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I've been chatting with another Oliver owner who had the exact same error yesterday. My understanding is that it's some sort of "E"lectrical error with the "H"eater. That could mean: loss of signal between heater and the display (loose wire?) loss of power to the unit (different loose wire?) loss of power to the igniter or something else I think that's where the suggestions of resetting the various power supplies comes from. I've been told that listening the heater start up may narrow the investigation. e.g. If you hear the fan, the heater has power? If you hear the igniter clicking, it's got power? If you hear nothing, power is not getting to the unit? etc. Alas, I have no answers. But, if they report back a solution, I will let you know. If you find it first, please report back. Thanks, Dennis

Boys night out?

Hmmm. I think you are entering the realm of Oliver service and an authorized Truma service center. It seems this error code is unusual or there would be alot more responses to this thread by now.

I'm sure it's been mentioned here too, but the Alcan wet bolts and shackles are heavier duty than that of Dexters. If keeping the Dexters, you may have a spare pair of shackles and bolt(s) if doing really long trips across the country. I even carry some old ones in case I run into some who again breaks a Dexter shackle or wet bolt. We've seen both. In regards to 4 or 5 leafs, I don't think anyone here really could tell a difference between the counts, in the long wrong. I have 5-leaf, but considered 4. Oh well - Horse is dead, but both will work fantastic for our light weight rigs. Just get the upgrade and go enjoy life.

I am reluctant to add yet another lengthy post on this endless thread but there are concerns that I don’t think have been settled. They are not a big problem, but worth considering since it’s a simple, free solution. For those that have already had their Alcan springs installed, I think this is worth reading, as you might want to check on your setup and avoid premature wear on your system. I have not had time to replace my springs yet, but I’ve read every post on it to ensure I do it right, since I will be doing it myself. Some folks that have installed Alcan shackles and wet bolts seem to have changed their recommendations somewhat after having some experience with the hardware. See the attached related thread started by @Wayfinder. https://olivertraveltrailers.com/forums/topic/11183-alcan-springs-quote-for-jan-2026/page/2/ On Page 2, @Geronimo John raised several concerns, all of which I think are valid. Subsequent posts by others on pages 2 & 3 further support the concerns, but no consensus, and I’ve not read anything about it since. Alcan shackles and wet bolts are a different design than Dexter. Alcan seems to have an acceptable design, but if used, then it has been suggested by some the maintenance procedure be changed from the one that Alcan recommends. Specifically, the wet bolts should be set by clearance, not by torque. Read the posts to explain why, but there have already been a few problems posted. Periodic re-torquing could be making matters worse. I called Alcan to order my springs, and I discussed these concerns with Tim. He seems relatively knowledgeable about the design, but really couldn’t respond one way or the other, except to say that’s just the way they do it for manufacturing simplicity. He said he’d pass on my concerns to management, but I have no idea if that will result in any changes. I also called Oliver and spoke with Scotty in Tech Support. He confirmed the new Apex model has Alcan 5-leaf springs, but uses the Dexter shackles and wet bolts that are standard on all of our trailers. That makes sense from a production standpoint, and the Dexter wet bolts are set to a torque of 30-50 ft-lbs. The clearance is handled by the design, because Dexter wet bolts have a shoulder. I’ll repeat, these comments are coming from someone that has not yet had my hands on an Alcan spring, so I could be way off. Those of you that already have them, please check your install and provide feedback, supportive or otherwise, because you may save yourself and others some repair hassles. Call Alcan if you’d like, and discuss it with the expert that sold you on their version, and let us all know the outcome. If the Alcan springs, shackles and bolts need corrective action, it seems a simple fix to me. Just check clearance, and re-adjust the wet bolts to get adequate clearance between the bushings and the shackles or hanger tabs. Should make greasing easier and more effective too.

