Carrier C302 NPR, Operating Instructions Manual

Page: 18 / 52

14 Model C302 NPR Important: To the Operator
The following are explanations of the possible faults
and the display screens. Lines 2 and 3 indicate the
faults found in freezing cylinders 1 and 2
respectively.
1. NO FAULT FOUND - No fault conditions are
apparent.
FAULT DESCRIPTION
L:
NO FAULT FOUND
R: NO FAULT FOUND
CLR + + + SEL
2. BEATER OVERLOAD - Beater motor is out on
overload. When this fault occurs, the affected
side of the machine automatically turns off. The
fault clears when the condition is corrected.
FAULT DESCRIPTION
L: BEATER OVERLOAD
R: BEATER OVERLOAD
CLR
+ + + SEL
3. CHK REFRIG SYS PSI - Compressor is out on
high head pressure. When this fault occurs, the
machine automatically turns off. The fault
clears when the condition is corrected.
FAULT DESCRIPTION
L: CHK REFRIG SYS PSI
R: CHK REFRIG SYS PSI
CLR
+ + + SEL
4. THERMISTOR SHORT - One or both of the
barrel (freezing cylinder) thermistor probes are
faulty.
FAULT DESCRIPTION
L: THERMISTOR SHORT
R: NO FAULT FOUND
CLR
+ + + SEL
5. THERMISTOR OPEN - One or both of the
barrel (freezing cylinder) thermistor probes are
faulty.
FAULT DESCRIPTION
L: THERMISTOR OPEN
R: NO FAULT FOUND
CLR
+ + + SEL
6. SYRUP PRESS LOW - When the syrup out
indicator displays a lack of syrup, the barrel will
enter a HOLD mode. At this time, no
refrigeration or product flow from the flow
control will be allowed. Only the beater will
operate. When the syrup is satisfied the barrel
will refill the product tank and then
automatically return to the AUTO mode. The
fault message and the warning tone will clear.
(See “Syrup Out Indicator” on page 18.)
FAULT DESCRIPTION
L: NO FAULT FOUND
R: SYRUP PRESS LOW
CLR
+ + + SEL
7. CO
2
PRESSURE LOW - When the CO
2
out
indicator displays a lack of CO
2
, a 60 second
internal timer will start. If the CO
2
is not
replenished at the end of the 60 seconds, both
freezing cylinders will shut down and this fault
message will appear. Replenish the CO
2
and
the fault message and warning tone will clear.
FAULT DESCRIPTION
L: CO2 PRESSURE LOW
R: CO2 PRESSURE LOW
CLR
+ + + SEL
8. H
2
O PRESSURE LOW - When the water out
indicator displays a lack of water, a 60 second
internal timer will start. If the water is not
replenished at the end of the 60 seconds, all
freezing cylinders will shut down and this fault
message will appear. Replenish the water and
the fault message and warning tone will clear.
FAULT DESCRIPTION
L: H2O PRESSURE LOW
R: H2O PRESSURE LOW
CLR
+ + + SEL