Alto-Shaam COMBITHERM CTC Series - Error Codes E05;E06 Troubleshooting

MN-35949 • Rev 04 • 06/16 • Combitherm® CT PROformance™ Series • Technical Service Manual • 91
Troubleshooting
Error Code E05/E06
Request E05 service kit and dispatch service agent.
Is the Variable Frequencey
Drive (VFD) address jumper
properly populated
on the board?
Is voltage supplied to the
VFD on terminal S105
L1/L2?
Yes
Yes
Is the LED on the VFD illuminated?
Add or remove the jumper and
retest.
Populate and retest.
Check the fuses for continuity,
replace the blown fuses. L1 is
supplied from the F4 fuse. L2 is
supplied by terminal 5 of RL Y50.
Retest.
Replace the VFD.
Is S905 populated with
the jumper (on single VFD
systems) or the last VFD (on
dual VFD systems)?
No
No
No
No
Yes