Fault Finding; Check Of Flame Failure Device And Thermocouple - Vaillant VCW 2O Instructions For Installation And Servicing

9 Fault Finding
9.1 Sheet 1: Check of Flame Failure Device and Thermocouple
b
Push green button
and light Pilot.
rs gas
pressure
available?
Can Pilot be lit?
De-aerate Pilot Gas
Pipe by unscrewing
Pilot Adlustmdnt
Screw.
ls Pilot
Gas Pipe
de-aerated?
Check or clean, if
necessary, Pilot Gas
Filter and Pilot Jet.
Check Pilot flame correct
size. Check Thermo'
Tip isclean. Check
Dositioned in flame.
Recitify any fault.
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