Amana AMVC960803BN Error Code None: No Power to Furnace

What Does Code None Mean?

When the 7-segment display on your Amana AMVC960803BN shows nothing at all, the furnace is not receiving electrical power. Without power, the control module cannot run any heating cycle or display diagnostic codes.

The furnace requires both 115V AC power from your home's electrical panel and 24V low-voltage power for the control circuit. A tripped breaker, blown fuse, or turned-off disconnect switch will cut the 115V supply. The furnace also has a door safety switch — if the front access panel is not fully seated, this switch stays open and cuts power to the control module.

If power is confirmed at the furnace but the display remains blank, the integrated control module itself may have failed. This is less common but requires professional diagnosis and replacement.

Common Causes

How to Fix It: Restore Power to the Furnace

What You'll Need

• Flashlight

Steps

1. Turn off power at the breaker and shut off the gas supply valve Locate the furnace circuit breaker in your electrical panel and flip it to OFF. Find the gas shutoff valve near the furnace and turn it perpendicular to the gas pipe (OFF position). If you smell gas at any point, leave your home immediately and call your gas company from outside.
2. Check the circuit breaker and fuse Look at your electrical panel for the furnace breaker. If it is tripped (in the middle position), flip it fully to OFF first, then back to ON. If your panel uses fuses instead of breakers, check for a blown fuse and replace it with one of the same amperage.
3. Check the furnace disconnect switch Many furnaces have a dedicated power switch mounted on or near the unit, often resembling a light switch. Make sure it is in the ON position. This switch is sometimes accidentally turned off during maintenance or cleaning.
4. Verify the furnace door panel is fully closed The Amana AMVC960803BN has a door safety switch that cuts power when the front access panel is removed or not fully seated. Push the panel firmly into place until you hear or feel it click. The panel must be completely flush for the switch to engage.
5. Restore gas and power, then check the display Turn the gas supply valve back to ON (parallel to the pipe). Flip the circuit breaker to ON. The 7-segment display on the control module should illuminate within a few seconds, indicating the furnace has power.

When to Call a Professional

Contact a licensed HVAC technician if:

• The circuit breaker trips again immediately after resetting
• The disconnect switch and breaker are both ON but the display remains blank
• The furnace door panel is fully closed but the display still shows nothing
• You notice a burning smell or see scorch marks near the control board
• You are unsure whether the electrical supply to the furnace is correct

✓ Verified against manufacturer service manual — March 2026