2006-2007 HWH factory defect
I discovered the automatic air purge valve that is attached to the bottom of the dryer bowl to be wired powered on. (note; this bypasses the house switch, wired directly to the house battery, draws 6 watts). In fact it has been powered on for 12 years.
I needed a new solenoid ($189) so I called Greg at Country Coach and told him the story and he said a number of units got wired wrong, did not know if it was a HWH issue, as the assembly comes pre-wired or what.
It is supposed to be powered on only when the compressor is running, when off it releases the air and blows out any accumulated water.
To test yours, just feel the solenoid, if warm it is wired wrong. It is easy to fix just move the power wire to the other terminal on the relay. You will need to dissemble the bracket.
Here is a picture. I added the tubing to blow air out the bottom of the floor.
Mine was always warm... flipped the wires and all good now.
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
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.
By golly cool to the touch...now I have time to work on all the other stuff.
Thanks a bunch.
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