Viessmann VITODENS 200-W Service Instructions Manual page 89

Checking outputs (relay test)
Constant temperature control unit
1. Press OK and å simultaneously
for approx. 4 s.
"Ü" flashes on the display.
2. Select Ú " " and confirm with OK.
3. Select required actuator (output) with
V/v (see following table):
The following actuators (relay outputs) can be controlled subject to system
design:
Display
0
1
2
3
4
5
6
10
15
16
17
18
19
20
21
Explanation
All actuators have been switched off
Burner operates at minimum output; internal pump starts
Burner operates at maximum output; internal pump starts
Internal output sÖ (internal pump) is enabled
Diverter valve set to heating mode
Diverter valve in central position (filling/draining)
Diverter valve set to DHW mode
Internal extension output enabled
Solar circuit pump sF output at solar control module SM1 ena-
bled
Solar circuit pump output at solar control module SM1 switched
to minimum speed
Solar circuit pump output at solar control module SM1 switched
to maximum speed
Output sS at solar control module SM1 enabled
Contact P - S on plug aBJ for extension EA1 closed
Output A1 at extension AM1 enabled
Output A2 at extension AM1 enabled
Diagnosis and service scans
(cont.)
4. Confirm selected actuator with OK.
The display shows the number for the
activated actuator and "ON".
89