Coleman Recreational Vehicles are used for camping and cross-country trips. If you're having problems with your Coleman RV’s air conditioning, there are a few things you can do before you take it to a technician. If your RV requires a major repair, it’s best to take it to a repair shop. Minor problems can be fixed with little hassle. You don’t have to be a mechanic to get your air conditioning working again.
Turn on the engine to your Coleman RV. Turn on the air conditioning from the control panel on the front console. Turn the temperature setting all the way down.
Put your hand to the vent to see if air is coming through the system. If air is coming through hot, you have probably lost some refrigerant in the system. If there is no air coming through the vent, have a professional take a look at your unit.
Pop the hood on your Coleman RC and look over the air conditioning compressor. The compressor is on the left side of the engine. Locate the compressor belt on the unit. Make sure the belt isn't damaged or worn. If the belt is worn or broken, replace it.
Remove the low pressure side cap of the compressor. The low pressure side is the smaller of the two steel lines. The cap should be blue. Connect a pressure gauge to the low side.
Check the gauge to make sure that your pressure level is within the “Green” band. If the pressure level is within the green, your AC unit is fully charged. If the air conditioner isn't working and you're in the green, the compressor is dead.
Have the air conditioning unit serviced by a professional if the gauge isn't in the green. This means that your system is not fully charged. Have a technician charge your system.
