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09-13-2021, 05:20 PM
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#1
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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House batteries not charging
Driving down the road. No generator. Chassis batteries charging at 13++ voltage. House batteries not charging. Victron display showing batteries being depleated.
BB Relay is 2 years old and is working. If I press the battery boost switch at drivers seat, I hear it engage. (When I’m stopped). If I press switch when driving, victron immediately shows house batteries charging.
I suspect my IRD is not sending signal to connect. I don’t have a BIRD
Thoughts on testing ird? I don’t think there’s a fuse?
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Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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09-13-2021, 06:42 PM
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#2
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Senior Member
Join Date: Apr 2018
Posts: 3,441
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Alternators usually charge at 14 or 14.1. you should check voltage at the chassis batteries with the engine just up from idle, 800 rpm.
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09-13-2021, 06:57 PM
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#3
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Senior Member
Join Date: Jun 2011
Location: FL
Posts: 11,442
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Not much to test. Find it and see if it is sending the control signal.
It could be a generator cutout relay. That is, the signal may pass through a relay that is activated when the generator is running so both charging systems are not competing.
I know I have one on our 2008 Endeavor
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Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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09-13-2021, 08:10 PM
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#4
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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Quote:
Originally Posted by shootist
Alternators usually charge at 14 or 14.1. you should check voltage at the chassis batteries with the engine just up from idle, 800 rpm.
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Thanks. I’ll check it out.
__________________
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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09-13-2021, 08:12 PM
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#5
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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Quote:
Originally Posted by YC1
Not much to test. Find it and see if it is sending the control signal.
It could be a generator cutout relay. That is, the signal may pass through a relay that is activated when the generator is running so both charging systems are not competing.
I know I have one on our 2008 Endeavor
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I’ll have to research that relay.
Is the ird failing a common occurrence? This one is original on coach.
__________________
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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09-14-2021, 06:06 AM
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#6
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Senior Member
Join Date: Jun 2011
Location: FL
Posts: 11,442
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Bill, it is not a common failure as much as the Trombetta relay used in many systems or the Salesman solenoid either but they do fail.
My BIRD failed after just a couple of years and it was a long while before I found a replacement. In the mean time I had various work-arounds with success.
If you find yours is bad there are some other setups that work well. As suggested, your voltage has to get to (??13.1 or so) for a couple of minutes as there is a built in delay.
Thanks for the tip on the roof drains btw.
__________________
Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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09-14-2021, 07:19 AM
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#7
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Senior Member
Join Date: Aug 2015
Posts: 6,964
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Bill-
Here are links to two posts I made on another post. One talks about the IRD, and the second has the information to order a BIRD upgrade to the IRD.
Charging Chassis Batteries On Shore Power - Post 9
Charging Chassis Batteries on Shore Power - Post 22
As always, your coach may be different. There are pictures in that thread showing the owner's 2007 Camelot, which may be similar to your coach (or not).
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Mark
2008 Holiday Rambler Admiral 30PDD (Ford F-53 chassis)
2009 Honda Fit Sport
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09-14-2021, 07:42 AM
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#8
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Travel Nurse Chauffeur
Monaco Owners Club
Join Date: Dec 2012
Location: South Dakota
Posts: 340
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I'm on the check the alternator side. Believe it needs around 13.5 to connect.
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Bob & Barbara
2004 Monaco All Electric Signature Castle 45. S60
2020 JLU Diesel RBE II
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09-14-2021, 09:38 PM
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#9
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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I was vague on first post. Alternator is outputting 13.6. According to my research, that should be high enough.
Mark. I did see those posts about the bird. Thanks for reminding me.
I did experiment a little this afternoon. I’m going to test it tomorrow and report back findings.
__________________
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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09-14-2021, 09:47 PM
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#10
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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Quote:
Originally Posted by YC1
Bill, it is not a common failure as much as the Trombetta relay used in many systems or the Salesman solenoid either but they do fail.
My BIRD failed after just a couple of years and it was a long while before I found a replacement. In the mean time I had various work-arounds with success.
If you find yours is bad there are some other setups that work well. As suggested, your voltage has to get to (??13.1 or so) for a couple of minutes as there is a built in delay.
Thanks for the tip on the roof drains btw.
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Your welcome
I replaced the trombetta a couple years ago. It going strong and allowing the power to connect when asked from my boost switch. Just not from my IRD
I do have a cable I could hook positive house to pos chassis but it hasn’t been that big of an issue yet. .
__________________
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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09-15-2021, 02:59 AM
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#11
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Senior Member
Join Date: Jun 2011
Location: FL
Posts: 11,442
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Bill, you can just use a small jumper to power the little post on the trombetta where the purple wire is versus having to use a heavy duty jumper from battery to battery.
A simple inline switch could be fashioned as well. You would need to put it on a checklist to prevent forgetting it on when not needed.
The purple wire is the control wire for both the boost switch and the IRD but I know how these snow flakes are and electron are color blind so just put a voltmeter on the little terminals of the trombetta to verify the emergency start button fires off the solenoid.
__________________
Certified Senior Electronic Technician, Telecommunications Engineer, Telecommunications repair Service Center Owner, Original owner HR 2008
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09-15-2021, 06:20 AM
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#12
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Senior Member
Join Date: Jul 2014
Posts: 35,419
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Quote:
Originally Posted by YC1
Bill, you can just use a small jumper to power the little post on the trombetta where the purple wire is versus having to use a heavy duty jumper from battery to battery.
A simple inline switch could be fashioned as well. You would need to put it on a checklist to prevent forgetting it on when not needed.
The purple wire is the control wire for both the boost switch and the IRD but I know how these snow flakes are and electron are color blind so just put a voltmeter on the little terminals of the trombetta to verify the emergency start button fires off the solenoid.
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Many IRDs and BIRDs modulate the voltage down to about 8 volts, after closing the trombetta with 12 volts.
Just powering it up with a constant 12 volts, long term, can cause it to overheat and fail.
I would stick with the jumper.
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09-15-2021, 05:19 PM
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#13
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Senior Member
Monaco Owners Club
Join Date: Jun 2011
Location: CA
Posts: 4,476
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This morning, IRD worked as designed. About 1 hour later it disconnected and we couldn’t get it to connect. Drove 5 hours.
With engine running, no generator
Chassis batteries reading 13.7
Alladin display 13.5
Chassis/battery cable at front run bay 13.7
Front run bay where IRD plugs into circuit board 12.1—this is the issue.
I don’t have a wiring diagram. Possible bad circuit board?
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Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV or 2012 Jeep
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09-15-2021, 05:30 PM
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#14
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Senior Member
Holiday Rambler Owners Club
Join Date: Aug 2010
Posts: 9,746
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Don't believe I've ever seen less than 14.0V from my alternator, although 13.5 or 13.7v still should be enough to close your BB solenoid.
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Ben & Sharon
2008 43' Holiday Rambler Scepter PDQ
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