If your RV rooftop air conditioner shakes when powered from a battery-powered pure-sine inverter, it could be due to a few potential reasons:
Insufficient power supply: RV rooftop air conditioners typically require a significant amount of power to run. If the battery-powered pure-sine inverter is not supplying enough power or if the battery itself is not providing sufficient current, it can lead to fluctuations in the operation of the air conditioner. This can cause the unit to shake or vibrate.
Voltage fluctuations: Inverters convert DC (direct current) power from the battery to AC (alternating current) power to run devices like air conditioners. However, inverters may not always provide a perfectly stable output voltage. If the voltage output from the inverter fluctuates excessively, it can affect the performance of the air conditioner and result in shaking or vibrations.
Inverter compatibility: Not all inverters are designed to handle the high starting current required by air conditioners. When an air conditioner starts up, it draws a surge of current that is higher than its normal operating current. Some inverters may struggle to supply this surge of current, leading to inadequate power and unstable operation of the air conditioner.
To address these issues, you can consider the following steps:
Ensure that your battery-powered pure-sine inverter is rated to handle the power requirements of your RV rooftop air conditioner. Check the specifications of both the inverter and the air conditioner to ensure compatibility.
Verify that the battery is sufficiently charged and capable of providing the necessary current to the inverter. Low battery voltage or a weak battery can result in inadequate power supply.
Consider installing a dedicated auxiliary battery or a larger capacity battery bank specifically for powering the air conditioner. This can provide a more stable power source and reduce voltage fluctuations.
If the shaking persists despite the above measures, it may be worthwhile to consult an RV technician or an expert in electrical systems to assess the situation and provide further guidance. They can help identify any underlying issues and suggest appropriate solutions.
Remember to prioritize safety when working with electrical systems and consult professionals when necessary.