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Old 09-24-2020, 10:45 AM   #1
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HWH leveling system - No Power after batteries (

My 2004 Monaco Dynasty 42' -- Have had Cranking batterys drain and going dead overnight and when batteries went dead the Coach Rt. Side lost leveling and raised up then there is no power on leveling system panel and warning red light is on and remains lit so no functions will work to operate HWH air Leveling.
Really have two problems -- Battery and Leveling System. Have charged batteries several times and they drain very quickly but leveling probem just started on last battery drained. Plan to start battery drain diagnosis next. and have read manuel so now trying to locate control box for level system.
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Old 09-24-2020, 11:09 AM   #2
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Do you know your HWH system model # ?

625 ?
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Old 09-24-2020, 11:31 AM   #3
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Try the HWH reset button.
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Old 09-24-2020, 01:47 PM   #4
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Mike's correct about the HWH reset button. It is on the drivers left console almost all the way back.
If you decide to send in your HWH leveling computer, it's located in the center basement compartment ceiling under the plywood cover.

I would verify the batteries are in good condition, both chassis and house.
Are you plugged into 50 amp service?

Check your Intellitec Big Boy solenoid in the rear run bay (next to the engine). They are notorious for going bad. They are rebuildable but be careful with all that amperage available.
The Big Boy connects your chassis and house batteries when the house batteries have reached a preset charge voltage. Then your inverter can charge the chassis batteries.
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Old 09-25-2020, 04:03 PM   #5
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you have either bad batteries, or a major drain on them.
disconnect the ground cable on the batteries that are going dead, place an ohm meter in line, and start pulling fuses.
there will always be some parasitic draw, but it sounds like either something is being left on, or a short.
some mfg's connect hwh to house batteries, but most connect the hwh system to the engine side.
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Old 09-26-2020, 07:56 AM   #6
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Thanks for the info so far, Have got a Mobil Tech and checking out yesterday, he talked wath HWH Tech Support who guided us through checking control box, which was determined problem, so sending back to HWH for repair as no replacements for them anymore. Have replaced "Big Boy" about a year ago, but now doing same thing so probably will end up after diagnostic as bad. Would like to know who can rebuild them if anyone knows. I do have about 5 amp drain going on on batteries. Will go further with diagnostic check but now have to wait on control box to come back also
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Old 09-26-2020, 08:09 AM   #7
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Quote:
Originally Posted by Kenny Hughes View Post
HWH Tech Support who guided us through checking control box, which was determined problem, so sending back to HWH for repair as no replacements for them anymore.

Would like to know who can rebuild them if anyone knows.
You can get (some) HWH parts from NW RV Supply (you need the part number off the control box to get the correct replacement). Are you saying HWH can't provide a replacement? HWH: nwrvsupply.com
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Old 09-26-2020, 12:17 PM   #8
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HWH will rebuild your leveling computer. You must get an RMA number before sending it in. They are fast and prices are fair. You might ask for the new digital level sensor. It works great.

Big Boy rebuild instructions courtesy of Mike Canter.
Attached Files
File Type: pdf Big Boy Relay rebuild instructions.pdf (566.1 KB, 3 views)
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