Carrier TRANSICOLD Vector 8500 User Manual

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04002 HIGH ECONOMIZER SUPERHEAT
• ACTIVATION: With unit running in economized mode for 15 minutes, ECXV open greater than 99% for 5
minutes, and a box temperature less than 14°F (−10°C); economizer superheat is above 74°F (23°C) for
5 minutes.
NOTE
This alarm can be caused by a stuck ECXV, not letting enough liquid into the economizer circuit. An
inaccurate economizer pressure transducer or economizer temperature sensor can also cause this
alarm.
• UNIT CONTROL: Engine and Electric Operation: Alarm only.
• RESET CONDITION: Calculated economizer superheat reaches the desired range, or < 60°F (15°C) for
2 minutes. Unit Changes from Economized Mode to standard mode or Compressor shuts off, 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). (Refer to Note 1 in Notes Section, page 7-2.) Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1. Check For Low Refrigerant
Charge Check refrigerant level in the receiver. Generally, level should be between upper & lower
sight glasses with a refrigerated compartment temperature of 35°F (1.0°C) or lower. refer to Section
8.6.2
2. Check Economizer Temperature Sensor
Inspect sensor & connectors. Verify there is no damage to sensor, and no damage, moisture, or cor-
rosion in connectors.
3. Check Economizer Pressure Transducer
Inspect sensor & connectors. Verify there is no damage to sensor, and no damage, moisture, or cor-
rosion in connectors.
4. Perform Pretrip
Run Pretrip and check for alarms. Any active alarms must be corrected and cleared before proceeding.
5. Check Economizer Expansion Valve (ECXV)
a. Visually inspect valve. Verify there is no damage to valve, and no damage, moisture, or corrosion
in coil. Check coil is seated properly.
b. Check operation of valve. Refer to Section 8.8.7.
6. Check Expansion Valve (EVXV)
a. Visually inspect valve. Verify there is no damage to valve, and no damage, moisture, or corrosion
in coil. Check coil is seated properly.
b. Check operation of valve. Refer to Section 8.8.7.

Carrier TRANSICOLD Vector 8500 Specifications

General

Brand	Carrier TRANSICOLD
Model	Vector 8500
Category	Automobile Accessories
Language	English