6 Troubleshooting
- 56 -
Temperature sensor wirings correct?
Motor hot?
Short circuit PTC-P and PTC-N,
and see if trips Er45.0?
Fix the wirings
Reduce load; use more fans;
use higher rating motor
Protection signal fault
Motor overheat fault
Yes
Yes
Yes
No
No
Replace PG card
No
Short circuit KTY+ and KTY-,
and see if trips Er45.3?
F9-59 value reasonable?
Set it
properly
No
Yes
Seek for support
Pressure sensor wiring correct?
Pressure sensor power supply normal?
Pressure sensor output normal?
Fix it
Fix it
Replace sensor
Pressure sensor fault
No
No
No
Yes
Yes
Replace PG card
Yes
Seek for support
