Viessmann Vitotronic 200 Installation And Service Instructions For Contractors page 98

Troubleshooting
Fault messages
(cont.)
Cause
connection at S3 of the Vitosolic
94 Short circuit, cylinder temperature sensor, solar
No solar DHW heating
Cause
Short circuit, cylinder temperature sensor,
connection of temperature sensor
module, type SM1 or sensor at S2 of the Vitosolic
98 Lead break, sensor 7, solar control module, type SM1
Control mode
Cause
Lead break, temperature sensor
connection at solar control module, type SM1
99 Lead break, sensor 10, solar control module, type SM1
Control mode
Cause
Lead break, temperature sensor
connection at solar control module, type SM1
9A Lead break, collector temperature sensor
No solar DHW heating
Cause
Lead break, collector temperature sensor,
connection of temperature sensor
module, type SM1 or sensor at S1 of the Vitosolic
9B Lead break, return temperature sensor, collector
Control mode
Cause
Lead break, temperature sensor,
connection at S3 of the Vitosolic
9C Lead break, cylinder temperature sensor, solar
No solar DHW heating
98
Measure
Measure
Check sensor at the solar control unit (see separate in-
at solar control stallation and service instructions).
%
Measure
, Check temperature sensor
/
(see separate installation and service instructions).
Check parameter "20" in the "Solar" group.
Measure
, Check temperature sensor
aÖ
(see separate installation and service instructions).
Check parameter "20" in the "Solar" group.
Measure
Check sensor at the solar control unit (see separate in-
at solar control stallation and service instructions).
&
Measure
Check sensor at the solar control unit (see separate in-
stallation and service instructions).
at the solar control unit
/
at the solar control unit
aÖ