Troubleshooting
Calling up fault code history
The most recent 10 faults are saved and may be called up.
Calling up current fault codes
74
1. Press G and d simultaneously
for approx. 2 seconds.
2. Call up the individual fault codes
with a or b.
Fault code order
Fault code
1
most recent
.
.
.
.
.
.
10
10th from most
recent
All saved fault codes can be
deleted with e.
3. Press d.
Red fault indicator U flashes for all
faults.
"Fault" flashes in the programming
unit display when a fault message is
issued.
A fault in the burner control unit
causes the display to flash E.