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Old 06-17-2020, 03:35 PM   #1
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Globetrotter Refer problem

We have a 2018 Globetrotter with the Dometic RMD 8555 refrigerator. It previously worked well for 2 years, but now is out of warranty. Today it will not respond to the keypad, no lights, buzzers, nothing. I have verified 12 volt power ( measured 13.4 volts on terminal strip at outside rear via access door).
Can anyone provide a link to the service manual for this unit? On line I have found only manuals for older versions of the 8555. There is surely a way to test the control board without throwing a $300 new part into the beast, only to find this is not the problem.
Dometic customer support has not been helpful, they will not transfer me to dealer tech support without a dealer access code.
Any thoughts or hints will be helpful.
Stormalong
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Old 06-17-2020, 04:15 PM   #2
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I was not able to find any service manuals either but there is the wiring diagram on the back of my unit showing two fuses on the printed circuit board under the black plastic splash panel just above the 12 and 120 V lead wires. Those would be the first to check. The controller connects to the board as does all the wires for the buttons and displays. Can you read wiring diagrams? As far as why one might have blown, did battery voltage drop while the unit was on?
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Old 06-17-2020, 05:41 PM   #3
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Two ideas, both are in the maybe category.

1st https://myrvworks.com/wp-content/upl...ice-Manual.pdf this manual might cover the RMD 8555 page 4 shows model breakdown. https://myrvworks.com/wp-content/upl...structions.pdf service instructions.

2nd Are you near the Kitsap and Olympic penninsula area? Darren at My RV Works provided the links above is a mobile tech covering that area.

https://myrvworks.com/

Gary
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Old 06-17-2020, 06:45 PM   #4
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Nice Gary,

I looked at the service flow charts and it shows to check that there is power to the terminals then check the fuses I mentioned earlier and if they are okay, do a system reset (reboot) by cycling 12V DC power off and back on.

So you might try to reboot it first. then check the fuses. If its not those, then replace the electronics controller board.
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Old 06-17-2020, 07:50 PM   #5
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Thanks for the link

Gary, the link to myrvworks.com/manuals is a great resource. The RMD8555 in his manuals is for an older model, different electronics and control board.
I have learned that the refer in my Globetrotter is discontinued. Anyone know what refer model is in new 27 Globetrotters?
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Old 06-18-2020, 05:13 AM   #6
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Don't give up, yet.

I've watched many of Darren's videos hence the link etc. On his website due to virus he added a phone call tech service for a handy DIY'er. Yes it is a charged service but you can investigate. Might give you a chance to also ask Darren if he has a service manual for your newer model.

https://myrvworks.com/submit-service-request/

Are you on the road in camp right now or stored and fixing problem? There is a work around for TEMPORARY powering of AC heater to make fridge work. I'll find that video if you're interested.

I haven't looked at schematic but might be interesting to confirm that control eyebrow board is getting assumed 12VDC?

Gary
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Old 06-18-2020, 06:05 AM   #7
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Were at home, not on the road, so I have time to deal with this. Please send me the workaround for running on AC anyway. I will continue searching for service/troubleshooting info. The eyebrow board only has a ribbon cable connection, so I need the actual schematic for this 2018 refer. Thank you for staying in touch.
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Old 06-18-2020, 06:17 AM   #8
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Pm sent. You’re up early.
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Old 06-24-2020, 05:04 AM   #9
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Any update?
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Old 06-24-2020, 08:41 AM   #10
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Update on refer

Well not really an update, but here is where I'm at. Dometic customer support has supplied an owners manual and parts manual. Thanks, but I need technical troubleshooting info. Dometic said must be power supply or control board problem but cannot provide tech help. I tried Dometic Dealer site but got stopped by needing dealer login.
The unit is on the floor in my garage, today I pick up a Nova Kool AC/DC unit that fits the opening. Low correct draw and our solar panels will supply plenty of juice.
I will eventually gain access to necessary tech info, troubleshoot, and perhaps repair; but for now its time to get on with life.
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