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Old 02-04-2016, 05:31 PM   #15
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When measuring the compressor current, what result am I looking for to determine if I lost refrigerant or not?
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Old 02-04-2016, 05:34 PM   #16
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It's a pain to take it to the dealer since I'm currently staying in it but if they can do it all in a day then I'm fine with that.
I spoke with Airstream Los Angeles earlier and they said if it needs replacement, the paperwork with Airstream/Dometic can take a few days but the actual work is only a few hours so I'm a bit more optimist.

My heat pump isn't that noisy, I have ducted air which helps quite a bit.
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Old 02-04-2016, 06:59 PM   #17
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I'd ask the dealer where you will take it for warranty service if they can send the tech out to look at it. Or perhaps they work with a mobile RV service person they trust to diagnose the problem. If you have good air flow through the outside and inside of the unit a situation like this requires a look under the shroud to see what went wrong. If the dealer has determined the unit is bad and has a unit in stock they can change it out in a few hours. Maybe if you explain your situation the dealer will work with you to minimize the disruption of your routine. Good luck.
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Old 02-04-2016, 07:59 PM   #18
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I did check with Airstream LA if they provide mobile service but they do not. Still waiting for a call back from one of their techs. I also reached out to a Dometic authorized mobile RV shop but they haven't called back, the lack of urgency or just normal priority is quite frustrating. I don't need AC/HP as I can get by with the furnace but I want to take care of the problem now before I need to use the unit.
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Old 02-05-2016, 06:44 AM   #19
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Originally Posted by deadlock View Post
When measuring the compressor current, what result am I looking for to determine if I lost refrigerant or not?

Using an amp clamp type meter, look at the black or blue wire going from the relay board directly into the compressor.

Remove the shroud, go back inside and turn the unit on. Climb back on the roof and take the measurement. This allows the compressor to start up and settle down a bit before taking the readings.

The compressor FLA or RLA (full load amps or running load amps) for a Dometic 15K unit is around 13 amps at 95 degrees. Depending on the ambient temps, you should see 11-13 amps.

If you have lost refrigerant, your readings will be less than half of the operational rating.
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Old 02-05-2016, 01:45 PM   #20
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Lewster- Thanks! Exactly what I needed. I'm gonna grab a ladder from the maintenance crew and get to the bottom of this.

Are you ever out in Southern CA? I've been wanting to upgrade the factory solar and max out my solar capacity, upgrade my charger and solar charge controller. I'd love to work with you on getting this done.
If not, when things calm down I'm a few months, I can head up north, when are you in Oregon?
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Old 02-05-2016, 03:01 PM   #21
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Old 02-05-2016, 07:14 PM   #22
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I just measured the amperage going into the compressor and I'm only getting 5.8A to 6.16A so I'm guessing I definitely lost my refrigerant? Everything looks pretty new and clean otherwise, the copper lines look in tact without any obvious compressor oil indications of leakage.

I did this test with the AC set to 55 while it was about 70 outside. I also switched to heat pump but got similar readings with the tstat set to 85.

The only other thing I've noticed is the ducts in the front of my trailer have very little air coming out, the 4 ducts in the bedroom area have significantly more air flow and feels to be about what I expect. I doubt there's multiple issues going on but has anyone noticed similar air flow? I don't know for sure if anything changes with the amount of air coming out of the vents as I probably just tested near my thermostat in the bedroom.

Here's a pic of the reading I get with my clamp on ammeter:
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Old 02-05-2016, 07:50 PM   #23
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I just had a Dometic refrigerator recall done. The guy came to the trailer, and said it was all paid for by Dometic. I don't know if the same would apply to a regular service call.
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Old 02-05-2016, 08:11 PM   #24
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Good to know, Tn Traveler. I suspect I can get a Dometic warranty service guy out here, there's plenty of mobile RV repair places around here. My first thought was to get it done through Airstream but it's been a headache to speak with someone at the dealer so I'm thinking going the same roure as you. Thanks!
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Old 02-05-2016, 09:00 PM   #25
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Good to know, Tn Traveler. I suspect I can get a Dometic warranty service guy out here, there's plenty of mobile RV repair places around here. My first thought was to get it done through Airstream but it's been a headache to speak with someone at the dealer so I'm thinking going the same roure as you. Thanks!
Check the Dometic website for authorized service techs in your area.
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Old 02-05-2016, 10:07 PM   #26
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Originally Posted by deadlock View Post
I just measured the amperage going into the compressor and I'm only getting 5.8A to 6.16A so I'm guessing I definitely lost my refrigerant? Everything looks pretty new and clean otherwise, the copper lines look in tact without any obvious compressor oil indications of leakage.

I did this test with the AC set to 55 while it was about 70 outside. I also switched to heat pump but got similar readings with the tstat set to 85.

The only other thing I've noticed is the ducts in the front of my trailer have very little air coming out, the 4 ducts in the bedroom area have significantly more air flow and feels to be about what I expect. I doubt there's multiple issues going on but has anyone noticed similar air flow? I don't know for sure if anything changes with the amount of air coming out of the vents as I probably just tested near my thermostat in the bedroom.

Here's a pic of the reading I get with my clamp on ammeter:
Attachment 256880
Good Job!

Your system is empty with an amp draw reading that low…... and you need a new roof unit! If you are still under Dometic's 2 year warranty, then they should pay for the parts and labor, but unless your rig in immobilized, they usually don't pay mobile service calls. Recalls are a completely different matter.

The only problem with using a mobile tech is their unfamiliarity with the idiosyncrasies of an Airstream. That includes where to walk on the roof, how to replace the drain kit and how to re-secure the A/C unit to your roof.

Unless you can find a tech that has direct experience with Airstreams, I would wait for the dealer (yes, I actually just said that!). At least you have a better chance of them not denting your roof or not connecting the internal drain hose, or other worse situations. I've seen them all!!!

Be careful out there!
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Old 02-06-2016, 07:03 PM   #27
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Yep, I'm still under warranty. Good to know about non-Airstream techs, I just requested an appointment at the AS dealer, hopefully they can get it done quickly.
Thanks for the help. I'll shoot out an update after its repaired.
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Old 02-26-2016, 09:25 PM   #28
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Quick update: after getting blown off by Airstream of LA ~5 times I reached out to the customer liaison rep (Gretchen Behrs) at Airstream who made no sincere attempt to help aside from pointing me to the Dometic site and saying it was probably just a breaker. I've been asking for a contact at AS to discuss my concerns and problems but she stopped responding, complete fail.
Finally I reached out to a authorized Dometic mobile RV guy who seemed to know his stuff, he came out when he said he would and confirmed my diagnosis that I had a refrigerant leak. Replacement unit should've arrived today and I'm waiting to sync up w him to get it installed. As far as I'm concerned, the AS factory warranty is not worth a cent, perhaps that opinion will change but it seems like they(Airstream) provide the bare minimum warranty to justify the exorbitant cost of their trailers. Yeah I'm salty right now but rightfully so.

Thanks for all the help everyone.
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