Viessmann VITOCONTROL-S, WB2B, Service Instructions Manual, Page: 68 / 124

68
Display screen Explanation
Heating circuit pump M2
ON Mixer extension
Mixer open Mixer extension
Mixer closed Mixer extension
Int. output on Output sK internal extension
Heating pump A1 on External extension H1
Cylinder pump on External extension H1
Recirc.pump On External extension H1
Central fault On External extension H1
Constant temperature control unit
Press the following keys:
1.
K
+
d
simultaneously for approx.
2 s
2.
a
/
b
for the required relay out-
put
3. d relay test is completed
The following relay outputs can be controlled subject to system design:
Display screen
Explanation
1 Burner modulation base load
2 Burner modulation full load
3 Internal pump / output 20 "ON"
10
Output
sK
internal extension
11 Heating circuit pump A1 External extension H1
12 Circulation pump for cylinder heating External extension
H1
14 Central fault message External extension H1
Scanning operating conditions and sensors
Weather-compensated control unit
Press the following keys:
1. c "Select heating circuit" is dis-
played.
2. d
to confirm
;
wait approx. 4 s.
3. c press again.
Service scans
Checking outputs (relay test)
(cont.)
5692 760 GB