We had a problem and resolved it.
There has been enough questions and concerns about the FLX elect system I wanted to share what I think I know.
Some Background
Our previous trailer was a Nu Camp T@B400. A very nice trailer, well built with a great combined Water heater and trailer radiant heating system by Alde, and a modest but capable solar implementation. The T@B400 was towed almost effortlessly by our Audi Q5. We had the trailer for 2 years before determining it was too small for our comfort. Quite by accident we met a couple on one trip who had a Micro Minnie, which we had never heard of. After poking around online we thought the Hike would be a an acceptable size upgrade and still be towable by the Audi. We put a deposit on a new Hike at our local dealer. Shortly after we saw the MicroMinnie 2108DS floorplan we decided to “bite the bullet” and upgrade the Tow vehicle and Trailer and asked the dealer to move our deposit to the Micro Minnie 2108DS. We realized we would not be getting the nice Alde system nor the Solar system the T@B400 had, but felt the 2108DS floorplan made it worth it. And then,… Winnebago introduced the FLX and we were overwhelmed with the total package (still are)! We, again asked the dealer to move our deposit this time to the MicroMinnie 2108DS FLX. and waited,…
Delivery
We were the First, at our dealer, to have placed a deposit on a “new” FLX so we were delighted to get the call in early April 2022, that they were in! However,… being “first” carries some “risk”.
The dealers really don’t know much about these, but that was not a surprise. We scheduled our appointment for the day after they were to have received factory training. When we came in to look at the new trailer the dealer staff had not received any training, or really had any, knowledge of the upgraded systems of the FLX. I was hoping the training session they were to receive the day before from a Winnebago trainer would be helpful. And also hopeful that the Winnebago “pouch” would contain helpful information with regards to Winnebago’s solar implementation (it doesn’t). Regarding the battery, a QR code sticker on the box housing the Xantrex inverter/charger and Lithionics battery was the entirety of the information. So we walked them through what we knew from (obsessively) reading everything we could find on line and watching every video dealers, and new owners, posted.
The Dealers Service department advised us the only problem they noted in their PDI was that the Fresh tank was not reporting correctly, and would require a new panel, which should be there within 2 weeks.(thats another whole story!) We asked for a walk through of the Solar system operation but were told they had not received any training. We completed the “overview” of the trailer verifying that lights worked, water flowed, heaters heated, AC cooled, etc. with the trailer operating on battery and that only minor “fit and finish” issues were noted.
With the sensor reading being the only apparent problem needing to be addressed, and having experience with flaky sensors reading we said we’d would accept delivery. After a long day at the dealer, we took ‘er home and attempted to unhitch,
No power to operate the tongue Jack!
and here our story begins,…
Issues with the FLX Electrical System
The Lithionics App showed the battery was at 0% charge. This sent us off on a mad scramble to charge the battery during which we discovered;
- The Xantrex remote panel was non operational and thats the interface to their App, so that wasn’t helpful.
- the lithionics site is very helpful, but doesn’t directly address the FLX system
- The black circuit breaker was OFF and it doesn’t do what I thought it would. Based on our experience with the NuCamp T@B400 implementation I thought it would isolate the loads, but allow charging. It does not.
- The Battery needs to be ON! The blue LED button turns the battery Off and On.
- The Xantrex inverter/charger charges the battery when attached to “shore power”, and turned on.
Flipping the circuit breaker on and turning the battery on, along with Plugging into Shore Power over night was enough to get unhitched!
What was wrong?
Further examination found the “phone cord” between the Xantrex Inverter/Charger and the panel was not connected at the panel. Easy fix - we plugged it in allowing the panel to work and there fore the Xantrex App to work. Using the GoPower! and Xantrex apps we saw enough significant, and obviously erroneous, configuration setting to make us suspect the system was configured incorrectly.
Notable Incorrect Parameters GoPower!
- Battery type: Gel
- Capacity: 200Ah
Xantrex
- Battery type: Flooded
These were obviously erroneous but we had no way of knowing what the other parameters should be, or which, if any were not applicable to LiFePo batteries. After poking around the internet, and this site, we were advised by creativepart to call Winnebago Towables Customer Service (574) 825-8052 which we did.
The following is a slight edit from a previous post of mine to remove a couple of speculations I previously made which were wrong or incomplete.
