30
T-Product · BCU 465 · 2006 April
? The display flashes and indi-
cates
52
?
!
The BCU is being permanently
reset.
• Apply voltage to terminal 3 only
for reset, approximately 1 sec-
ond.
? The display flashes and indi-
cates
53
?
!
The actual time between two
starts is less than the minimum
time.
• Comply with Table Minimum Cy-
? The display flashes and indi-
cates
10
?
!
The BCU is repeatedly reset
(more than 5 times in 15 min-
utes).
• Avoid automatic reset by PLC or
without monitoring the burner.
Reset BCU manually.
? BCU does not start even
though all faults have been cor-
rected and the BCU has been
reset?
• Remove unit and return it to the
manufacturer for inspection.
Troubleshooting
Fault codes (?), Possible Causes (!) and Solutions (
•
)
