mh3860sh Report post Posted July 27, 2023 when starting up one of our dometic duo therm a/c units it will run for a while. yesterday it ran for 6 hours. then it tripped the breaker. this problem started about 3 weeks ago. since that time i have replaced the fan/run capacitor and the motor capacitor. does anyone have an idea what i should look for next? Share this post Link to post Share on other sites
rossboyer Report post Posted July 27, 2023 If you have an clamp amp meter, check to see if the load is very close to the rating of the breaker. If so, you may need to replace the breaker. Share this post Link to post Share on other sites
wildebill308 Report post Posted July 27, 2023 How old is the unit? How was the power coming in to the pedestal? I have run into when the load increases in the park or on the system it will lower the voltage. I would do what Ross said. Bill Share this post Link to post Share on other sites
bm02tj Report post Posted July 29, 2023 The condenser may be dirty enough to raise head pressure and amperage Share this post Link to post Share on other sites
