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B063
IS THE PUMP
RUNNING?
YES
NO
NO
NO
YES
YESYES
POWER TO
THE PUMP?
DOES THE
"NO WATER" L.E.D.
ILLUMINATE
(WITHIN 40 SECS)?
1 - Check if there is air in the
system
2 - Check main circuit flow switch
operation
3 - Check pressure on the water
gauge and fill system to return
to 1 bar
1 - Turn the boiler off then on
(protection reset)
1 - Check that the pump
is not stuck
2 - Release/replace pump
1 - Check pump cable
2 - Check/replace P.C.B.
3 - Check main flow main
switch operation when
drawing D.H.W.
A
B
FC004Ab