Operating instructions

ManualsBrandsViessmann ManualsBoilerWB2B

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 60

Relay test Press K and d simulta-

neously for approx. 2 s

Press d 63

Max. output (heating

mode)

Press K and F simulta-

neously for approx. 2 s

Press d 16

Operating conditions and

sensors

Press c Press d 65

Service scan c (if "Service" flashes) Press d 34

Adjusting the display con-

trast

Press d and asimulta-

multaneously; the display

darkens

– –

Press d and b simulta-

neously; the display be-

comes lighter

– –

Calling up acknowledged

fault messages

Press d for approx. 3 s 68

Fault history Press G and d simulta-

neously for approx. 2 s

Press d 69

Subscriber check (in con-

junction with LON)

Press L and d simulta-

neously for approx. 2 s

Press L

and d si-

multaneous-

ly

33

Emissions test function

"S"

Weather-compensated

control unit:

Press F and E for ap-

prox. 2 s simultaneously

Constant temperature con-

trol unit:

Press O and F for ap-

prox. 2 s simultaneously

F and E

or O and

F simulta-

neously for

approx. 1 s,

alternatively

automatic

after 30 min

–

Coding level 1

Plain text display

Press K and L simulta-

neously for approx. 2 s

Press K

and L si-

multaneous-

ly for approx.

1 s

36

Coding level 2

Numerical display

Press L and G simulta-

neously for approx. 2 s

Press L

and G si-

multaneous-

ly for approx.

1 s

39

Service level overview

59

Service scans

5692 672 GB