Amana Error Code 2R: Pressure Switch Stuck Closed

Severity
Warning
Type
digital display
Estimated repair cost: $75 — $200 (parts + labor)
Warning: Your furnace has detected a problem with its pressure switch and has shut down as a safety precaution. This will require diagnosis and repair to restore heat.

How to Fix Amana Code 2R

  1. Step 1: Check the furnace exhaust vent outside your home for any obvious obstructions like snow, ice, or debris. Clear any blockage if safely accessible from the ground.
  2. Step 2: Ensure all furnace access doors are properly closed and sealed. A loose door can affect airflow.
  3. Step 3: Try resetting the furnace by turning off the power at the breaker for a few minutes, then turning it back on. This might clear a temporary fault.
  4. Step 4: If the error persists after these steps, contact a qualified HVAC technician for diagnosis and repair.

How to Reset Amana Code 2R

  1. Turn off the furnace power switch, usually located on or near the unit.
  2. Turn off the circuit breaker for the furnace. Wait 30 seconds.
  3. Restore power at the breaker and flip the furnace switch back on.
  4. Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.

Resetting clears the code from the display but does not fix the underlying fault. If the code returns after reset, proceed to the diagnostic steps above.

What Does Amana Error Code 2R Mean?

The "2R" error code on your Amana furnace indicates the control board thinks the pressure switch is stuck in the closed position. This switch is designed to prove that the combustion blower is working correctly and moving enough air to safely vent exhaust gases outside. When the furnace starts, the pressure switch should be open, and then close once the combustion blower creates sufficient draft. If the control board sees the switch closed *before* the blower starts, or remaining closed when it should be open, it assumes something is wrong and shuts down to prevent a potentially hazardous situation. This could mean a faulty switch, a problem with the venting, or even an issue with the control board itself.

Common Causes

  • Blocked vent pipe or flue, causing pressure to remain high.
  • Faulty pressure switch that is stuck closed.
  • Wiring issue with the pressure switch or its connection to the control board.
  • Malfunctioning combustion blower not creating enough draft.
  • Defective control board incorrectly reading the pressure switch status.

Diagnostic Steps

If... Check Expected
Furnace is off and cool Measure resistance across the pressure switch terminals with a multimeter Should be open (infinite resistance). If closed (near 0 ohms), switch is likely stuck.
Switch is open when furnace is off Start a heating cycle and measure voltage to the combustion blower motor Should receive proper voltage (typically 120VAC). No voltage indicates a blower motor or control board issue.
Blower motor is receiving voltage Measure the pressure at the pressure switch port with a manometer during furnace operation Should read a negative pressure within the manufacturer's specified range (e.g., -0.3 to -0.8 inches of water column).
Pressure switch tests good Inspect wiring harness between pressure switch and control board for continuity No breaks in the wire; proper connection to the control board

Applicable Amana Models

Replacement Parts

Part OEM Number Est. Cost Where to Buy
Pressure Switch 0130F00034 — Find Part
Combustion Blower Motor 7021-11185 — Find Part
Integrated Furnace Control (IFC) Board — — —

Related Codes on Same Models

Other codes that affect the same Amana model families as 2R.

Code Description Severity
10R Communication Error Warning
1R Flame Without Call Critical
3R Pressure Switch Open Warning
4R High Limit / Rollout Critical
5R Ignition Lockout Critical
6R Gas Valve Relay Fault Critical
7R Low Flame Signal Critical
8R Reversed Polarity Critical
9R Blower Motor Fault Warning