On Tue, 06 Dec 2016 21:44:01 +0000, Tom
m wrote:

I have a new furnace and a condensate pump the code requires the pump to be on
a gfci so they installed a combination switch receptacle the receptacle is
gfci the switch is not the pump is the only thing on the gfci they replaced
the pump and it still trips any thoughts?

Inspect the wiring and be sure there is nothing touching the enclosure
or the ground (hot or neutral)
If you have a meter, be sure you have no continuity between the motor
leads and ground (with it disconnected from the hot and neutral)