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

Troubleshooting

Troubleshooting Steps

Diagnosis 1. Establish fault message or diagnose behavior of system.
2. Look for corresponding cause of fault in the diagnostics table.
Diagnosis
3. Find corrective measures in the table.
Correction 4. Perform corrective measures (page 65 & 66).

Overview of Controls and Indicators

Fig. 62
A
2
1 3
0 4
Fig. 63
62
B
r 1 6 9
ºF
A
Legend
Pressure gage
LCD display
" " Selector dial for service
setting (for instsaller/service
personnel only)
"tr" Selector dial for boiler
water temperature
ON / OFF switch
Controls and indicators are located
behind the hinged front cover. Flip up
the front cover to access the controls.
See Fig. 63.
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.
C D
tr
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.
E