Home › Forums › General › hobart h55 error eo1 General hobart h55 error eo1 Posted by icemasternicrefrigeracion on May 13, 2021 at 12:19 am diagram electrical fixbear replied 2 years, 11 months ago 2 Members · 1 Reply 1 Reply fixbear Member May 13, 2021 at 8:42 am There is one inside the machine. EO1 is a fill error. Descale the machine and check the tank sensor, water pressure, and booster for minerals. Log In to Reply Log in to reply. Log In Register Public All Members My Connections Only Me PublicAll MembersMy ConnectionsOnly Me Public All Members My Connections Only Me Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now