Technical data

Vitodens 200-W B2HA 19, 28, 35 Service
5683 702 - 07
70
Checking Outputs (relay test)
Troubleshooting
1. Press OK and simultaneously for approximately
4 seconds
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 DHW tank heating).
Htg circ pump HC2 On Heating circuit pump output enabled (extension to heating circuit with mixing valve).
Mixing valve HC2 Open “Mixing valve open” output enabled (extension to heating circuit with mixing valve).
Mixing valve HC2 Close “Mixing valve close” output enabled (extension to heating circuit with mixing valve).
Htg circ pump HC3 On Heating circuit pump output enabled (extension to heating circuit with mixing valve).
Mixing valve HC3 Open “Mixing valve open” output enabled (extension to heating circuit with mixing valve).
Mixing valve HC3 Close “Mixing valve close” output enabled (extension to heating circuit with mixing valve).
Outp. int. exten. H1 On Output at internal extension enabled.
AM1 output 1 On Output A1 at extension AM1 enabled.
AM1 output 2 On Output A2 at extension AM1 enabled.
EA1 output 1 On
Contact P - S at plug aBJ of extension EA1 closed.
Solar circuit pump On
Solar circuit pump output sF on solar control module SM1 active.
Solar circuit pump
minimum
On Solar circuit pump output on solar control module SM1 switched to minimum
speed.
Solar circuit pump
maximum
On Solar circuit pump output on solar control module SM1 switched to maximum
speed.
SM1 output 22 On
Output sS on solar control module SM1 active.