Air Conditioning Malfunction?
I have a 2017 Newmar Ventana LE which, due to warranty and repair issues, has not seen weather requiring the use of my a/c system, and until this past weekend, had no need to use it. However, a campin...
Forum Discussion
obiwancanoli wrote:
OK, here's a new development... I'd been trying the a/c a few times since my initial post, withalways the same results - no a/c... listening for the compressor(s) to come on, and it never did... So, today, I'm back in the same situation, only this time, I'm watching the display on the control unit, which for a Dometic unit, shows "E7" - an error code... so I look up the error code, and the manual states as follows: "Loss of 120 Vac power to all power module boards on the system. The system will shut down."
Now, I've checked the circuit breaker (20A), turned it off, then back on again...still no a/c... what else should I be checking?
E7 means there is NO 120 volts at the AC control board. Does NOT mean there is a problem with your Circuit Breaker. So, when this happens you do reset the AC circuit Breaker. Then if E7 remains you check the bottom of the 20 amp breaker to make sure power is present and the wire is connected and/or not burnt loose. IF OK, then you have to go to the upper AC control board and check the 120 wire connections at the Board housing. It is probably as simple as a loose 120 volt wire nut . Doug
