80
The following actuators (relay outputs) can be controlled subject to system design:
Display
Explanation
0
All actuators have been switched off.
1
Burner operates at minimum output; internal pump starts.
2
Burner operates at maximum output; internal pump starts.
3
Internal output
sÖ
active (internal circulation pump)
4
Diverter valve set to heating mode
5
Diverter valve in central position (filling/draining)
6
Diverter valve set to DHW heating
10
Output
sÖ
/
sK
at internal H1/H2 extension enabled
19
Contact P - S at plug
aBJ
of EA1 extension closed
20
Output A1 at AM1 extension active
21
Output A2 at AM1 extension active
22
Internal output
sA
active (circulation pump for cylinder heating)
Diagnosis and service scans
Checking outputs (actuator test)
(cont.)
5773 216 GB
Diagnosis
Summary of Contents for B2TA
Page 101: ...101 Parts lists Overview of assemblies 5773 216 GB Components ...
Page 107: ...107 Parts lists Hydraulics 5773 216 GB Components ...
Page 118: ...118 0004 0002 0005 0006 0001 0003 Fig 77 Parts lists Miscellaneous 5773 216 GB Components ...
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