Air conditioner struggling

down home wrote:
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.

I've never seen nor heard of a 13K BTU roof mounted A/C unit and the OP's trailer being a conventional 30' travel trailer almost certainly has a 13.5K BTU unit. Being a 2015 model that A/C unit will almost certainly be either the latest version of Coleman or DuoTherm Brisk II with as much efficiency as one can expect from these units. Could it have frozen up? ... sure it could, just as any of these units could freeze up, but 31 Celcius is hardly an extreme condition, not anything like 110F in Texas during the summer, so though not impossible it's unlikely this is the OP's problem.

hate to tell you this but you don't have enough cooling capacity.

In a 30' unit that's certainly possible if it's a 13.5K BTU unit, especially if it's ducted (which it almost certainly is) but the OP hasn't provided any information at all as to exactly which unit he has nor it's specifications so any speculation at this point is just that - speculation.

Easily fixed but not inexpensive at a good Dealer and install another unit and maybe upgrading to 50 amp.

Sure, upgrading a 13.5K BTU unit to a 15K BTU unit can easily be done, though costly, but upgrading any rig wired with 30 amp main service to 50 amp main service just isn't practical at all, not to mention the cost as it would mean major changes to the coach's electrical system. Remember, 50 amp service is not 50 amps across a single leg as 30 amp service is 30 amps across one leg, it's 50 amps each across two legs, or a total of 100 amp service ... entirely different. Aside from that, the OP is here in Ontario and from what I understand frequently camps in the Ontario provincial park system where 50 amp service is quite rare in most parks, in which case there would be little advantage anyway in upgrading any coach wired with 30 amp service to 50 amp service - just makes no sense at all.

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

Good grief, I see the old image of Canadians living in igloos still prevails. :S There's no more reason for any recreational vehicle sold or used here to be equipped with a cold weather package than anywhere else in N America. The rigs we buy are the same as those sold stateside, the only differences being any units imported into Canada must meet Canadian standards in terms of the electrical and gas systems.

Bottom line - this is a 2015 30' trailer with the latest version of what is likely a 13.5K BTU A/C which is doing it's darndest to cool this rig which is sitting in full sun on the hottest weekend we've had so far this year here in S Ontario. If the OP is camped at an Ontario provincial park where the run to the campsite power post may be quite long he may be experiencing a significant voltage drop which in turn will prevent his A/C unit from performing to maximum efficiency. My bet is just what I said earlier - under these conditions he's probably expecting too much from his A/C unit.