Checking Outputs (Relay Test); Weather-Compensated Control Unit; Constant Temperature Control Unit - Viessmann VITODENS 200-W Installation And Service Instructions Manual

Diagnosis and service scans
Diagnosis
(cont.)
Brief scan
F Night circulation, solar thermal system (number)
6
F Differential temperature monitoring
7
F
8
F Software ver-
sion
9

Checking outputs (relay test)

Weather-compensated control unit

1. Press OK and simultaneously for approx. 4 s.
å
The following relay outputs can be controlled subject to system design:
Display
All actuators
Base load
Full load
Output, internal
Output 21/28
Heating circ pump HC2
Mixer HC2
Mixer HC2
Heating circ pump HC3
Mixer HC3
Mixer HC3
Outp. int. exten. H1
AM1 output 1
AM1 output 2
EA1 output 1
Solar circuit pump
Solar circ pmp min
Solar circ pmp max
SM1 output 22

Constant temperature control unit

1. Press OK and simultaneously for approx. 4 s.
å
" " flashes on the display.
Ü
74
OpenTherm extension (if installed)
DHW heating sta-
tus
Explanation
Off All actuators are off
On Burner operated at minimum output; circulation pump is started
On Burner operated at maximum output; circulation pump is started
On
Output sÖ
On Output
sA
On Heating circuit pump output enabled (extension to heating circuit with
mixer)
Open "Mixer open" output enabled (extension to heating circuit with mixer)
Close "Mixer close" output enabled (extension to heating circuit with mixer)
On Heating circuit pump output enabled (extension to heating circuit with
mixer)
Open "Mixer open" output enabled (extension to heating circuit with mixer)
Close "Mixer close" output enabled (extension to heating circuit with mixer)
On Output at internal extension enabled
On Output A1 at extension AM1 enabled
On Output A2 at extension AM1 enabled
On
Contact P - S at plug
On Solar circuit pump output
On Solar circuit pump output on solar control module SM1 switched to
minimum speed
On Solar circuit pump output on solar control module SM1 switched to
maximum speed
On Output
sS
Display
Solar central
heating backup
0: disabled
1: enabled
External hook-up 0-10 V
Display in %
2. "Actuator test"
active (boiler circuit pump)
active (circulation pump for cylinder heating)
aBJ of extension EA1 closed
on solar control module SM1 active
sF
on solar control module SM1 active
2. Select " " with
Ú
Output 22 switch-
ing state
0: OFF
1: ON
and confirm with OK.