Amana AMSS960803BN Error Code 2 Flashes: Pressure Switch Stuck Closed
What Does Code 2 Flashes Mean?
Code 2 (2 Flashes) on the Amana AMSS960803BN means the pressure switch circuit is reading as closed before the induced draft blower begins operating. The pressure switch is a safety device designed to verify that the inducer motor is creating proper airflow to vent combustion gases. If the switch shows closed before the inducer even starts, the control module treats this as an unsafe condition and halts the ignition sequence.
The most common cause is a pressure switch whose internal contacts have physically stuck together. These are mechanical devices that cycle open and closed many times during each heating season, and over time the contacts can wear, corrode, or weld together. When this happens, the switch can no longer accurately report whether the inducer motor is running.
Less commonly, a short circuit in the pressure switch wiring can send a false closed signal to the control board. In either scenario, a technician will need to disconnect and test the pressure switch with a multimeter, inspect the wiring for damage, and replace the faulty component to restore normal operation.
Common Causes
| Cause | Likelihood | DIY? |
|---|---|---|
| Pressure switch contacts stuck closed | Most common | ✗ Call a pro → |
| Short in pressure switch wiring | Uncommon | ✗ Call a pro → |
When to Call a Professional
Contact a licensed HVAC technician if:
- The furnace shows 2 flashes and refuses to start — the pressure switch needs professional diagnosis and likely replacement
- The inducer motor is not running but the control board sees the pressure switch as closed
Sources
✓ Verified against manufacturer service manual — March 2026