12 volt issue shutting of my overhead AC's
1997 Gulf Stream Scenic Cruiser. When AC's are running, If I turn on a 12 volt light it shuts the it shuts them off. I'm pretty sure it's both and maybe it might be one ac on 1 occasion (just purc...
Forum Discussion
It does sound like an sudden voltage drop.
If you have a power distribution system there are 12V relays that control the compressors on the AC.
If it is the overhead with internal controls many have a 12V control board, If you have wall thermostats they require 12V.
When you say "shut off" do the units shut down or do the compressors shut down and the fans continue to run.
The compressor has a safety device that will prevent the compressor to cycle back on (usually set from 3 to 6 minuets) to allow the compressor head pressure to drain down so that is normal.
If you have a power distribution system there are 12V relays that control the compressors on the AC.
If it is the overhead with internal controls many have a 12V control board, If you have wall thermostats they require 12V.
When you say "shut off" do the units shut down or do the compressors shut down and the fans continue to run.
The compressor has a safety device that will prevent the compressor to cycle back on (usually set from 3 to 6 minuets) to allow the compressor head pressure to drain down so that is normal.
