When arriving at the customers house, I performed a leak check on their geothermal. I checked all the lines coming off the compressor. I found no leaks coming from there but when I started to check the coil, it started beeping 99%. I took it away put it on medium setting and it beat and I took it away again on low setting and it beat as well. I confirmed the unit not fit to be replaced. I gave a couple estimates to the customer.