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Ambient Temperature Sensor: Notes

The thermometer function is supported by the ambient temperature sensor, a wiring circuit, and the compass/temperature display unit.

If the display shows OC (-49°F (-45°C) or SC (140°F (60°C), there is an OPEN or SHORT CIRCUIT and it must be repaired before the VFD can be tested.

The ambient temperature sensor circuit can also be diagnosed using the following Sensor Test, and Sensor Circuit Test. If the temperature sensor and circuit are confirmed to be OK, but the temperature display is inoperative or incorrect, replace the compass/temperature display.

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