Checking Outputs (Relay Tests) - Viessmann VITODENS 222-F Service Instructions Manual

Troubleshooting

Checking Outputs (relay tests)

1. Press OK and simultaneously for approximately
4 seconds
2. "Actuator test"
The following relay outputs can be controlled subject to system design:
Display
All actuators off
Base load
Full load
Output, internal
Valve
Valve
Valve
Htg circ pump HC2
Mixing valve HC2
Mixing valve HC2
Htg circ pump HC3
Mixing valve HC3
Mixing valve HC3
Outp. int. exten. H1
AM1 output 1
AM1 output 2
EA1 output 1
Output 21
EA1 output 1
68
Explanation
All actuators are off
On Burner operated at minimum output; internal circulation pump is started.
On Burner operated at maximum output; internal circulation pump is started.
On
Output sÖ active (boiler internal pump).
Heating Diverter valve set to heating mode.
Center Diverter valve in central position (filling/draining).
DHW Diverter valve set to DHW mode.
On Heating circuit pump output enabled (extension to heating circuit with mixing valve).
Open "Mixing valve open" output enabled (extension to heating circuit with mixing valve).
Close "Mixing valve close" output enabled (extension to heating circuit with mixing valve).
On Heating circuit pump output enabled (extension to heating circuit with mixing valve).
Open "Mixing valve open" output enabled (extension to heating circuit with mixing valve).
Close "Mixing valve close" output enabled (extension to heating circuit with mixing valve).
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 aBJ of extension EA1 closed.
On DHW circulation pump (internal pump)
On Heating circuit A1 (programmable pump output)
Vitodens 222-F B2TB 19 and 35 Service