Viessmann VITOSOLIC 200 Installation And Service Instructions Manual page 89
Electronic temperature differential control unit
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Also See for VITOSOLIC 200:
- Installation and service instructions manual (92 pages) ,
- Operating instructions manual (16 pages) ,
- Operating instructions for the system user (16 pages)
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Fault messages
Displayed faults
"Messages:"
"Fault"
!Interruption
>Sensor <
!Sensor circuit
>Sensor <
?Night circ.
Note
A central fault message
facility that may be connec-
ted to relay R7 will not be
switched ON.
?ΔT too high
See information above.
!EEPROM
!Processors
!SD module fault
SD fault
(cont.)
Cause
The sensor has suffered a
break
The sensor has suffered a
short circuit
Recirculation via gravity
Circulation pump faulty.
Message only if solar
heating takes place for
longer than 20 min at a
temperature differential
between collector and
consumer greater than
50 K.
Internal fault.
Display cause of the fault:
Press OK (see
page 147).
Troubleshooting
Remedy
Check the sensor con-
cerned (see page 92).
Check the sensor con-
cerned (see page 92).
Check any installed non-
return damper (Solar-Divi-
con) or install one.
Check pump connection
and pump.
Switch solar control unit
OFF and ON again after a
brief interval. Check all set-
tings. If the fault recurs,
replace the solar control
unit.
See page 147.
89
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