Fills ok wash ok at 156 degrees goes into rinse cycle dont seem to have much water comming out shows 0 degrees rinse temp. screen is out so thats not clogged have separate free standing electric heater piped in has been working fine for 5 years that way dont understand 0 degree water temp. on display any help would be great thanks for your time joe

SOURCE: winterizing a LXIH Hobart dish washer

Joe - The main issue is that the builtin booster heater is full of water - it has to be drained - there may be a small drain plug (square-shaped head), if not, you may have to pull loose the heater element to drain the tank. I would pour antifreeze solution in there and also in the wash tank. Unhook the water inlet - you say the machine is hard-plumbed in but mfgr recommends using brauided water hose to connect to water supply. hopefully this helps - I service commercial machines and came across your question and maybe you can ansqwer one of mine - how do I cancel the "delime" indicator? I can't find operators manual. jimmy.

SOURCE: Odd operation

This unit is a sanitizer, not a full fledged dishwasher. It is designed for restaurants and bars where the primary use is washing glassware. The behavior you describe is normal for this model. The manual can be found at the following link:
https://feg.hobartcorp.com/resourcecenter/ProductDocumentation/F34779%20Rev%20B.PDF

SOURCE: winterizing a LXIH Hobart dish washer

hi i am a hobart certified tech the only way to cancel your delime is to cancel this function in the service mode. also you must crack open the fill valve on parker valve and let the water leak out of the bonnet or the valve will split when it freezes