Troubleshooting Steps; Overview Of Controls And Indicators - Viessmann VITODENS 100-W WB1B Series Installation And Service Instructions Manual

Troubleshooting

Troubleshooting Steps

Diagnosis
Correction
Start-up and Maintenance

Overview of Controls and Indicators

Fig. 64
Fig. 65
62
1. Establish fault message or
diagnose behavior of system.
2. Look for corresponding cause of
fault in the diagnostics table.
3. Find corrective measures in the
table.
4. Perform corrective measures (page
65 & 66).
Legend
A Pressure gage
B LCD display
C "
" Selector dial for service
setting (for instsaller/service
personnel only)
D "tr" Selector dial for boiler
water temperature
E ON / OFF switch
Controls and indicators are located
behind the hinged front cover. Flip up
the front cover to access the controls.
See Fig. 64.
Note:
When the boiler is initially turned on,
a self-diagnostic check is initiated.
Wait until the temperature display
is stabilized and the boiler's actual
temperature is displayed.
Control and display elements
The control unit is preset at the
factory for standard operation. Your
heating system is ready for use. The
factory presets may be individually
adjusted to suit your specific
requirements.