Amana AMVM970803BN Error Code EE4: Flame Sensed with No Call for Heat

What Does Code EE4 Mean?

Code EE4 means the flame sensor is detecting a flame when there is no call for heat. As a safety response the furnace runs both the induced-draft blower and the circulator blower continuously to clear any combustion, and it will not operate normally until the fault is resolved.

The possible causes all concern the flame-sensing and gas circuits: a short to ground in the flame sensor or its wiring can make the board "see" flame that is not there, and a slow-closing gas valve or a lingering, lazy flame can leave real flame present after the valve should have shut.

Because EE4 involves the gas valve and flame circuit, it is a professional diagnosis. It contrasts with EE0 and EE6, where the problem is too little flame signal; EE4 is the opposite — flame signal present when it should be absent.

What You'll Notice

• Both blowers run continuously even with no call for heat, and the display shows EE4
• The furnace will not follow the thermostat normally
• You may notice the burners staying lit briefly after the cycle should have ended
• Continuous air movement from the registers

Common Causes

How This Is Diagnosed

A technician checks the flame-sensor circuit for a short to ground that would falsely indicate flame, and inspects for a lingering or lazy burner flame. The gas valve is verified for proper, prompt closing.

Because a slow-closing gas valve and flame-circuit faults are safety-critical and involve the gas system, correction is left to a qualified technician — this is not homeowner-serviceable.

When to Call a Professional

This code involves components that are not homeowner-serviceable, so have a licensed HVAC technician diagnose and repair it. Keep in mind:

• Both blowers run non-stop with no call for heat and the display shows EE4
• The burners appear to stay lit after the furnace should have shut off
• The furnace ignores the thermostat

✓ Verified against manufacturer service manual — March 2026