First of all I can confirm that the Electric Heat Strip for Advent Air RV Air Conditioners - 5,500 BTU item # ACMHD is the correct unit for the Advent Air RV Air Conditioner - 13,500 Btu - White item # ACM135. It sounds like your A/C unit is pulling to much power or has a fault somewhere in the wiring. I recommend looking for any faults in your wiring and check for lose connections. You could also have a bad breaker that needs to be replaced. view full answer...
The best place to start looking when you have wiring issues are your grounds. It is possible that you have a bad ground which is cause this excessive heat you mentioned. Make sure they are all securely connected to a clean, bare-metal surface as even paint can be a problem.
After replacing any damaged wiring and fixing any ground or connection issues let me know if you are still having problems and I can help you troubleshoot further. view full answer...
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