Viessmann MPA51 - Diagnosis

13
Faults with fault display on the display and programming unit
(fault codes)
Message codes
Message
code
System characteris-
tics
Cause Measures
A Burner does not start Gas supply pres-
sure too low; gas
pressure switch
switches off
Check gas flow pressure;
check gas pressure
switch
A Burner does not start Lack of gas Notify your gas supply util-
ity
c00 Burner does not start
New parameter
memory stick
Data transfer from
new parameter
memory stick via
password
Enter password (hexa-
decimal number between
0 and 255 or 00 and FF).
See installation instruc-
tions, burner compo-
nents.
F Burner is in a fault
state
See fault code See fault code, steps to
take
F1 (flash-
ing)
Burner does not start Parameter memo-
ry stick not plugged
in correctly or faul-
ty
Check parameter memory
stick or replace. See in-
stallation instructions,
burner components.
F2 (flash-
ing)
Burner does not start Connected display
is invalid
Use current display
9 On hold program Lack of gas at the
VPS gas pressure
switch or safety
chain not closed.
Select fault in the
fault memory. The
burner automati-
cally starts up
again in accord-
ance with the time
program.
Burner starts auto-
matically after
2 min, after 5 min
and then after 1 h.
Reset by holding down
the reset button until "9"
flashes.
Diagnosis
Diagnosis
5782 991 GB
Service