Viessmann VITOTRONIC 200 Service Instructions Manual page 45

Messages
(cont.)
Message
Code/system characteris-
tics
54 Cylinder sensor solar
No solar DHW heating,
solar circuit pump
remains off.
58 Cylinder sensor top
No DHW heating.
5A Cylinder sensor bottom
Operation with tempera-
ture value of top cylinder
temperature sensor.
DHW heating is blocked
if only one sensor is
installed or both sensors
are faulty.
5C Cylinder sensor solar
No solar DHW heating,
solar circuit pump
remains off.
60 Buffer temp. sensor
Buffer cylinder is heated
once every hour. Shut-
down according to set
return temperature.
Cause
Short circuit, Vitosolic
temperature sensor.
Note
Not in conjunction with
integral solar control
function.
Lead break, top cylinder
temperature sensor.
Lead break, bottom cyl-
inder temperature sen-
sor.
Lead break, Vitosolic
temperature sensor.
Note
Not in conjunction with
integral solar control
function.
Short circuit, buffer tem-
perature sensor.
Troubleshooting
Measures
Check temperature sen-
sor on the Vitosolic and
replace if required (see
Vitosolic installation and
service instructions).
Check resistance (Pt 500)
at plug-in connection F6 or
terminals X6.1/X6.2 (see
page 172); replace sen-
sor if required.
Check resistance (Pt 500)
at plug-in connection F7
(see page 172); replace
sensor if required.
Check temperature sen-
sor on the Vitosolic and
replace if required (see
Vitosolic installation and
service instructions).
Check resistance (Pt 500)
at plug-in connection F4 or
terminals X5.6/X5.7 (see
page 172); replace sen-
sor if required.
45