Forum Discussion
Golden_HVAC
Jul 29, 2013Explorer
You have a very high torque motor in this compressor. So the run capcitor is supposed to stay in the circuit all the time the compressor is running. It is normally oval, and silver, indicating it is a run capacitor, normally with a MFD rating between 20 and 45.
If it had been a start capacitor, it would have a value such as 145-165 mfd and be round, black, and have a circuit that automatically takes the start capacitor out of the circuit within 6 seconds, and it should not draw any amperage once the motor has started.
A amp draw less than 10 amps might indicate a low freon charge. What is the indoor fan amperage? Total amperage is normally 12 - 15 amps.
To check and see if you have a low freon level, also check the temperature "Split". If the temperature in is say 70F and the output is around 50, then the freon level is correct, even if the amperage is a bit low. If the temperature split is only 12F (70 to 58F output) and amperage is low, then you have to find a freon leak, and have it fixed. At the same time, have a fitting welded into the freon tubing to access the freon line to add more freon.
Fred.
If it had been a start capacitor, it would have a value such as 145-165 mfd and be round, black, and have a circuit that automatically takes the start capacitor out of the circuit within 6 seconds, and it should not draw any amperage once the motor has started.
A amp draw less than 10 amps might indicate a low freon charge. What is the indoor fan amperage? Total amperage is normally 12 - 15 amps.
To check and see if you have a low freon level, also check the temperature "Split". If the temperature in is say 70F and the output is around 50, then the freon level is correct, even if the amperage is a bit low. If the temperature split is only 12F (70 to 58F output) and amperage is low, then you have to find a freon leak, and have it fixed. At the same time, have a fitting welded into the freon tubing to access the freon line to add more freon.
Fred.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,348 PostsLatest Activity: Jan 13, 2026