Air conditioner struggling

samhain7 wrote:
I'm stuck here! 50% say nothing wrong. 50% say something wrong,


Why can't it ever be easy. Lol

Btw. It's night now. Almost the same temp but the unit is now cooling

75 and counting

If you have the unit set on low and the air smells feels damp it is frozen up. You will have to cut it off and just run the fan until it thaws. You most likely have a 13,000btu unit. You could change it to a 15,000. Some newer units perform better than what we are used to in the 13,000 and the 15,000units.
hate to tell you this but you don't have enough cooling capacity. Easily fixed but not inexpensive at a good Dealer and install another unit and maybe upgrading to 50 amp.
Being from Toronto I would think you have a cold weather package which should help with cooling as well as heating but apparently not that much

If you are in direct sunlight then the trailer is going to get hot. Running on 30 amp service and only having 1 AC will not be able to keep the inside cool.

kaydeejay wrote:
... but if the OP is only getting down to 77, then he still has issues/

Maybe, maybe not. The OP has provided so little information it would be impossible to analyze at a distance just why he's not getting the cooling he's expecting. Right now we're experiencing the hottest weather we've had this year here in S Ontario where the OP is located and no doubt everyone camping this weekend that has a rig with A/C is running it full tilt. If we assume his camper is currently sitting in an Ontario provincial park campground the run to the campsite power post could be quite long, easily 100' or more not being uncommon so voltage drop could be significant ... but he hasn't provided this information. Neither has he said anything about what the source voltage actually is, both unloaded and loaded, nor has he given any indication as to what else might be running in the trailer as well as the A/C. He hasn't said exactly when the A/C was initially turned on so we therefore don't know what heat load it may initially have had to deal with, other than to say the trailer was sitting in full sun at the time. A trailer this size, with a 29' box, most likely has a ducted A/C system which can easily not distribute cold air evenly throughout the rig as one would like, often the nature of the beast which can be quite difficult for any dealer to improve upon. None of this is to say he doesn't have an issue with his A/C but this is a 2015 trailer so statistically it's not likely ... rather, it's quite possible the A/C is performing as well as it can under the circumstances and he's just expecting too much from it.

I'm stuck here! 50% say nothing wrong. 50% say something wrong,


Why can't it ever be easy. Lol

Btw. It's night now. Almost the same temp but the unit is now cooling

75 and counting

Golden_HVAC wrote:
31C is about 80F, and the inside should be much cooler.

Hey Fred, your conversions are off a little..... 31C is in fact almost 88F, but if the OP is only getting down to 77, then he still has issues.
BTW, 12F is 7C, not 5.:B

samhain7 wrote:
I don't know what the specs are on my ac unit. But it is around 31 Celsius full sun..

Golden_HVAC wrote:
31C is about 80F, and the inside should be much cooler.

:h Not sure how you came up with that but 31 degree Celsius = 87.8 degree Fahrenheit.

samhain7 wrote:
I don't know what the specs are on my ac unit. But it is around 31 Celsius full sun.. We are in a non shade site. Have the temp set to 71 and we left for the day. Just got back and it is still running and the temp in the trailer is 77.
We are hooked to the 30 amp plug. Is this normal?

31C is about 80F, and the inside should be much cooler.

You might have two problems. If the indoor coil got so cold and froze over, it might indicate low freon change, and running on high fan speed will improve this situation.

You can remove the indoor grill, and look for the evaporator. If covered with ice after running about 3 hours, you either need to find someone who can charge it with freon or replace it.

Also check the inlet air temp to outlet air temp. IT should have a 20F temp drop, or 10C. So if you are getting in 77F, you should be blowing out 57F +/- 2F or 16C with 26C inlet air.

If you are only getting 12F or 5C temperature drop between inlet and outlet air, you are low on freon. If you are getting no cooling at all, then the compressor is not running, and might have a bad relay, bad capacitor, or another problem.

If the fan stops intermittently, while the compressor keeps running, it might have a bad capacitor, or bad bearings. NEVER allow the compressor to run when the fan stops, it will destroy the compressor because it can not get rid of the heat. . .

Good luck,

Fred.

Note to self. Teach wife about this stuff.
I got back to the trailer. She didn't fully reset the breaker. So when she pushed it up. It just want back off.
I pushed it all the way off then back up. No problem.

Do you have a way to tell the voltage on the line. If it is hot and all the others are running their ACs voltage could drop in the park. I have a small voltage meter that just stays in an outlet at all times so I know the voltage inside the MHs.

Turn off everything electric. Then restart the fan only. I'd let that run for 5 full minutes to help cool the unit as much as possible/ If the fan stays on restart the AC. If it trips you have a fault with the AC. It could be a variety of things from low freon to dirty coils to bad condenser to poor electric coming into the trailer.

If everything electric tries to start at the same time (when the breaker is reset) it could be overloading the system

Got a meter to measure the electric at the source ?