I'm still struggling with Jaycos charge system. It's very sophisticated, but poorly documented. It does not charge enough from the vehicles charge system (fused with 30A / 50A) !
It appears Jayco has wired in two AUX charge systems and possibly they are in conflict with each other. The JHUB tablet may put out values from the J35C controller (BMPRO) that are misleading, because it would not know that a competing charge circuit is in place.
The BMPRO AUX input is wired up comparatively thin, which could result in detecting an OFF state falsely (input dropping under the threshold voltage. SETEC recommends installing a mini boost ! Alternatively we could of course disconnect or ground the AUX input of the J35 and AUX charge only through the Redarc system. Downside is that we will miss out on the tablet being able to assess the system status properly ! Jayco has not properly document its system wiring for the FD19. Questions to Jayco about this topic have so far been ignored. If the AUX charge circuits are in conflict, solar charge capabilities are likely to show deficiencies as well.
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Battery charging from the vehicle is wired up to two charge circuits:
1) The Redarc intelligent solenoid based battery isolator
2) The Setec BMPRO J35C
To find them and their fuses you need to look in two places (compartments)
1) Under the bed
2) Under the floor mat behind the driver seat
See conversation with SETEC for more details ...
It appears Jayco has wired in two AUX charge systems and possibly they are in conflict with each other. The JHUB tablet may put out values from the J35C controller (BMPRO) that are misleading, because it would not know that a competing charge circuit is in place.
The BMPRO AUX input is wired up comparatively thin, which could result in detecting an OFF state falsely (input dropping under the threshold voltage. SETEC recommends installing a mini boost ! Alternatively we could of course disconnect or ground the AUX input of the J35 and AUX charge only through the Redarc system. Downside is that we will miss out on the tablet being able to assess the system status properly ! Jayco has not properly document its system wiring for the FD19. Questions to Jayco about this topic have so far been ignored. If the AUX charge circuits are in conflict, solar charge capabilities are likely to show deficiencies as well.
________________________________________________________________________________
Battery charging from the vehicle is wired up to two charge circuits:
1) The Redarc intelligent solenoid based battery isolator
2) The Setec BMPRO J35C
To find them and their fuses you need to look in two places (compartments)
1) Under the bed
2) Under the floor mat behind the driver seat
See conversation with SETEC for more details ...
Further to my earlier email appended:
Meanwhile I have identified the parallel charge circuit mentioned below and I hereby provide you with this link to Redarcs instruction manual.
https://www.redarc.com.au/Content/Images/uploaded/Manuals/SBI%20Instruction%20Manual.pdf
Could you put me in touch with your development Engineer so that I can discuss any potential
conflicts with your charge system due to the Redarc system operating in parallel ?
(Jayco refused)
more links to
REDARC SMART START DUAL BATTERY ISOLATOR 12V 100A 4WD SOLENOID
https://www.redarc.com.au/Content/Images/uploaded/Flyers/5618%20SBI%20SmartStart%20A4%20brochure%20180426%20LR.pdf
https://www.ebay.com.au/itm/REDARC-SMART-START-DUAL-BATTERY-ISOLATOR-12V-100A-4WD-SOLENOID-PROTECT-/301948769080?_trksid=p2349526.m4383.l4275.c10#viTabs_0
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To: [email protected]
Looking at my wiring system it appears that I have two smart charging circuits running off the engine in parallel (alternator) and being wired to the house battery. My question to your engineering department is whether an additional AUX charging circuit operating in parallel could actually mess with the BMPRO J35C’s priority charge algorithm ! I’m not convinced that the mini boost should be added to an already complex system. Besides I don’t pull a trailer and have only 4 meters of wire between the batteries.
Best regards
Walter
Sent from my iPhone
> On 5 Sep 2018, at 3:34 pm, Customer Service <[email protected]> wrote:
>
> Good afternoon Walter
>
> Re 2: you gave me a cut out amperage, meaning as I presume that is when it stops charging. I’m only getting 1..2 amperes in, so what I’m after is the required voltage threshold for activating the charge relay !
> AUX start = 0.5v , 1 amp above battery voltage
> Solar start = 13.4v and 1 amp input
>
> I’m still of the opinion the charging circuits peripherals are not doing their job, cause the internals of the J35 are not fully understood.
> With the right wiring and a voltage of 14V at the end of the cable I should be able to push 10A into the house battery or 5A at least if the Jayco switch through relay consumes 5A. I presume you relays may consume 1..2 A - pls advise.
>
> Aux and solar relay consumption 70-100ma
Meanwhile I have identified the parallel charge circuit mentioned below and I hereby provide you with this link to Redarcs instruction manual.
https://www.redarc.com.au/Content/Images/uploaded/Manuals/SBI%20Instruction%20Manual.pdf
Could you put me in touch with your development Engineer so that I can discuss any potential
conflicts with your charge system due to the Redarc system operating in parallel ?
(Jayco refused)
more links to
REDARC SMART START DUAL BATTERY ISOLATOR 12V 100A 4WD SOLENOID
https://www.redarc.com.au/Content/Images/uploaded/Flyers/5618%20SBI%20SmartStart%20A4%20brochure%20180426%20LR.pdf
https://www.ebay.com.au/itm/REDARC-SMART-START-DUAL-BATTERY-ISOLATOR-12V-100A-4WD-SOLENOID-PROTECT-/301948769080?_trksid=p2349526.m4383.l4275.c10#viTabs_0
-----------------------------------------------------------------------------------------------------------------------------------------
To: [email protected]
Looking at my wiring system it appears that I have two smart charging circuits running off the engine in parallel (alternator) and being wired to the house battery. My question to your engineering department is whether an additional AUX charging circuit operating in parallel could actually mess with the BMPRO J35C’s priority charge algorithm ! I’m not convinced that the mini boost should be added to an already complex system. Besides I don’t pull a trailer and have only 4 meters of wire between the batteries.
Best regards
Walter
Sent from my iPhone
> On 5 Sep 2018, at 3:34 pm, Customer Service <[email protected]> wrote:
>
> Good afternoon Walter
>
> Re 2: you gave me a cut out amperage, meaning as I presume that is when it stops charging. I’m only getting 1..2 amperes in, so what I’m after is the required voltage threshold for activating the charge relay !
> AUX start = 0.5v , 1 amp above battery voltage
> Solar start = 13.4v and 1 amp input
>
> I’m still of the opinion the charging circuits peripherals are not doing their job, cause the internals of the J35 are not fully understood.
> With the right wiring and a voltage of 14V at the end of the cable I should be able to push 10A into the house battery or 5A at least if the Jayco switch through relay consumes 5A. I presume you relays may consume 1..2 A - pls advise.
>
> Aux and solar relay consumption 70-100ma
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