@DanielBoondock Do you plan on re-using your Dexter OEM shackles and wet bolts? If not, why not? They should in good shape since your mileage is low. If you are, then use the Dexter torque values (30 min, 50 max), as the design is different. Also wanted to remind you to re-use the dished washers from your Monroe shocks and install on the opposite side of the rubber bushing from the Bulldog washers. This will support the rubber bushings better and they will last longer, provided they are not overtightened. Details and pics about this are in several threads on the bushing subject, Attached is one of them. https://olivertraveltrailers.com/forums/topic/11302-cracked-bushings-on-monroe-struts/#comment-124349

@DanielBoondock or anyone. I don't have time to trudge thru all this, and I may have mentioned it somewhere in here, but before attempting to remove your old U-bolt nuts, or any, CLEAN the heck out of the visible threads on the bolts. So clean with a small wire brush, then penetrating fluid for a while. I did have one of my first nuts seize up on us, and it was a 30 to 45 minute stressful event to get that sucker off. We did remove it with a LOT of impacting, but man! What a fight and a half. Good to have an Impact and a couple charged batteries. I did have a Ryobi impack drill, a must have (any good brand). I just added to my tow vehicle tool build-out, the Ryobi 3/8" ratchet drill (again, pick your fav. brand). There were a few spots the ratchet drill would have fit better than the bulky impact drill. The ratchet drill is NOT necessary, but a good first-world tool to make some things easier. When that nut got stuck trying to remove it, I wish I had a grinder. That's my next tool to add to the truck. I now carry everything in my truck to do just about any job. No, I'm no expect, but I know a good bit more now than I did before doing two Olivers' leaf springs. Oh, VERY Important. If you are not in good shape with a strong back. Please God, think twice before doing this. I was laid up for a few weeks, but that's my own damn fault for being a computer IT guy for 35 years. Now I'm working out and stretching to make my soon-to-retirement (Dec 31st) a better experience. 😉 Lastly, there may have been questions about the 65 ft-lbs of torque on the hanger wet bolts. I will be inspecting my buddy's Oliver this weekend to see how his hanger look after two years of traveling a good bit. More to come on that with pics hopefully. I don't have much mileage on my Oliver since I did my springs, but I will check that too.

I'm looking at these Vatrer batteries now myself. Can't beat that price for 900ah for what seems to be a decent quality brand.

Thanks for the encouragement! Good tip on the impact wrench, that’s the tool I was looking for. I already have a DeWalt mini vac and a leaf blower for the trailer so will add the mid impact wrench and 3/4” thin walled protective socket, plus a general impact socket set for using on the trailer AI is helpful here to pull out the tips from the forum, here’s the ones that stand out Make sure the shackles point up when assembling or it’ll have to be redone Do one side (driver) completely both axels first, then the other side, so the opposing side is aligned and secure Tighten U-bolts in a criss-cross Align the wet bolts with the grease holes horizontal, and seat the splines (e.g. rubber mallet) before final tightening Shocks Leave the compression strap on the Bulldogs until assembled and on the ground, then clip off to uncompress Be careful about compressing but not squashing the shock end bumpers Torque Bulldogs to 40 ft-lbs and the rest to Alcan specs (provided) Do all final torque settings while the trailer is on the ground and ‘loaded’, not hanging in the air Use the impact wrench only for loosing and spinning on the nuts, always use a torque wrench for final setting. Don’t use the impact wrench on the wet bolts

Thought some might get a kick out of this video clip my wife shot in our back yard and set to music last rutting season. 4 bucks.mp4

We just spent 4 overnights between Flagstaff and the canyon. Not exactly the desert SW at 7600 feet but it was the week of July 20th with highs in the mid-to-high 80s, everyday up there (116F in Phoenix). Two of 4 nights we had monsoon rains and we had to cook indoors using a pressure cooker one night and Emeril oven another (microwave removed for the Emeril). We often use a portable induction cooktop but not this trip. We had the A/C on 24x7 in fear of overnight rains, when generally after dinner we would open windows. A couple nights the old Dometic 3-way fridge had the "Check" (LP) light come on, likely from the altitude, so we also ran the fridge on batteries for about 60 hours over the 4 days. With the Victron MP2 inverter/charger we can run the Chill Cube A/C, The Emeril Oven, the fridge, the TV and soundbar, etc. all at the same time without worry as to what we can or cannot run on electric. Coffee every morning with an 1100W electric kettle. With 900 Ah LiFePO4 batteries we have power to spare. I can see what you're saying, but of course with the old Penguin A/C you're not running A/C at all when unplugged. The P2 would bring 300 Ah down to ZERO in 2 hours. I thought we had all the power we needed to run A/C for 4 days straight, and we did but had not counted on running the fridge on electric too, which hour after hour takes quite a bit of Ah. The picture shows our remaining Ah on our 4th night at 7 PM. Epoch #2 was below 20% and it stopped showing up on the app (notice the pic shows 600 Ah total since it cannot see one battery). By morning SOC was 18% and when we got home late afternoon SOC was 43% with battery #2 again reading, recharged from the DC-DC charger. SOC of 43% might not sound too good, does it? But keep in mind 43% of 900 is 387 Ah. Instead of driving home, if we had driven to another campsite we'd be back in business for another couple days. I'd give up our 900 Ah right along with my right arm! 😎 But if you have no interest in upgrading your A/C and running it off-grid then 300 Ah is good enough. Those who go from 300 to 600 Ah can get down to 50% SOC and be at 300. If you have small Ah capacity, you always need it full. Having greater capacity allows you to run at lower SOC%. We were able to run A/C for 100 hours straight, including when towing, with our setup! And if you're always running near 100% SOC, the DC-DC charger will get lonely with no work to do! 🤣

