E7 error appears, often accompanied by failure to build pressure or erratic temperature control.

Safety first: Disconnect power before opening the housing.

• 1. Allow full dry-out: If E7 appeared after heavy steam use or washing, leave the cooker unplugged with the lid open for 24 hours to allow internal moisture to evaporate.
• 2. Locate ambient sensor: On many PowerXL models, a small NTC sensor is mounted near the control board or air vents to monitor internal ambient temperature. Inspect it for broken leads or corrosion.
• 3. Check sensor connection: Ensure the sensor plug is firmly seated on the control board. Disconnect and reconnect to wipe oxidation from the contacts.
• 4. Measure resistance: Test the sensor with a multimeter at room temperature. Compare to typical NTC values (often tens of kilo-ohms). An open or near-zero reading indicates failure.
• 5. Replace ambient sensor: Install a new ambient temperature sensor if defective. If the sensor is integrated into the control board and not replaceable separately, the entire board must be replaced.
• 6. Verify ventilation: Ensure the cooker’s side and bottom vents are not blocked. Overheating the electronics compartment can trigger sensor faults.