Codan 6725-W/E-AC/EX-CE - Figure 23: BUC Fan Fault Diagnosis Chart 1

Maintenance and fault finding
94 Block Up Converter Systems 6700/6900 series User Guide
Figure 23: BUC fan fault diagnosis chart 1
BUC fan fault
diagnosis chart 1
Reset BUC using RST
and RLF commands.
Is fan fault
still present?
Check fan fault using
VFS command.
Are fan(s)
running?
See BUC fan fault
diagnosis chart 2.
Fan operation
normal.
BUC faulty.
Refer to Codan.
No
Yes
No
Yes