Dometic A/C Problem

[Salty Bob]

I own a 2016 Forest River Vibe 250 BH. The blower stopped working on the Dometic a/c, so I purchased a new one and installed it. Now the blower works but when the temp setting is reached, the blower shuts off and the compressor stays running. I had a mobil rv service come out and they replaced the relay box above the filter, the thermostat control and ran a ground wire from blower to the relay box. It worked while they were here but is now doing the same thing as before. Any advice would be helpful. Thanks, Bob