CVHE-SB-32A 27
Problem 66: Starter Contactor Interrupt Failure Diagnostic when powering up the UCP.
Corrective Action:
1 Starter module is sensing motor current greater than 10% RLA when motor should be OFF on
a power up or in OFF state.
2 Starter module is sensing motor current greater than 10% RLA .68 Sec. after initiating a
shutdown.
3 Look at phase currents as read in the Compressor Report.
4 If power factor correction capacitors (PFCCs) are used, these capacitors should be placed on
the motor side of the 2K1 and 2K2 contactors so as to be disconnected from the line when the
motor is off.
5 Replace the Starter module. Could be a software problem or bad module.
6 Contactor or contactor wiring problem.
Problem 67: Starter Dry Run Test Diagnostic upon entering a Starter Dry Run Test.
Corrective Action:
The Starter module is sensing either the presence of line voltage from the PTs or
line current from the CTs.
Problem 68: Starter Dry Run will not work.
Corrective Action:
1 If the PTs are installed, they sense voltage and prevent dry run.
2 A major diagnostic is present.
3 Unit is not in Stop mode.
4 Starter senses the presence of currents.
5 There is a MMR diagnostic present.
Problem 69: Starter Fault type 1, 2 or 3
Corrective Action:
1 Program the correct starter type in the machine configuration menu.
2 Repair or replace contactors.
3 Replace Starter module. Possible faulty relay output.
4 Starter panel wiring.
5 Check CT connections to the Starter module.
Problem 70: Stepper motor is humming.
Corrective Action:
While in the hold mode, the stepper motor is driven with 1.0 amps. This is the
case even if the actuator is fully closed. The humming is normal.
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