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A
IS THE
NO
NO
PUMP RUNNING?
YES
YES
NO
NO
1. Check if there is air in
the system
2. Check the main circuit flow
switch operation
3. Check the pressure on the
water gauge and fill system
to 1 bar
Turn the
ON/OFF Control Knob
B
POWER TO
THE PUMP?
YES
YES
IS
THE LOW WATER
PRESSURE SWITCH
WORKING CORRECTLY?
E02: does not reset
YES
YES
Release/replace
pump
YES
YES
NO
NO
1. Check pump cable
2. Check/replace
main P.C.B.
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