TM 10--3510--221--24
0097 00--2
20 HP INVERTER FAULT -- Continued
0097 00
9. Continue laundry cycle or use maintenance menu to test heating system.
Does another ”20 HP INVERTER FAULT” occur?
YES Go to step 10.
NO Return to normal operation.
10. Position SW2 then SW1 to OFF.
11. Rotate still condenser fan by hand and check for smooth rotation.
Do fan rotate smoothly?
YES Go to step 12.
NO Replace condenser fan motor (WP 0263 00).
12. Rotate TF pump by hand and check for smooth rotation.
Do TF pump rotate smoothly?
YES Go to step 13.
NO Replace TF pump (WP 0266 00).
13. Remove cover from heater blower shroud.
14. Rotate burner blower wheel by hand and check for smooth rotation.
Do wheel rotate smoothly?
YES Reinstall cover on blower shroud. Go to step 15.
NO Replace burner blower motor (WP 0179 00).
15. Check wire connections between 20 HP inverter, still condenser fan, TF pump, burner blower motors for
short circuit.
Are wire connections OK?
YES Go to step 16.
NO Repair as necessary.
16. Check still condenser fan, TF pump, and burner blower motors for shorted windings.
Are motor windings shorted?
YES Replace still condenser fan motor (WP 0263 00), TF pump (WP 0266 00), or burner blower motor
(WP 0179 00) as necessary.
NO Replace 20 HP inverter (WP 0245 00).
17. Check cooling fans on 20 HP inverter.
Are fans operating?
YES Go to step 18.
NO Replace 20 HP inverter (WP 0245 00).
18. Check cooling fan on inverter enclosure.
Is fan operating?
YES Go to step 19.
NO Press RESET on inverter keypad. Go to INVERTER ENCLOSURE FAN DOES NOT TURN
ON (WP 0099 00).
