Amana 2 Flashes

What does Amana 2 Flashes mean?

Two red flashes indicate the pressure switch circuit is closed at a time the control expects it to be open, while the induced draft blower is not running. The control reads this contradiction as a fault, typically because the pressure switch contacts are stuck closed or there is a short in the pressure switch circuit.

Symptoms

• Furnace fails to operate
• Integrated control module diagnostic LED flashes two red flashes
• Induced draft blower is not running
• Pressure switch circuit reads closed during standby

Common causes

• Induced draft blower pressure switch contacts sticking closed
• Shorts in the pressure switch circuit
• Induced draft blower not operating

Diagnostic steps

1. 01

   Replace the pressure switch

   Replace the induced draft blower pressure switch with the proper replacement part if its contacts are stuck closed.

2. 02

   Repair the circuit short

   Locate and repair any short in the pressure switch circuit that holds the contacts closed.

3. 03

   Verify induced draft blower operation

   Confirm whether the induced draft blower is running, since the fault appears when the blower is off but the switch reads closed.

4. 04

   Power off before servicing

   Turn power off prior to repair before handling the pressure switch or its wiring.

When to call a professional

This fault involves diagnosing a stuck pressure switch and tracing shorts in low-voltage circuits while the furnace is de-energized. If you are not comfortable testing pressure switch contacts, locating a circuit short, or sourcing the correct replacement part, have a qualified servicer perform the repair. Always turn power off prior to working on the switch or wiring.