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62-11039
7-57
Alarm
NO.
Steps
ALARM / CAUSE
CORRECTIVE ACTION
7.8 SENSOR ALARMS
121 CHECK AMBIENT AIR SENSOR
•
TRIGGER–ON: Ambient Air Sensor is not within the range of --53
°
F to +158
°
F (--47
°
C to +70
°
C)
•
UNIT CONTROL: A value of 122
°
F (50
°
C) will be used for any calculations
•
UNIT CONTROL: A value of 122
°
F (50
°
C) will be used for any calculations.
•
RESET CONDITION: Auto Reset when Ambient Air Sensor is in range 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, the active alarm
should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
1.
Check Ambient Air Sensor
a. Inspect Ambient Air Sensor &
connector
No damage to sensor
No damage, moisture, or corrosion in connector
b. Check Ambient Air Sensor resistance
(See Note 4)
(Refer to Section 8.28 for complete resistance chart)
10,000 Ohms @ 77
°
F (25
°
C)
2.
Check Ambient Air Sensor Wiring
a. Inspect harness & control box
connector pins & terminals. (See
wiring schematic)
No physical damage to harness.
No damaged or corroded pins
122 CHECK RETURN AIR SENSOR
•
TRIGGER–ON: Return Air Sensor is not within the range of --53
°
F to +158
°
F (--47
°
C to +70
°
C)
•
UNIT CONTROL:
If Alarm 123 -- Check Supply Air Sensor -- is not active: alarm only and switch to supply air control.
If Alarm 123 is active and functional parameter temperature control is set for return air and the setpoint
If Alarm 123 is active and functional parameter temperature control is set for return air and the setpoint
for compartment One is in the perishable range: alarm and compartment 1 will shut down.
If Alarm 123 is active and setpoint is frozen: alarm and compartment one will operate in reduced capacity
cool mode.
•
RESET CONDITION: Auto Reset when Return Air Sensor is in range 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, the active alarm
should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
1.
Check Return Air Sensor
a. Inspect Return Air Sensor & connector No damage to sensor
No damage, moisture, or corrosion in connector
b. Check Return Air Sensor resistance
(See Note 4)
(Refer to Section 8.28 for complete resistance chart)
10,000 Ohms @ 77
°
F (25
°
C)
2.
Check Return Air Sensor Wiring
a. Inspect harness & control box
connector pins & terminals (See
wiring schematic)
No physical damage to harness.
No damaged or corroded pins
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 ...