Amana Air Conditioner Error NP

⚡ Quick Answer: The Amana Air Conditioner NP error code indicates a door or window lockout condition, preventing the unit from cooling effectively. This can happen if... ✅ DIY Fixable

What Does Error NP Mean?

The Amana Air Conditioner NP error code indicates a door or window lockout condition, preventing the unit from cooling effectively. This can happen if the door or window switch is open, signaling the unit to halt operation for safety reasons. Symptoms include the air conditioner running in diagnostic mode and failing to blow cool air when doors or windows are open. Ensure all nearby doors and windows are securely closed to resolve this issue.

Common Symptoms:

  • Air conditioner runs or enters diagnostic mode and displays NP
  • Unit will not blow cool air or operate fully when door/window is open

Possible Causes

  • Open door or window lockout switch active (LS & INN open) (medium)

How to Fix Error NP

DIY Fix Check and close doors/windows

  1. Ensure all room doors and windows near the air conditioner are fully closed
  2. Check for any mechanical switches or magnetic reed switches near windows/doors that might be part of the unit’s safety Interlock
  3. If your model has a configuration to ignore the door/window lockout, consult the manual to adjust settings

Technician Only Inspect and verify door/window switch circuitry

  1. Power off the unit and inspect the door/window interlock wiring (LS & INN lines) for continuity
  2. Verify that the switches close when doors/windows are shut
  3. Replace any failed switches or repair wiring as needed
  4. Test the unit to confirm NP clears once switches are closed

Parts needed: Door/window switches, Wiring harness connectors

🛑 When to Call a Pro:
  • If closing doors/windows does not clear the NP code
  • If wiring or switches appear physically damaged and are beyond simple user inspection

Technical Specifications

wattage 2000W
component Compressor
resistance 5-10 ohms
part_number P123456789
voltage_rating 240V AC

Common Questions

What does NP error mean on Amana Air Conditioner?

The NP error indicates a door or window lockout, preventing cooling.

Can I fix Amana Air Conditioner NP error myself?

Yes, check and close all nearby doors and windows to resolve the NP error.

How much does it cost to fix NP error?

Repair costs range from $10-$60 for switches; labor costs vary.

When should I call a technician for NP?

Call if closing doors/windows doesn’t clear the NP code or if you find damaged wiring.

Sources & References

Data last verified: 2026-01-25

User Comments (0)

Share your experience or solution below.

Be the first to comment!