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Topic: HWH (Read 202 times) previous topic - next topic

HWH

I've had this happen twice now. When trying to level the coach with the engine running apparently the HWH system commands the DC compressor to run even though it's already at pressure and causes it to cycle the pressure relief valve until I pull the power or hit the emergency stop on the HWH panel. After getting the coach level I re-established power to the compressor and it stayed off. I bled the HWH tank until the compressor started and it pressured up normally and shut off. I'm stumped.
2008 Nimbus 342
Build# 6464
ISM 500
Allison 4000 w/retarder
2021 Jeep Grand Cherokee

Re: HWH

Reply #1 –
Do you have an "air tank" switch by the driver's elbow and is it OFF (it should be)? 

If OFF, it could be a failed check valve in the aux compressor plumbing to the air tank switch solenoid line preventing the 2 systems from being isolated or the air tank switch solenoid or valve itself weak or failed or has debris on the valve seat/face.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320