roof A/C TRIPS 20 AMP BREAKER
WORKING ON ROOF A/C it runs and is cold for about 15 to 20 minutes and then it trips the 20amp breaker that it is connected to. trailer breaker box. I was thinking possibly I should use a 30 amp break...
Forum Discussion
Have you tried running the AC on your generator -that may help isolate the problem.
If the unit runs fine on generator then you have an issue with shore power ... source, extension cord etc.
When I have AC issues I start with cleaning the filters and both the Condenser and Evaporator coils. The Evaporator coils are often ignored because they are under a metal cover on the front of the AC unit - you need to get up top and remove the housing and a number of sheet metal screws to get access. Common problem - use Google to get info on how to clean the Evaporator coil. Cleaning all the coils will help reduce electric load on unit.
If issue continues after cleaning .. then look at the capacitors - if they smell or bulge then replace. If your rigs old replace because they are dirt cheap. If problem continues after replacement of capacitors then it maybe your compressor and the cost of replacing that usually warrants replacement of entire AC.
If the unit runs fine on generator then you have an issue with shore power ... source, extension cord etc.
When I have AC issues I start with cleaning the filters and both the Condenser and Evaporator coils. The Evaporator coils are often ignored because they are under a metal cover on the front of the AC unit - you need to get up top and remove the housing and a number of sheet metal screws to get access. Common problem - use Google to get info on how to clean the Evaporator coil. Cleaning all the coils will help reduce electric load on unit.
If issue continues after cleaning .. then look at the capacitors - if they smell or bulge then replace. If your rigs old replace because they are dirt cheap. If problem continues after replacement of capacitors then it maybe your compressor and the cost of replacing that usually warrants replacement of entire AC.
