Re: Slide problems
Reply #4 –
If there's an issue with the air tank solenoid (which connects the aux compressor to the main tanks), it will likely show up in your Tank A and Tank B pressures increasing with the aux compressor running.
With the switch off (which it should almost always be), turn the ignition to accessory but don't start the coach. All you want is for the display on the Driver Info Center to light up and show you Tank A and B pressures. Watch them when the aux compressor is running. If they go up, the switch or solenoid is allowing leak through.
That said, you mention the aux compressor running all the time. Can you feel or hear air at the bottom of the condensate bowl? That NO solenoid gets debris on the plunger seat and the plastic bowl itself develops heat stress cracks from thermal cycling. The cracking is normally at the fittings at the bottom of the plastic bowl where the solenoid valve screws in. Either of these could cause the aux compressor not to build adequate pressure and cause it to run all the time.
One other member recently had the compressor's head seal fail. Older compressors used a paper gasket. Newer ones use an o-ring/rubber gasket. It's not a common failure, but you can't rule anything out.