Ariston ecoCOMBI 27 MFFI Installation And Servicing Instructions page 54

Model 27 MFFI/27RFFI System
A
IS THE
PUMP RUNNING?
YES
1. Check if there is air in
2. Check the main circuit flow
3. Check the pressure on the
B
54
NO
NO
the system
switch operation
water gauge and fill system
to 1 bar
YES
Push the
RESET button
POWER TO
THE PUMP?
YES
IS
THE PUMP
PRESSURE SWITCH
WORKING CORRECTLY?
E01: does not close
YES
Release/replace
pump
NO
1. Check pump cable
2. Check/replace
main P.C.B.