The representative advised us that there is/(was?) a known issue with the Winnebago solar implementation which requires a reset of the battery and also changes to the configuration settings of the Xantrex inverter/charger and also the Go Power! Solar charger. Apparently these charging components were shipped with a couple of key parameters being incorrect. When I gave the rep I was talking with the VIN she was able to confirm ours is/was one of the units that needs these configurations made. She requested I schedule a service appt with our dealer and notify Winnebago Warranty when it is scheduled and they would contact the service dept with the needed information.
Note: If you have, or suspect you have, an incorrectly configured system I believe the first course of action is to contact Winnebago Towables Customer Service (574) 825-8052. Ask if yours is one of the units with the known misconfiguration. They are very helpful. Have the last 5 of your VIN.
Resolving the misconfiguration
The coordination between me, Factory and Our dealer service department was “cumbersome” but fruitful.
Correcting the configuration and some “findings”
From coordination between Factory and Our service department it appears that
- Xantrex engineers, working with Lithionics and GoPower! designed the FLX solar configuration.
- Winnebago configures the system via a flash drive containing the parameters for the GoPower! and Xantrex elements.
- The initial flash drive omitted (left as presumably default) a couple of key settings. Notably Battery Type and Ah.
- My before/after comparison showed the following changes;
- Xantrex
- BattType: LFP (was Flooded)
- BattTemp: warm (was Hot)
- GoPower!
- Battery Type: LiFePo (was Gel)
- Capacity: 320Ah (was 200Ah)
IMPORTANT Note and Caveate;
These are only what I was able to note as changed, some that didn’t change may have been correct and some, may be “don’t care” defaults which are irrelevant to the Lithionics battery.
This system is sophisticated, flexible and capable of being updated. I would hope when and if changes are recommended Winnebago will proactively inform the community either through the dealer network or directly to the users.
Changing Focus
Once the system configuration is correct, we can move on to using the system. It’s straightforward, but different enough from our previous experience to make me want to capture it.
FLX Electrical System Overview and Operation
Overview
* Components
* Black Circuit Breaker, Main battery disconnect
* 2 190 Watt Solar Panels
* Lithionics 320 AH LiFePo Battery
* Go Power! Solar MPPT Charger
* Xantrex Inverter/Charger
* Operations Modes
* Off/Storage
* Battery disconnected (system unpowered)
* No charging, and no 12 V DC or 110 V AC available
* ON
* 12 V DC available, and 110 V AC provided when required
* Battery automatically charged as required when external power source available (Sunlight and/or Shore Power)
Operations
System Overview
* ON/OFF of System controlled by Battery (blue led button)
* Battery Automatically Charged by Solar and/or Shore Power
* Xantrex Inverter/Charger Automatically provides 110 V power as required
System On/Off
* Black Circuit Breaker/Main battery disconnect
* Nominally ON except during >3 Mo storage
* Blue LED on Battery Box is system control
* 1 second press ON
* solid = on
* flashing = charging
* 3 second press OFF
* unlit
Charging
Automatic via Solar/Shore Power
* Solar
* battery is charged as needed/determined by Battery and Solar power availability
* Go Power! Solar MPPT Charger provides current to battery
* Shore Power
* Xantrex must be ON
* Button on Xantrex panel
* Up = STANDBY/OFF
* Down = ON
* battery is charged as needed/determined by Battery
* Xantrex Inverter/Charger provides current to battery
Power Delivery
* 12 V Power
* Automatic
* Battery provides 12 V power to 12 V appliances/loads
* 110 V power
* Xantrex must be ON
* Button on Xantrex panel
* Up = STANDBY/OFF
* Down = ON
* Battery/Inverter Mode
* Automatic
* Xantrex converts 12 V DC (battery) provides conditioned 110 Volt power to appliances/loads, when required
* Shore Power Mode
* Automatic
* Xantrex conditions 110 V power and provides directly to appliances/loads
* Transitioning Modes are automatic
* Shore Power to Battery
* upon loss of shore power
* Battery to Shore Power
* Upon acquistion of Shore power (20 seconds)
Storage
State
* Battery disconnected (system unpowered)
* No charging, and no 12 V DC or 110 V AC available to loads
* no parasitic loads on battery
Enter Storage Mode
* Fully Charge Battery
* <3 Mo turn off Battery (3 second press of blue LED)
* >3 Mo also turn off Black Circuit Breaker / Main battery disconnect