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Designer Series Thermistor Faults | Zone 3 | Evaporator Thermistor Unstable | Error 10 3 12

Topics:

  • What is error code 10 3 12 on a Designer model?
  • Designer series shows 10 3 12
  • 10 3 12
  • Zone 3 evaporator thermistor unstable

Cause:

  • Zone 3 evaporator thermistor unstable

Troubleshooting:

  1. Turn the home circuit breaker to the unit off for 30 seconds then back on again.
  2. Retest the unit operation. If the unit operates without any further errors, no action is required.
  3. If these troubleshooting steps do not resolve the issue, service is necessary to expertly diagnose and repair the product. Contact Factory Certified Service to schedule an appointment for repair.

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