On the 18th day after crossing the Canadian border at the beginning of June, we finally got some sunshine and things returned to normal, electrically. Our array of 600AHs recovered nicely from 19 & 21% the next day. I was beginning wish I had a 900 setup. 300 would be too little for us for the amount of boondocking we do. And we do not power the A/C from battery power. So far it works for us :) John

I don't understand the need for 900 Ah. Without getting any charging, 300Ah easily covers us for 5 days. With good sunlight our batteries are pretty much topped off every day. Can you run your air conditioner and microwave? do you run an electric induction stove top?

First, great write-up. Saved it to my DIY file. We also travel long and far, and having a Victron DC to DC has been wonderful. Sadly ours is only the 30 amp verson. But when it fails, I'll be digging out my saved DIY of your efforts. So thanks in the future a second time. I too am open to roof mount solar, some day. Just don't like the look or their potential MPG impact, especially out west with high speed limits. I'm hopeful that future surface mount panels will be made to allow "full" covoerage of our roof. Specifically from the low outter sections to the main middle section curves. Current surface mounts that I have looked at don't have adequate bend radius to cover all three areas fully. Besides the power benefit, it would sure make waxing Ollie's top a LOT easier. Thanks again, GJ

Did a CP control panel reset. No joy.

Called 8/16 (better late than never!) and got a reservation. Campground said they had several cancellations, so if you're on the fence and thinking you won't get a good site...you just might get a nice site! After watching Jason's YouTube on some of the plans...that convinced me we need to return. First rally we attended was 2023 and it's time to see the new Oliver's and meet more owners! Plus...great time of year...October in the 'Bama Mountains!

Took ours apart to install new batteries and could not figure out how to reassemble it !

Nice shower! Being a man, and given our usual boondocking spots, I'm out there showering in underwear without a curtain. Chris showers inside but I'm outside whenever possible so I don't get the entire wet bath wet! When I do shower inside, I empty the room and then end up hosing the entire wet bath clean too! Most people do not realize dumping grey water is allowed in the National Forests wherever dispersed camping is allowed and when 200 ft from a water source (see USFS Dispersed Camping publication). I'm not certain, but I apply this rule to BLM lands as well. The high desert critters and bugs eat it up and by the next day you wouldn't even know it was there. Drain slowly so not to cause erosion, and an outdoor shower is a small amount of grey water let go slowly. 😎 USFS Dispersed Camping_stelprdb5196126.pdf

You probably already know this but that error code relates to fuel or power supply issue. The suggested remedy is a system reset.

This is great. I remember you telling me about your shower hose modification, and would love to know more about that element as well. Does the longer hose fit well? What is it made of and how hard was it to change out? What does the suction cup mount for the hose end look like?

Thanks, we appreciate that! We feel like kids at Christmas. Thursday can't get here fast enough. 😁

We live in Maryville, TN. (next to Knoxville)

Sorry - no Ukelele - but I do play music and I have been known to make a Mai Tai on occasion. 🙂

It's not a complicated job to do on your own but will take a bit of time and it helps if you have someone to help. I replaced all of my springs and associated hardware as well as the shocks last spring by myself out of necessity, (one of my springs broke on my previous trip). It helps to have a good impact wrench with associated impact rated sockets. In addition to using the Olivers jacks it helps to have a couple of bottle jacks for supporting and manipulating the axles (when lining things up). I also had a couple of jack stands on hand for additional security but luckily didn't need them. Just take your time and you'll be fine.

Hummers in Prescott.MOV