Check Switch For Domestic Hot Water - Vaillant VCW 2O Instructions For Installation And Servicing

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9.5 Sheet 5: Gheck Switch for Domestic Hot Water
(Heating Switch in position "O" do not use domestic hot Water)
Go to sheet 2
Can Pilot be lit?
-Does Pilot
lamp in Main
Switch give
1
light? -
Set Switch for
Domestic Hot Water
to position I
Device (Ret. to note 2)
and check connections
n if no voltaqe 240 V
from lermin;l 5 to 4.
Check Micro Switch M1
by drawing hot water.
Micro Switch M1 has to
be actuated (closed) bv
Switch Lever. Observ6
piston rising! Adjust or
Micro Switch M 1
no voltage 240 V AC
from terminal 4 to 5
Bel. to note 12
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