Skipping Fault Messages - Viessmann Vitocal 200-G Installation And Service Instructions Manual

Control unit diagnostics
Scanning all stored ("historic") fault messages
Menu item
& "Information"
& "Statistics"
& "Fault history"
– Press "TIME", to display the time
of the fault occurrence
– Press "FAULT" to return to the
fault description.

Skipping fault messages

To enable adjustments/scans at the
control unit:
1. Open the programming unit flap. All
current fault messages will be dis-
played.
Displaying fault messages
Note
The sensor resistance curves required for testing the sensors are on page 173.
Fault messages
System fault
10 Outside tempera-
ture sensor
18 Outside tempera-
ture sensor
20 Sec. flow sensor
28 Sec. flow sensor
30 Primary in sen-
sor
38 Primary in sen-
sor
(cont.)
& "BACK"
Note
The fault messages cannot be
acknowledged in the fault history.
2. Press "BACK".
The main menu will be displayed.
You can now make adjustments
and scans.
Cause
Control unit processor
faulty
Short circuit
Lead broken
Short circuit
Lead broken
Short circuit
Lead broken
Troubleshooting
Measures
Replace programming unit
Check the sensor; replace if
required
Check the terminals; replace
the sensor, if required
Check the sensor; replace if
required
Check the terminals; replace
the sensor, if required
Check the sensor; replace if
required
Check the terminals; replace
the sensor, if required
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