Coleman TSR Rooftop AC issue

[nhubb]

I have a coleman TSR roftoop ac that works great when connected to shore power. I have been using a 3,500 watt generator to power the ac. Now all the sudden the ac is drawing over 4,000 watts of initial power when starting up the ac and it then overloads my generator. I am trying to figure out why the ac is all the sudden drawing such a crazy high load when it used to just draw a max power of maybe 2200 watts.

[wa8yxm]

Does it overload IMMED on start up or does it take a minute or 3?

If the latter: How long since you cleaned the condenser coils?

I have had 4 A/Cs on my RV 2 Carriers, now deceased, an Advent Air (Dometic knockoff I'm told) and now a Carrier.. all but the Coleman (and that's just luck) have tripped their 20 amp branch breakers when the condenser clogged. The only reaosn and I mean the ONLY reason the Coleman has not is the Advent beat i to it and when I went up to clean it I thought.. "While I'm up here might as well check" and sure enough,, it was clogged with Cottonwood "Cotten" too.

But if it's overloading on startup.. See the above responses.

[newman_fulltime]

or the unit is froze up and creating to much head pressure

[ScottG]

Yep, start cap(s) getting leaky.
Replacement is cheap and easy and should be done automatically every 10 years or so. (Just like residential units.)

[jfkmk]

Could be the starting capacitor.