87
Display
Explanation
"Valve"
"Heating"
Diverter valve set to heating mode
"Valve"
"Middle"
Diverter valve in central position (filling/draining)
"Valve"
"WW"
Diverter valve set to DHW heating
"Heating circuit pump
HC2"
"ON"
Heating circuit pump output active (extension to heating circuit with
mixer)
"Mixer HC2"
"Open"
"Mixer open" output active (extension to heating circuit with mixer)
"Mixer HC2"
"Closed"
"Mixer close" output active (extension to heating circuit with mixer)
"Heating circuit pump
HC3"
"ON"
Heating circuit pump output active (extension to heating circuit with
mixer)
"Mixer HC3"
"Open"
"Mixer open" output active (extension to heating circuit with mixer)
"Mixer HC3"
"Closed"
"Mixer close" output active (extension to heating circuit with mixer)
"Output, internal H1
extension"
"ON"
Output at internal extension active
"Solar circuit pump"
"ON"
Solar circuit pump output
sF
on solar control module SM1 active
"Solar circuit pump
min."
"ON"
Solar circuit pump output on solar control module SM1 switched to
minimum speed
"Solar circuit pump
max."
"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
"EA1 output 1"
"ON"
Contact P - S at plug
aBJ
of EA1 extension closed
"AM1 output 1"
"ON"
Output A1 at AM1 extension active
"AM1 output 2"
"ON"
Output A2 at AM1 extension active
"Output 28"
"ON"
If available: Internal output
sK
(DHW circulation pump) active
Diagnosis and service scans
Checking outputs (actuator test)
(cont.)
5778741
Diagnosis