LI OP means "line open" I believe. When our 1210 did this, we had to replace the cooling unit. The boiler was oozing yellow fluid and it was shot. No fix for it, ours anyway. In our case, the switch kicked out which was what it was supposed to do to prevent a possible fire. We had a replacement cooling unit put in by
National Refrigeration in Shipshewana.
You may call Leon, the young Amish owner, and talk with him. He will give you information you can trust. If he doesn't answer, leave a message and he will return your call. He works alone, so doesn't have anyone to answer the phone.
Our has worked flawlessly since his rebuild was installed. . . better even than before. He is an approved Norcold and Dometic service and Good Sam Extended Warranty worked.
Dale
