54
YES
YES
NO
IS THE
PUMP RUNNING?
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
1. Check pump cable
2. Check/replace
main P.C.B.
Release/replace
pump
Push the
RESET button
POWER TO
THE PUMP?
YES
YES
IS
THE PUMP
PRESSURE SWITCH
WORKING CORRECTLY?
E01: does not close
NO
NO
A
B
Model 27 MFFI/27RFFI System