TM 10--3510--221--24
0108 00--1/2 blank
TYPICAL INVERTER DOES NOT RESET WHEN RESET
SWITCH IS PRESSED
0108 00
THIS WORK PACKAGE COVERS:
Troubleshooting Typical Inverter Does Not Reset RESET Switch Is Pressed Fault
INITIAL SETUP:
Maintenance Level
Materials/Parts
Unit
Tools and Special Tools
Equipment Conditions
Tool Kit, General Mechanics (Item 1, WP 0272 00)
Power must be applied at main control
Multimeter (Item 2, WP 0272 00)
enclosure (WP 0010 00).
1. Observe operator panel A display.
Is a ”10HP, 20HP, or DRUM INVERTER FAULT” message displayed?
YES Go to step 2.
NO Return to normal operation.
2. Press appropriate RESET switch on inverter enclosure.
3. Wait about 30 seconds then observe operator panel A display.
Is a ”10HP, 20HP, or DRUM INVERTER FAULT” message displayed?
YES Go to step 4.
NO Return to normal operation.
4. Open door on inverter enclosure.
5. Press appropriate RESET switch on suspect inverter.
6. Wait about 30 seconds then observe operator panel A display.
Is a ”10HP, 20HP, or DRUM INVERTER FAULT” message displayed?
YES Go to appropriate inverter fault troubleshooting procedure (WP 0093 00), (WP 0096 00), or
(WP 0097 00).
NO Go to step 7.
7. Position SW2 to OFF.
8. Remove wires connected to suspect RESET switch PBS7, PBS8, PBS9, or PBS10.
9. Press suspect RESET switch, then check for continuity across (+) and (--) terminals.
Does continuity exist?
YES Go to step 10.
NO Replace inverter RESET switch (WP 0252 00).
10. Check wire connections between suspect RESET switch and inverter.
Are connections OK?
YES Replace suspect inverter (WP 0245 00).
No Repair as required.
END OF WORK PACKAGE
