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7-102
62-11039
Alarm
NO.
Steps
ALARM / CAUSE
CORRECTIVE ACTION
P191 CHECK UL2
•
TRIGGER–ON: The pressure differential between suction and discharge pressures did not change as
expected when the UL2 (Front/Rear) Unloader was de-energized/loaded (discharge pressure should rise
and suction pressure should drop) or when it was energized/unloaded (discharge pressure should drop
and suction pressure should rise
and suction pressure should rise.
•
UNIT CONTROL: Engine and standby operation: Pretrip will fail and display “PRETRIP FAIL AND
COMPLETED”.
•
RESET CONDITION: Auto Reset if pre--trip mode is started again, or alarm may be manually reset via
keypad or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (See Note 1) Operate the unit through the appropriate modes to see if any active alarm occurs. Continue
with the steps below as necessary.
1.
Check wiring to DPT & SPT
a. Verify that correct wires are
connected to each transducer
Plugs to transducers are the same. The correct wire plug
must be connected to the proper transducer.
2.
Check for Check UL2 Alarm
a. Check for alarm 86 or P164
Alarm conditions must be corrected and the alarm cleared
to continue
3.
Confirm Compressor Suction Pressure Transducer Is Working
a. Check CSP
Attach manifold gauge set and compare CSP reading from
microprocessor display.
Repair and Replace if required.
Summary of Contents for VECTOR 1800 MT
Page 1: ......
Page 2: ...OPERATION SERVICE MANUAL for VECTOR 1800 MT Trailer Multi Temp Refrigeration Units ...
Page 19: ...1 5 62 11039 1 3 SAFETY DECALS ...
Page 20: ...1 6 62 11039 62 03958 00 Heat Warning 62 03957 01 High Voltage 62 60280 00 Standby Safety ...
Page 21: ...1 7 62 11039 ...
Page 303: ...10 1 62 11039 ...
Page 310: ...10 8 62 11039 BASED ON ENGINEERING SCHEMATIC 62 60926 REV G NEXT SHT ...
Page 311: ...10 9 62 11039 FROM PREVIOUS SHT ...