Display
Explanation
DHW circ. pump ON
Ext. extension
Central fault ON
Ext. extension
Solar circuit pump ON
Vitosolic
Constant temperature control units
1.
Press
K
and
d
simultaneously
for approx. 2 s.
Relay test is activated.
2.
Control relay outputs with
a
and
b
.
3.
Press
d
.
Relay test is completed.
Subject to the actual equipment level, the following relay outputs can be con-
trolled:
Display
Explanation
1
Burner modulation lower output
2
Burner modulation upper output
3
Diverter valve set to heating mode
4
Valve in central position
5
Valve set to DHW mode
6
Internal pump / output 20 ON
10
Output
sK
internal extension
11
Heating circuit pump A1 external extension
12
Cylinder primary pump external extension
13
DHW circulation pump external extension
14
Central fault external extension
Checking outputs (relay test)
(cont.)
68
Service scans
5692
569
GB
Summary of Contents for Vitodens 300
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