Viessmann VITOLADENS 300-W Installation And Service Instructions Manual page 94

Diagnosis and service scans
Checking outputs (relay test)
Display
Heating circ
pump HC3
Mixer HC3
Mixer HC3
Outp. int. exten.
H1
AM1 output 1
AM1 output 2
EA1 output 1
Solar circuit
pump
Solar circ pmp
min
Solar circ pmp
max
SM1 output 22
94
Explanation
ON Heating circuit pump output enabled (extension to
heating circuit with mixer)
Open "Mixer open" output enabled (extension to heating
circuit with mixer)
Close "Mixer close" output enabled (extension to heating
circuit with mixer)
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 Solar circuit pump output sF on solar control module
SM1 active
ON Solar circuit pump output on solar control module
SM1 switched to minimum speed
ON Solar circuit pump output on solar control module
SM1 switched to maximum speed
ON Output sS on solar control module SM1 active
(cont.)