Ariston microCombi Servicing Instructions page 19

IS THE PUMP
NO
RUNNING?
YES
Supplied By www.heating spares.co Tel. 0161 620 6677
POWER TO
NO
THE PUMP?
YES
1 - Check that the pump
is not stuck
2 - Release/replace pump
1 - Check system pressure
2 - Check pump cable.
3 - Check/replace P.C.B
19