Display screen
Brief scan
c
Version
Equipment (EEPROM)
Version
Burner control unit (EE-
PROM)
d
Variable
speed
pump
0: w/o
1: Wilo
2: Grund-
fos
Software
version
variable
speed pump
Checking outputs (relay test)
Weather
–
compensated control unit
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
Base load
Burner modulation lower output
Full load
Burner modulation upper output
Int. pump ON
Int. pump/output 20 ON
Heating valve
Diverter valve set to heating mode
Valve central pos.
Diverter valve in central position (filling)
DHW valve
Diverter valve set to DHW mode
Heat. circ. pump M2 ON
Mixer extension
Close mixer
Mixer extension
Mixer open
Mixer extension
Output int.
Internal extension
Heat. circ. pump A1 ON
Ext. extension
Cylinder pump ON
Ext. extension
Temperatures, boiler coding card and brief . . .
(cont.)
67
Service scans
5692
569
GB
Summary of Contents for Vitodens 300
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