Amana AMVM970803BN Error Code E17: Supply Air Temperature Sensor Open (External)
What Does Code E17 Mean?
Error code E17 on the Amana AMVM970803BN indicates the external supply air temperature sensor circuit is open. The control board cannot read a valid temperature from this sensor, so the supply air temperature will not be visible in the CoolCloud HVAC App. The furnace should continue to operate normally while this code is active.
The supply air temperature sensor measures the temperature of air leaving the heat exchanger and entering the supply duct. It uses a 10k-ohm thermistor that should read approximately 10,000 ohms at 77°F. An open circuit means the sensor probe is disconnected, the connector is not fully inserted, the connector crimp has failed, or the sensor itself has failed and is measuring an out-of-range resistance.
A technician should verify the external supply air sensor probe is fully plugged into its connector, check that the connector pins are properly crimped, and measure resistance across the sensor probe at a known temperature. If resistance does not match the 10k-ohm specification at 77°F, the probe must be replaced. If the probe and wiring are correct, the PCB may need replacement.
Common Causes
When to Call a Professional
Contact a licensed HVAC technician if:
- E17 persists after confirming the sensor probe is fully seated — a technician must test the connector crimp and measure sensor resistance
- If the sensor probe measures significantly different from 10k ohm at 77°F, the probe must be replaced
- If the sensor and connector test correctly but E17 continues, the PCB may require replacement
✓ Verified against manufacturer service manual — March 2026