Originally Posted by Jethdlr
Went out and just about got a great big burn blister off mine. I switched the two wires from the solenoid on the bottom of the glass bowl.
Still heats up with everything depowered. Did I switch the correct wires? Or do
I have another issue? Appreciate the help.
2007 CC Inspire 360 Sienna 36'
Cummins ISL 425HP
No, switching the wires does not fix it. I will use the word "solenoid" for the device at the bottom of the glass bowl and "relay" that powers the Air pump.
You have to move the non grounded wire of the solenoid to the other terminal on the relay, a larger terminal connection.
The relay switches on and off the air pump. There are 4 wires to the relay. One goes to ground that's obvious. One goes to the air pump and probably has a fuse in line with it. This will be a larger terminal. That is where you need to connect the non grounded wire from the solenoid. The third wire is smaller in gauge and goes to the HWH controller and has power only when the air pump is running, this wire powers the relay.
The fourth wire has constant battery power and should be a larger gauge wire. This is where your solenoid is connected now and why it is hot. Be careful, do not short out this wire or disconnect the battery.
Basically, the solenoid is powered on only when the air pump is running. When powered on the air valve in the solenoid closes and pressure builds. When the pump goes off it releases air and discharges and moister in the bowl.
You will need unmount the water separator, the relay is on the back side to make connection changes.