Servis Laser Home › Forums › Public Support Forums › Help And Support › Washing Machine Help Forum › Servis Laser This topic has 1 reply, 2 voices, and was last updated 22 years ago by admin. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts March 20, 2004 at 8:04 am #5248 adminKeymaster Can anybody tell me what the error F4 means on the Servis Laser? washing machine. Many thanks in anticipation Rob March 20, 2004 at 8:23 am #110095 Dave_ConwayParticipant Re: Servis Laser Without the model number I’m assuming it’s the older laser machine. If so it means that there is an “open circuit” in the motor control/motor circuit somewhere. Probably carbon brushes worn down. Dave. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In