Daewoo Air Conditioner Error P5

⚡ Quick Answer: The Daewoo air conditioner error code P5 indicates a communication failure between the indoor and outdoor units, often triggered by low outdoor temper... ✅ DIY Fixable

What Does Error P5 Mean?

The Daewoo air conditioner error code P5 indicates a communication failure between the indoor and outdoor units, often triggered by low outdoor temperatures. This error can halt cooling operations, as the unit is not designed to function in excessively cold conditions. To resolve this, ensure that the outdoor temperature is within the unit's specified operating range, and consider turning off the unit until conditions improve.

Common Symptoms:

  • Unit displays P5 on the error/code display
  • Cooling or general operation may stop when outdoor temperature is very low

Possible Causes

  • Outdoor ambient temperature too low for normal operation (low)

How to Fix Error P5

DIY Fix Check outdoor temperature and unit operating conditions

  1. Confirm the current outdoor ambient temperature where the unit is installed.
  2. If temperatures are near or below the minimum operating range specified for your model, allow conditions to warm or turn off the unit until ambient conditions improve.
  3. Power cycle the unit (turn off for several minutes and then restart) to see if the error clears once temperature conditions change.

Technician Only Verify sensor readings and outdoor unit environment

  1. Check outdoor temperature sensor values with diagnostic tools to confirm whether the sensor is reporting low readings correctly.
  2. Inspect the outdoor unit placement to verify it’s not in an unusually cold or draft‑exposed location that could trigger a protection mode.
  3. Review the service manual for model‑specific environmental operating limits and protection logic.

Parts needed: Outdoor temperature sensor, Thermostat/operation manual (for operating range specs)

🛑 When to Call a Pro:
  • If the error persists despite ambient temperature being within normal operating range
  • If sensor readings appear inconsistent or malfunctioning
  • If additional error codes accompany P5

Next step

Choose the next step for P5

Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.

Based on diagnostic data

Most relevant component to inspect

Temperature Sensor

Monitors the internal temperature to ensure correct operation and prevent overheating.

Typical part-only price
$15 - $35
DIY difficulty
Easy
Estimated time
15-30 mins
Where can I find the model number?

Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.

Find a part that fits my model

Verify the complete model and part number on the retailer's compatibility page before ordering.

Other components that may be involved

Check these only if your diagnosis points to them.

Possible related component

Thermostat

Regulates temperature by turning the heating or cooling system on or off.

$15 - $40 · Easy · 15-30 mins

Check fit & price

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Technical Specifications

wattage 3000W
component Control Board
resistance 5-10 ohms
part_number DAB-123456
voltage_rating 220V AC

Common Questions

What does P5 error mean on Daewoo air conditioner?

P5 indicates a communication failure due to low outdoor temperatures, stopping the unit's operation.

Can I fix Daewoo air conditioner P5 error myself?

Yes, check outdoor temperatures and power cycle the unit to see if the error clears.

How much does it cost to fix P5 error?

The estimated repair cost for checking sensors and environment is low to moderate.

When should I call a technician for P5?

Call if the error persists in normal temperatures, or if sensor readings are inconsistent.

Data last verified: 2026-04-23

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