Our qualified technicians performed a commercial range hood power supply restoring in Irvine, California. The customer called on saying that their range did not work. Fuse specialists arrived and ran a diagnostic. It turned out that the commercial range hood and ceiling fan were de-energized after overheating or a short circuit. So we did: Program bypassing; HMI modifying; Error clearing; Relay fixing; System testing. After the works performed the range started working perfectly fine again.