Fault-Finding - REMEHA Quinta 85 Technical Information

10 FAULT-FINDING

10.1 General (all installations)
Check the following, in sequence (by service engineer):
Step Signs
1 Boiler display is blank.
2 Boiler display shows a
fault code
3 Boiler display shows
operating code
(see Par. 6.3)
4 Use boiler manual
override.
(see Par. 6.1.3)
5 Override external
controls by fitting a
link across terminals
3 and 4 of the boiler
terminal strip
Check points
The mains voltage 230 V Replace fuse if
The fuse in the euro-
connector
The control box fuses
For flashing digits
0 (no heat demand)
1 to 9, h, l, b
Does the boiler start up?
Does the boiler start up?
53
Actions
necessary, but check
what circuit it was
protecting and rectify if
faulty.
If yes, follow instructions
in the table, ref. Par. 10.2.
Go to point 4.
try to find the cause of
the fault, using operating
mode shown.
Yes, check external
control and wiring, or go
to point 6.
No, go to point 5.
Yes, check boiler
parameters. If all OK,
then replace control box.
No, repeat point 3,or go
to point 6.