26
Mynute
FAULT FINDING TEST ‘D’ (Mynute 28e-35e): turn the selector to the “on” position
START
Does
burner light
Does burner
stay light
NO
YES
END
YES
Is spark
electrode ok
YES
YES
NO
Is there
230V between
1 & 2 of
ignition PCB
Is there
230V between
gas valve
YES
YES
Replace
ignition PCB
NO
Check wiring &
connections
Is gas valve
ok
NO
NO
YES
Replace gas
valve
Check gas
Is ionisation
voltage ok
NO
YES
Replace
ignition PCB
NO
Replace spark
electrode
Replace spark
electrode
FAULT FINDING TEST ‘E’ (Mynute 28e-35e): turn the selector to the “on” position
START
Is there
230V between
terminals
M14.1 &
M14.2
NO
NO
Replace main
PCB
Check wiring &
connections
YES
Is there
230V between
4 & 5 on
ignition PCB
Is there
230V between
4 & EARTH
NO
NO
Replace
ignition PCB
YES
YES
Is spark
electrode and
spark gap ok
NO
YES
Replace spark
electorde
Replace ignition
transformer