90
68 Lead break, temperature sensor 17A
Boiler with maximum temperature, no output reduction,
mixing valve for return temperature control open
towards the system
Cause
Measure
Lead break, temperature sensor
aJ
A
Check the temperature sensor: See chapter "Checking
temperature sensors"
Without temperature sensor:
Set parameter "51:0" in the
"General"
group.
70 Short circuit, temperature sensor 17B
■
Shunt pump constantly ON
■
With cylinder loading system:
Close 3-way mixing valve; no DHW heating
Cause
Measure
Short circuit, temperature sensor
aJ
B
Check the temperature sensor: See chapter "Checking
temperature sensors"
78 Lead break, temperature sensor 17B
■
Shunt pump constantly ON
■
With cylinder loading system:
Close 3-way mixing valve; no DHW heating
Cause
Measure
Lead break, temperature sensor
aJ
A
Check the temperature sensor: See chapter "Checking
temperature sensors"
Without temperature sensor:
Set parameter "51:0" in the
"General"
group.
90 Short circuit, sensor 7, solar control module, type SM1
Control mode
Cause
Measure
Short circuit, temperature sensor
/
,
connection at solar control module, type SM1
Check temperature sensor
/
at the solar control unit
(see separate installation and service instructions).
91 Short circuit, sensor 10, solar control module, type SM1
Control mode
Cause
Measure
Short circuit, temperature sensor
aÖ
,
connection at solar control module, type SM1
Check temperature sensor
aÖ
at the solar control unit
(see separate installation and service instructions).
92 Short circuit, collector temperature sensor
No solar DHW heating
Troubleshooting
Fault messages
(cont.)
5863679
Diagnosis
Summary of Contents for Vitotronic 11 CC1E
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