Ignition inop A320

[Speedwinner]

Hello guys,

Recently had two different aircraft with nearly the same fault: one time ignition a fault and one with ignition b fault. Both times the mel says you can do a manual start or an automatic start with the ignition a CB pulled. But times you pull the ignition a CB . Can someone explain that to me? Didn't find a ignition b CB in the cockpit

Thanks

[Metro man]

IAE or CFM ?

[Speedwinner]

Cfm was it. A319

[QA1]

Think you will find 4 off c/b's on 121VU:

Eng 1 sys B
Eng 2 sys B
Eng 1 Bat
Eng 2 Bat

[QA1]

On checking the MMEL, on CFM aircraft if igniter A is u/s it is a no-go.
2 installed 2 required.

Does mention that it is possible to swap inputs / outputs at the igniter box if it ensures system A is operative.