Atwood Refrigerator Error Code CHECK FLASH + TEMP1-5 FLASH

This error code means the control board has detected that one of the thermistors (temperature sensors) is either open-circuit or short-circuit. The number displayed alongside TEMP identifies which sensor is affected. The refrigerator automatically switches to a backup temperature control mode so it continues running, but accurate temperature regulation depends on resolving the thermistor fault.

The refrigerator can continue operating in backup temperature control mode, so it is not immediately dangerous. However, without accurate thermistor feedback, the unit may not maintain precise temperatures, which could affect food safety over time. It is best to diagnose and repair the fault as soon as possible rather than relying on the backup mode indefinitely.

If the repair only involves reseating a loose connector or cleaning corroded terminals, there may be no parts cost at all. A replacement thermistor typically falls in the range of $15 to $50 depending on the specific sensor and sourcing. If the control board input circuit is damaged and the board requires replacement, costs can range from $100 to $300 or more including labor.

A power reset may temporarily clear the displayed error, but if the thermistor or its wiring is genuinely faulty, the code will return once the control board re-evaluates the sensor circuit. The underlying cause at connector J10-1 or the thermistor itself must be corrected for the error to clear permanently.

Start by checking the thermistor connector at J10-1 on the control board for loose, corroded, or damaged terminals. If the connection looks secure, measure the thermistor's resistance to determine whether the sensor itself has failed open or shorted. Replace the thermistor if resistance is out of range, or repair any damaged wiring found along the sensor circuit.