Lead Break, Sensor 10, Solar Control Module, Type Sm1 - Viessmann VITOTRONIC 300 Installation And Service Instructions Manual

Fault messages
(cont.)

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
Cause
Lead break, cylinder temperature sensor,
connection of temperature sensor
module or sensor at S2 of the Vitosolic
9E Delta T monitoring, solar control unit
Control mode
Cause
No flow rate in solar circuit or flow rate too low, or tem-
perature limiter has responded.
9F Solar control unit
Control mode
Cause
Fault, solar control module, type SM1 or Vitosolic
Displayed if a fault occurs at these devices that has no
fault message in the Vitotronic.
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).
Measure
Check sensor at the solar control unit (see separate in-
at solar control stallation and service instructions).
%
Measure
Check solar circuit.
Acknowledge fault message (see separate installation
and service instructions).
Measure
Check solar control unit (see separate installation and
service instructions).
Troubleshooting
at the solar control unit
aÖ
123