| Brand | Compressor Wire Color |
| Atwood Air Commander | BLACK |
| Coleman | PURPLE |
| Dometic | BLUE |
| Furrion | BLUE |
| GE | BLACK |
| Compressor Amps | Temp at A/C Outdoor Coil |
| (Rated Load Amps) – 1 | 65° |
| Rated Load Amps (~ 11 Amps) | 75° |
| (Rated Load Amps) + 1 | 85° |
| (Rated Load Amps) + 2 | 95° |
| (Rated Load Amps) + 3 | 105° |
| (Rated Load Amps) + 4 | 115° |
A/C runs but doesn’t cool (Low Refrigerant Test)
| Brand | Compressor Wire Color |
| Coleman | Purple |
| Dometic | Blue |
| Furrion | Blue |
| GE | Black |
| Compress Amps | Temperature at AC Outdoor Coil |
| (Rated Load Amps) – 1 | 65° F |
| Rated Load Amps (~11 amps) | 75° F |
| (Rated Load Amps) + 1 | 85° F |
| (Rated Load Amps) + 2 | 95° F |
| (Rated Load Amps) + 3 | 105° F |
| (Rated Load Amps) + 4 | 115° F |
- Perform Delta T test, Record your measurements & results
- Record outside temp
- Find the RLA (Rated Load Amp) on the data tag
- This is the the expected amp draw of the model at 75° F and 50% Humidity it will vary from model to model
- As a rule of thumb the RLA will go up or down 1 Amp for every 10°
- Take an amp draw after 15 minutes of compressor running
Your Delta 20 should be at least 20° and your amperage on the compressor wire should be pretty close to the RLA for your given temperature.
If your Delta 20 is below 20°, and the amp draw is significantly lower than expected this indicates a refrigerant leak.
Causes:
1, dirty coils and air filters
- re-circulation of cold air into the return side of the air conditioner
- using automatic or low fan speeds in higher humidity and ambient temperatures
- restricted ducting or restriction in air flow
- air-conditioner empty or low on charge
- freeze control defective or improperly placed
