Buderus 500 - 28/C Servicing Manual page 41

box 61
Press the menu button (item 1) on the DBA control panel
of the boiler.
Configure the menu as required, see box 14.
box 62 Check/replace fuses (1)
H
DANGER OF FATAL ACCIDENT
due to electric shock
Take the boiler out of operation, see box 43, 44 or 47.
box 63
1
2
Remove the casing from the boiler, see box 47.
Loosen the cap screw on the DBA control panel (item 1).
Tip the DBA control panel forwards (item 2).
We reserve the right to make technical modifications
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006
box 64
1
box 65
box 66
H
A
Remove the rear section of the DBA control panel,
see box 70.
Remove the fuse from the fuse holder.
Check the fuse with a multimeter. If the fuse possesses
infinitely high electrical resistance, it is defective.
Replace the defective fuse with a (new) 2.5 AT slow blow
reserve fuse.
Refit the DBA control panel, following the above
procedure in reverse order.
Refit the casing and place the boiler into operation,
see box 51, 53, 54 or 55.
Check fan – activation 230V AC
DANGER OF FATAL ACCIDENT
due to electric shock
CAUTION!
To prevent damage, do not insert the measuring
electrodes of the multimeter too far into the holes of the
plug-and-socket connection.
Remove the casing and place the boiler out of operation,
see box 47, 43 or 44.
Buderus Ltd. • http://www.buderus-domestic.co.uk
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