Earth fault.

Still trying to locate an intermittent earth fault going on for a month since first reported. But I think I might have narrowed it down.

I have read of detectors causing earth faults. But has anybody actually had this happen.

I ask because I suspect a smoke detector xp95 is the issue . It is close to an air con unit that was leaking water at one point. When previously checked all wiring looked fine . Could it be the module condensing or rapid change of temperature affecting it.

Cheers