Tag: indoor-heat-exchanger-thermistor-fault

All the articles with the tag "indoor-heat-exchanger-thermistor-fault".

• Daikin C4 Error Code — Indoor Heat Exchanger Thermistor Fix

  21 May, 2026

  Daikin C4 means the indoor heat-exchanger thermistor (R2T or the equivalent coil sensor depending on platform) reads open, shorted, or out of the expected...