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e10821 Error Code For UTB/Universal Tractor Models

There is 1 kind of error description.

Description:

Lower Valve calibration value is too high. (valve problem)

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.

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