How to troubleshoot a Sumitomo F-20L that won't start?
- JJessica BrooksAug 5, 2025
If your Sumitomo Air Compressor and connected devices aren't starting, first, ensure the power source is switched 'ON' and the power cord is properly connected. Then, check the compressor's circuit breaker and reset it if it has tripped. If the issue persists, or if there's an open fuse in the control circuit, check for any short circuits and replace the fuse.