Gas Type Conversion (Only For Operation With Lpg); Function Sequence And Possible Faults - Viessmann Vitodens 333-F Service Instructions Manual

Further details regarding the individual steps

Gas type conversion (only for operation with LPG)

Function sequence and possible faults

Control unit is-
sues heat de-
mand
Yes
Fan starts
Commissioning, inspection, maintenance
1. Set adjusting screw A at the gas
train to "2".
2. Switch ON/OFF switch "8" ON.
3. Adjust the gas type in coding
address "82" (for a detailed
description of the individual steps,
see page 97):
&
&
&
&
&
4. Open the gas shut-off valve.
5. Affix label "G31" (included with the
technical documentation) above
label "G20/G25" on the cover.
Display screen
No
after approx. 51 s
No
fault F9
(cont.)
Call up code 2
In coding address "11", select
value "9"
In coding address "82", select
value "1" (operation with LPG)
In code "11" select value ≠ "9".
Terminate code 2.
Measures
Increase set
value and ensure
heat is drawn off
Check the fan, fan
connecting
cables, power at
the fan and fan
control
15