconnected wire or plug at
pre-cool coil. Repair or replace
wire or secure plug. If Hydro
Boostâ WATER SENSOR is
inoperable, replace sensor.
NOTE: Confirm which sensor has failed by using the Aurora Series System Analyzer (P/N 309197-000).
NOTE: The 240/24 VAC power transformer has an overload reset button located on its 24 VAC output
side (see Figure 3). An overload on the transformer will cause its reset button to pop out disrupting
the 24 VAC output to the main control board. Overload button must be pressed in to restore 24 VAC
output.
COMPRESSOR OPERATES
CONTINUOUSLY BUT DOES
NOT FORM SUFFICIENT ICE
BANK
A. Cooling capacity is exceeded
by overdrawing.
A. Reduce amount of drinks drawn
per given time.
B. Air circulation through Remote
Condenser Coil and Fan
Assembly Condenser Coil is
restricted.
B. Check and if necessary, clean
condenser coil as instructed.
C. Insufficient refrigerant charge. C. Check Cooling Unit sight glass for
bubbles or liquid break. Find and
repair refrigeration leak, the
replenish refrigerant charge.
D. Inoperative or disconnected
pulse-modulating expansion
valve (see REFRIGERATION
FLOW DIAGRAM).
D. Check that expansion valve is
operating by touch (should be
able to feel valve pulse).
Check for loose or disconnected
wire to solenoid coil. If necessary,
troubleshoot expansion valve with
a gage set to see if it is opening.
If expansion valve is not opening,
suction pressure will be in a
vacuum.