114
Brief scan
Display
F
8
Solar cen-
tral heating
backup
0: Disabled
1: Enabled
Output 22
switching
state
0: OFF
1: ON
Open Therm extension (if installed)
F
9
Software
version
DHW heat-
ing status
External hook-up 0 - 10 V
Display in %
Checking outputs (relay test)
Weather-compensated control unit
1.
Press
OK
and
å
simultaneously
for approx. 4 s.
2. "Actuator test"
The following relay outputs can be controlled subject to system design:
Display
Explanation
All actuators
Off
All actuators are off
Base load
On
Burner operated at minimum output; circulation
pump is started
Full load
On
Burner operated at maximum output; circulation
pump is started
Output, internal
On
Output
sÖ
active (boiler circuit pump)
Output 21/28
On
Output
sA
active (circulation pump for cylinder heat-
ing)
Htg circ pump
HC2
On
Heating circuit pump output enabled (extension to
heating circuit with mixer)
Mixer HC2
Open
"Mixer open" output enabled (extension to heating
circuit with mixer)
Mixer HC2
Close
"Mixer close" output enabled (extension to heating
circuit with mixer)
Htg circ pump
HC3
On
Heating circuit pump output enabled (extension to
heating circuit with mixer)
Diagnosis and service scans
Diagnosis
(cont.)
5623 520 GB
