Function Key combination Exit Page
Temperatures, boiler cod-
ing card and brief scans
Press K and G simulta-
neously for approx. 2 s
Press d 72
Relay test Press K and d simulta-
neously for approx. 2 s
Press d 75
Max. output (heating
mode)
Press K and F simulta-
neously for approx. 2 s
Press d 29
Operating conditions and
sensors
Press c Press d 76
Service scan c (if "Service" flashes) Press d 51
Adjusting the display con-
trast
Press d and a simulta-
neously; the display dar-
kens
– –
Press d and b simulta-
neously; the display be-
comes lighter
– –
Calling up acknowledged
fault messages
d for approx. 3 s 80
Fault history Press G and d simulta-
neously for approx. 2 s
Press d 81
Subscriber check (in con-
junction with LON sys-
tem)
Press L and d simulta-
neously for approx. 2 s
Press L
and d si-
multaneous-
ly
50
Emissions test function
"S"
Weather-compensated
control unit:
Press F and E simulta-
neously for approx. 2 s
Constant temperature con-
trol unit:
Press O and F simulta-
neously for approx. 2 s
Press F
and E or
O and F
simulta-
neously for
approx. 1 s;
alternatively
automatic
after 30 min
–
Coding level 1 Press K and L simulta-
neously for approx. 2 s
K and L 53
Coding level 2 Press L and G simulta-
neously for approx. 2 s
L and G 55
Resetting codes to their
delivered condition
Press L and G simulta-
neously for approx. 2 s;
then press e
– 70
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