Good afternoon,

Our company has an older model MX5500N and it started posting the error code L4-30. I checked each fan motor in SIM 6-2 and they all seem to be working, my only concern is that is that the VFM_C fan seems to running a little slower compared to the others. With all the fans running I was wondering if there may be a faulty sensor for the fan motors that might be tripping this error code. Any information that can be shared in this matter would be helpful. I followed the suggestions from the following conversation on this site from 2009, Sharp MX-5500N Error Code L4-30 before posting a new one. Thank you in advance for any help.

Loren.