Haier air conditioner F1 code: ipm inverter module protection (split)

On inverter split units, the outdoor unit's power module (IPM) that drives the compressor has shut down to protect itself. Power problems, an overheated or blocked outdoor unit, or a failed module are the usual causes.

Likely causes

Listed from most to least common.

1. Supply voltage too high or too low
2. Outdoor unit blocked by leaves, snow or plants, so it overheats
3. Outdoor fan not running
4. IPM module or outdoor control board failed
5. Compressor fault

How to fix the F1 code

Unplug the air conditioner or switch it off at the breaker before removing any panel or filter.

1. 1

   Step 1: Turn the system off

   Switch the AC off with the remote, then turn off its breaker.

2. 2

   Step 2: Clear around the outdoor unit

   Remove leaves, snow, plants and stored items. Keep at least 2 feet (60 cm) of clear space around it.

3. 3

   Step 3: Reset the power

   Leave the power off for 10 minutes, then turn it back on and restart the AC.

You'll need: Gloves.

When to call a technician

If F1 returns, a licensed HVAC technician needs to test the IPM, outdoor board and compressor. Do not open the outdoor unit's electrical panel.

A typical repair for this code costs $300–$900 in the US, including parts and labor. Prices vary by area and model.

Models this applies to

• Ductless mini-split and wall-mounted split ACs
• Inverter split heat pumps
• Portable air conditioners (US, 2017 and newer)

Codes can differ slightly between models. Your owner's manual is the final word and is available from Haier support.

Common questions