Friedrich FPHW093B - Page 70

70 PB
TROUBLESHOOTING
Error Code 19
Fig. 713
58
6.
Error code 19
Compressor drive in trouble
Check the wiring
between main
control board
and compressor
Check the
IPM
Check the outdoor fan is
fault and the outdoor
unit ventilation
Check the compressor
1.The resistance of the
windings right or not
2.The resistance between
the windings and grand
right or not
Replace the outdoor
control board
Corrent the connection
or replace the wires
and connectors
Change the control
board or replace it
Replace the fan or the
outdoor unit
ventilation
The compressor is
fault,change the
compressor
No
No
No
No
Yes
Yes
Yes
Yes
Is fastening screw
of IPM fastened?
fastening
No
Yes
test point:
Check the screw of IPM fastening：
IPM