Checking Outputs (Relay Test) - Viessmann VITOLADENS 300-W Installation And Service Instructions Manual

Diagnosis
(cont.)
Line (brief
scan)
1
Internal circulation
pump
8: Variable
speed
pump
0: w/o
1: Wilo
2: Grund-
fos
9: 0

Checking outputs (relay test)

1. Press OK and å simultaneously
for approx. 4 s.
The following relay outputs can be controlled subject to system design:
Display
All actuators OFF
Burner stage 1 ON
Burner stage 1 + ON
2
Output, internal ON
Valve Heating
Valve Centre
Valve DHW
Heating circ ON
pump HC2
Mixer HC2 Open
Mixer HC2 Close
2 3
0
Software
version,
variable
speed
pump
0: no var-
iable
speed
pump
0 0
2. "Actuator test"
Explanation
All actuators are off
Burner operates with stage 1; internal pump starts
Burner operates with stage 2; internal pump starts
Internal output sÖ (int. pump) active
Diverter valve set to heating mode
Diverter valve in central position (filling/draining)
Diverter valve set to DHW mode
Heating circuit pump output enabled (extension to
heating circuit with mixer)
"Mixer open" output enabled (extension to heating
circuit with mixer)
"Mixer close" output enabled (extension to heating
circuit with mixer)
Diagnosis and service scans
Field
4 5
0 0
0 Software
version,
exten-
sion AM1
6
0
Software
version, ex-
tension
EA1
93