Lennox Error Code 233

Suction Temperature sensor on the evaporator coil is not giving expected values for the indicated compressor circuit. Alarming Values: 1 – Open Circuit: Less than or equal to -66°F (res >= 930kohms) 2 – Short Circuit: Greater than or equal to 500°F (res <= 24ohms) 3 – Out of Range: Less than -40°F or greater than 150°F 4 – Dislodged (operational check) If alarm indicates “open”, “short” or “out of range” check sensor and wiring. Alarm clears when in-range condition is detected. If alarm indicates “dislodged”, check that the sensor is installed properly and is seated properly to the fitting and is not loose or improperly installed. Alarm clears on a controller reset.