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Old 07-15-2011, 09:07 PM   #15
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Furnace Codes
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Old 07-15-2011, 10:34 PM   #16
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found it...under the shroud. checked the 3a fuse and it's good. replaced it for good measure with a new one. I've checked and double checked, cleaned and double cleaned all data connections, done the reset each time...and am still getting the EE code at the CCC.
am now thinking the CCC is kaput.
You might have a bad data cable, end on the cable or a bad cable union. I would get a good cable (NOT phone cable, though they look almost the same but the connectors are attached differently) and plug one end into the unit and the other into the CCC. If you're EE is gone, you have a cable problem.
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Old 07-16-2011, 08:12 AM   #17
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are those data cables - the reverse polarity phone type cable - available ready made? Maybe at Frys Electronics or Radio Shack? I called Alltex Electronics here in my area...a store that has everything electronics...and they don't have them, but they do carry the parts to make one.
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Old 07-16-2011, 09:13 AM   #18
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are those data cables - the reverse polarity phone type cable - available ready made? Maybe at Frys Electronics or Radio Shack? I called Alltex Electronics here in my area...a store that has everything electronics...and they don't have them, but they do carry the parts to make one.
I haven't seen them available at regular retailers or Radio Shack. I get them with inverters, solar monitors and such as they are included. I also have the tool to install the RJ style ends, so I usually make my own.
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Old 07-18-2011, 03:23 PM   #19
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Well, after diagnosing the system and trying to find a cable I'm headed for Home Depot to buy the cheap $10 GE Modular Crimping Tool and make my own. But I'm totally perplexed at why Dometic would sell a product that requires a specialized data cable that cannot be readily purchased when there are ready to buy data cables of every other configuration on just about every street corner on the planet. Even the AS dealership, which is 70 miles from us (one reason I'm diagnosing this and attempting to fix-even to the point of replacing the CCC out of pocket-which is still less of an expense than towing the AS to the dealer, leaving it for a month and then towing it back just to have it fixed under warranty) has to make their own cables.

Just wondering if anyone's ever used the $10 GE RJ11 crimping tool and if it's worth the $10 bucks. Just need to crimp two connectors.
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Old 07-18-2011, 07:56 PM   #20
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Hey Lewster,
I picked up the GE crimper, (which works great-by the way-well worth the 10 bucks and it comes with half a dozen RJ11 connectors)...made a new 4p4c cable and bypassed the installed data cable, did a diagnostic hook up with the new cable. Same results...EE.
I've eliminated everything from the chain of connectivity and am now convinced it's the CCC that's gone bad. The service tech at my local AS dealership agrees that it has to be the CCC so I'm going to order one and hope that all the diagnosing pays off with the correct fix.
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Old 07-19-2011, 12:55 AM   #21
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Hey Lewster,
I picked up the GE crimper, (which works great-by the way-well worth the 10 bucks and it comes with half a dozen RJ11 connectors)...made a new 4p4c cable and bypassed the installed data cable, did a diagnostic hook up with the new cable. Same results...EE.
I've eliminated everything from the chain of connectivity and am now convinced it's the CCC that's gone bad. The service tech at my local AS dealership agrees that it has to be the CCC so I'm going to order one and hope that all the diagnosing pays off with the correct fix.
It could also be a bad relay board, so if the new CCC doesn't fix it, you will know what to do.

Also, these 'data cables' are used by every other roof A/C manufacturer and also to connect inverters to their remote control panels, and solar charging systems to their remotes. They all come with these cables.
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Old 07-19-2011, 06:48 AM   #22
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Lewster, do you recommend using dielectric grease on those RJ11 connectors found in that system?
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Old 07-19-2011, 06:58 AM   #23
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.....and Brow324, your $10 was well-spent: sooner or later you'll get to use that crimping tool in connection with your "Micropulse Systems Monitor"!
(Those of us with exposed black/gray sensors get lots of practice).
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Old 07-19-2011, 10:33 AM   #24
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I think the Texas weather of these past couple of years has started to affect things that are constantly exposed to the cold/hot climate changes. Our winters here the past two years have been more severe than I can remember. And the past two summers have been brutal. Expansion/contraction of things stored outdoors will eventually cause a failure. Such is the case with the circuitry in the thermostat I suppose. And with circuit boards one tiny fault will put it out of commission. I've had to tackle other incidental repairs to the AS, which were each related to adverse affects from weather exposure. Funny thing is though-my previous TT, which we had for 12 yrs, never suffered a weather related component failure, other than routine exterior plastic gadgets like compartment lid retaining clips and roof vent covers breaking from continuous exposure to the elements. But it didn't have as much computer chip and circuit board integrated components on it either. We lost a backyard tree to a lightning strike about 5 yrs ago. The tree was 30 Ft from our TT. The static discharge fried almost every computer chip in the house but the TT was unaffected. C'est La Vie.
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Old 07-22-2011, 03:43 PM   #25
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the new CCC arrived today. am going to hook it up and see if the a/c works when I get home this evening. Hopefully that was the fix!
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Old 07-22-2011, 03:51 PM   #26
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.....and if it's not the fix, at least you'll have a "known" good one for troubleshooting in the future! How much is a new one, anyway?
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Old 07-22-2011, 09:39 PM   #27
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I got the new CCC for $82 total delivered to my door - $75 & shipping- from AdventureRV.net.
so I got home from work and connected the new CCC to the data line at the wall mount...got an EE code...did the reset and wah-lah...a/c started working. So I let it run for about 10 min to make sure the compressor was working and cold air was coming thru the system and was convinced that was the fix. So I left it running and started putting the ceiling trim back up...first the vent cover, then tucking the wires back up into the cavity...then it stopped. I checked all the wiring to make sure I hadn't caused a disconnect while putting them back up there but never could get it to come back on. Got up on the roof and checked the relay board fuse again...still good...checked all the CCC data line connections again...tried my diagnostic cable. Pulled the wiring back down and checked it again. No response. The new CCC is showing a readout of system and mode options but as soon as the zone readout stops blinking after turning it on...at about 30 sec...the CCC turns off and has to be manually turned off then on to get the readout back. No fan...no a/c...no nothing. Did a few resets...same result each time. I'm stumped. So I'm going to take it to the AS service center-60 mile drive one way- and leave it with them. Have to remove my Hensley so they can move it around their parking area with their little tractor, which has a ball hitch on the front end. UGH.
The only thing I haven't diagnosed for issues is the relay board, and although I am capable of doing that and replacing it if needed, I'm tired of messing with it and it's a hundred and five freaking degrees here. It's time to use the extended parts and labor warranty we paid for! But when we get the AS back I'll post the results so it might help anyone else with similar issues.
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Old 07-23-2011, 02:07 PM   #28
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Brow, I'm sorry to hear that a new CCC didn't solve the problem, and that you'll probably have to take it in......at least you tried. I'll gladly spend a hundred bucks to try to solve a problem (which would be covered under warranty), if it means that I can avoid hitching up and dragging it in to the dealer. Well, sometimes I win, sometimes I lose.
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