TM 10--3510--221--24
0097 00--1
20 HP INVERTER FAULT
0097 00
THIS WORK PACKAGE COVERS:
Troubleshooting 20 HP Inverter 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 display.
Does ”CONDENSER FAN OVERLOAD” appear?
YES Go to CONDENSER FAN OVERLOAD FAULT (WP 0054 00).
NO Go to step 2.
2. Observe operator panel display.
Does ”TF PUMP OVERLOAD” appear?
YES Go to TF PUMP OVERLOAD FAULT (WP 0078 00).
NO Go to step 3.
3. Open door on inverter enclosure.
4. Observe display on 20 HP inverter.
Does display indicate ”Er1, Er2, Er3, Er4, Er5, Er7, or FUS” ?
YES Replace 20 HP inverter (WP 0245 00).
NO Go to step 5.
5. Observe display on 20 HP inverter.
Does display indicate ”dbH, EF, LU, OC1, OC2, OC3, OL, OLU, OU1, OU2, or OU3?
YES Go to step 8.
NO Go to step 6.
6. Observe display on 20 HP inverter.
Does display indicate ”OH1 or OH3?
YES Go to step 17.
NO Go to step 7.
7. Observe display on 20 HP inverter.
Does display indicate ”Er6 or OH2?
YES Go to step 22.
NO Go to TYPICAL DISCRETE INPUT SIGNAL FAULT (WP 0107 00).
8. Press RESET on inverter keypad. Reinstall door on inverter enclosure.
