Hot Tub Help
Am not an electrician and did not stay at a Holiday Inn last night. I have a Beachcomber hot tub that has given us 7 trouble free years until today. Of course no one in the state sells or services them anymore. Was out doing yard work and noticed it was dead silent. No motor running, no heater heating just dead. Checked the circuit breaker/gfi and it was tripped. Reset it and the 120v control panel on the tub had power but nothing else. 240v motors would not run nor the heater. I checked the supply power before the gfi in the panel and had 120v on both legs checking it with a meter. The output from the gfi was 120v on one leg and 20v (not a misprint) on the other. Eureka, I found the problem! Not so fast, replaced the $95 dual 50a gfi breaker and it now trips immediately when I turn it on. I am certain I wired the exact same GE breaker in the exact same way. Can't check the output voltage since it trips immediately. Hot tub manual says this can be caused by the water heater leaking current, or the gfi is worn/defective.
Is there any way to test a gfi? The original that had the bad voltage reading would semi-power the hot tub (120v only) but the press to test did not work. This new gfi trips immediately.
Thankful for any input,