418 Error Code For Aultman & Taylor Tractor Models
There are 2 kind of error description.
Water in Fuel sensor indicates the water in the fuel filter needs to be drained.
Water in Fuel sensor (optional) indicates the water in the fuel filter needs to be drained.
If Heater does not work,Low coolant level. Check coolant level; add if necessary, faulty thermostat, heater control valve not functioning properly ,heater core or hoses clogged or damaged. Flush cooling system. See your John Deere dealer or replace heater core or hoses.