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Have an RMD8551 and will not switch between supplies when…

Hi Pearl, Have an...

Hi Pearl, Have an RMD8551 and will not switch between supplies when running for a while. Turn off 12V and 240V for hour and turn on and can switch between supplies. Suspect a component on the MES?

Mechanic's Assistant: What's the make/model/year of your RV?

Goldstream 16'6 Rear Ensuite, 2012 Model.

Mechanic's Assistant: What is the model of your '16 RV?

Australis

Mechanic's Assistant: Are you fixing your RV yourself? What have you tried so far?

Not sure whether to replace circuit board

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No thanks

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Customer reply replied 4 months ago
Sorry I don't mind paying for advice but am not committing to a monthly fee.
Customer reply replied 4 months ago
Thank-you, accidently hit wrong button after seeing monthly fee. Look forward to your solution.
Thanks John
Answered in 7 hours by:
3/12/2018
Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 14,266
Experience: RVDA/RVIA Master Certified Technician with many years experience.
Verified

Hi! My name is ***** ***** I can assist you with this. I may need some additional information from you first in order to give a complete answer.

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Sorry for the delay in someone getting to your question! I am in California and it is still very early here. When this happens, is there any error code flashing on the display? And I am attaching a copy of the Service Manual that is used for this model. Print this out so you have it. Get back to me about the error message and I can give you more here. All follow ups are included in our one time fee. No time limit. http://bryantrv.com/docs2/docs/Service%20Manual,%20RM8xxx.pdf

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If you look at page TD S29 I believe this is what is happening. It has detected an undervoltage and shuts down and takes about 25 minutes for it to allow that mode again. This is giving your battery(s) time to recover. I would check them to be sure one or more isn't failing. Most will only go about 3 years. I can be due to lack of charging as well. If you have or can install some solar charging that would help. Hope this gives you some direction here. I don't think there is anything wrong with the control board in this case.

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Customer reply replied 4 months ago
Thank-you Randall no error message. Battery OK as are the solar panels.
I will try "freeze" on components and maybe find a failing one.
Regards ***** *****ley

You are welcome, John. Take a DC volts reading when this happens at the rear of the fridge to verify that the voltage is adequate. Don't overlook a bad ground as that would reduce the voltage as well. Let me know what you find.

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Customer reply replied 4 months ago
Thanks Randall, will let you know how I get on but will be a few days.
In Australia so reluctant to phone on cell phone.
Regards John

Super! Fully understandable. Had somebody from New Zealand tell me if was cheap to call us over here?

Randall
Randall, RVIA Certification
Category: RV
Satisfied Customers: 14,266
Experience: RVDA/RVIA Master Certified Technician with many years experience.
Verified
Randall and 87 other RV Specialists are ready to help you
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Customer reply replied 4 months ago
They Know how to charge here. Great service you have there, wish our country had it. Too old to migrate 75.

I hear you! Be safe.....

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