The normal AFCI is not listed as a Class A GFCI and can't be used for that purpose. I think that C-H does have a combo AFCI/GFCI and that could be used. If it is a standard AFCI, I'm surprised that the GFCI tester is tripping it. The GFP circuit in the AFCI is set for 30 to 50 mA. The test current in the AFCI tester should be less than 10 mA. Don
