Air conditioning
Can you tell me how often an air conditioner unit should have to be charged? My old trailer never had to be charged. This 5th wheel, which is only 2 and a half years old is just blowing cool air. No...
Forum Discussion
dougrainer wrote:
If you have a leak, then the odds are ALL the coolant has leaked out and it would no cool at all. They only hold 1 lb of coolant and most leaks would allow that small amount to completely be gone. You need ALL parameters checked
1. Evaporator cleaned
2. Condensor cleaned
3. air filter/s cleaned
4. Once that is done you need a AMP draw test based on ambient to determine the state of charge and the condition of the compressor. This is the ONLY way to determine the state of charge on a RV AC unit. Doug
Doug,
Are the rooftop units now being charged with R410A and if so, does the Amp draw check apply to them or only R22 units. My marine units have been coming out with R410A for several years but I'm just starting to see them. That refrigerant is a whole different animal. You can't charge to a range of pressures like with R22 so if you are in a situation where you can't weigh the charge, they have to be charged by superheat.
