Originally Posted by dorothyt7
Timing of this thread is amazing - I have the exact opposite problem on my 1995 SMB. And hoping someone has some ideas.
Starcool is NOT cooling on shore power (fan runs but not cold air). It does run well when engine is running.
Things already checked....
- There is no 12v going to the solenoid to close it when the engine is not running. The solenoid itself was tested separately and is working (opens and closes)
- Emptied and recharged freon and have enough (4lbs per starcool label)
I'll take a look at the manuals but in the mean time though someone might what controls the 12v power to the solinoid?
One possibility is that there is not sufficient voltage at the battery to start the compressor. As the battery ages, and even with a big alternator, the amperage draw to start the Starcool which can exceed 30 amps, is not available from the House battery. Try running your Starcool on a 15 amp supply; I suspect you will get the same result as running it from engine alternator supply as the 12v has to go through the same battery.