Whirlpool AC Error Code List

Whirlpool air conditioners are known for their reliability and performance, but like any electronic device, they can experience occasional glitches. When something goes wrong, your AC might display an error code to help you identify the issue. Understanding these error codes can save you time, money, and frustration.

In this guide, we’ll break down Whirlpool AC error codes, their possible causes, and practical solutions. Whether you’re an experienced technician or a curious homeowner, this easy-to-follow guide has you covered!

Why Error Codes Matter

Error codes are your AC’s way of communicating when something isn’t right. Instead of manually checking every component, you can quickly pinpoint the problem by decoding the error. Some issues are minor and can be fixed by you, while others may require professional intervention.

Let’s dive into the most common Whirlpool AC error codes, what they mean, and how you can fix them.

Whirlpool AC Error Codes List

Here’s a handy table to quickly reference common error codes, their causes, and potential fixes:

Error Code	Description	Possible Causes	Suggested Solutions
UA	Indoor and outdoor unit setting mismatch	Incorrect configuration or compatibility issue	Verify compatibility and correct settings
E6	Communication malfunction	Wiring issues or damaged connectors	Inspect communication wiring and fix any issues
PL	DC input voltage too low	Power supply issue	Check power source; ensure stable voltage
PH	DC input voltage too high	Overvoltage in the power supply	Regulate voltage; consult an electrician
F0	Low refrigerant or system blockage	Refrigerant leak or blockage in pipes	Inspect for leaks, refill refrigerant if needed
P7	Temperature sensor malfunction (carbon fin)	Faulty or disconnected sensor	Check and replace the sensor if necessary
H4	System overload	Overheating due to heavy load	Reduce cooling load or adjust room insulation
H6	No motor feedback from indoor unit	Faulty indoor fan motor	Inspect fan motor and replace if needed
F2	Indoor pipe temperature sensor malfunction	Sensor issue or faulty wiring	Test and replace the sensor
F1	Indoor ambient temperature sensor malfunction	Sensor issue	Check sensor connection and functionality

Common Whirlpool AC Error Codes Explained

1. Error Code UA: Indoor and Outdoor Unit Mismatch

What it Means: Your indoor and outdoor units are not correctly synchronized, possibly due to incorrect configuration.

Possible Causes:

• Incompatible units
• Incorrect setting during installation

Solution:

1. Double-check the compatibility of the indoor and outdoor units.
2. Reset and configure them according to the user manual.
3. If the issue persists, consult a technician.

2. Error Code E6: Communication Malfunction

What it Means: This indicates a failure in communication between the indoor and outdoor units.

Possible Causes:

• Loose or damaged communication wires
• Faulty circuit boards

Solution:

1. Inspect the communication cable for any signs of wear or disconnection.
2. Tighten any loose connections.
3. Replace the cable or circuit board if necessary.

3. Error Code PL: Low DC Input Voltage

What it Means: The AC unit is not receiving sufficient voltage to operate.

Possible Causes:

• Unstable or insufficient power supply
• Loose power connections

Solution:

1. Check your power supply and ensure that it meets the AC’s voltage requirements.
2. Tighten any loose power connections.
3. If the problem is external (e.g., power grid issues), consider installing a voltage stabilizer.

Data-Rich Table: Power Supply-Related Error Codes

Error Code	Cause	Impact	Solution
PL	Low input voltage	Reduced cooling performance	Check power source and connections
PH	High input voltage	Potential damage to electrical components	Regulate power supply with a voltage stabilizer
E5	Overcurrent protection	Possible short circuit or overload	Inspect for shorts; ensure proper load capacity
H3	Compressor overload	Overheated or overworked compressor	Check refrigerant levels and airflow

4. Error Code F0: Lack of Refrigerant or System Blockage

What it Means: Your AC system might be low on refrigerant or have a blockage that prevents the refrigerant from circulating properly.

Possible Causes:

• Refrigerant leaks
• Obstructions in the piping

Solution:

1. Check for visible signs of refrigerant leaks (e.g., oily residue around pipes).
2. Clear any blockages in the system.
3. Refill the refrigerant to the required level.
4. Call a professional if you suspect a major leak.

5. Error Code H6: Indoor Fan Motor Malfunction

What it Means: The indoor fan motor isn’t providing the necessary feedback to the system.

Possible Causes:

• Faulty fan motor
• Disconnected or damaged wiring

Solution:

1. Inspect the fan motor for signs of damage.
2. Check the wiring and connectors.
3. Replace the fan motor if necessary.

Sensor-Related Error Codes

Error Code	Affected Sensor	Possible Issue	Solution
P7	Carbon fin temperature sensor	Sensor malfunction or disconnection	Inspect and replace the sensor
F2	Indoor pipe temperature sensor	Faulty wiring or defective sensor	Test and replace the sensor
F1	Indoor ambient temperature sensor	Sensor damage or disconnection	Reconnect or replace the sensor
F3	Outdoor ambient temperature sensor	Malfunction due to environmental factors	Clean or replace the sensor

6. Error Code H4: System Overload

What it Means: Your AC system is experiencing an overload, possibly due to high cooling demand or improper operation.

Possible Causes:

• Excessive cooling load
• Poor room insulation
• Dirty filters

Solution:

1. Reduce the cooling load by closing doors and windows.
2. Ensure proper insulation to prevent heat gain.
3. Clean or replace air filters.

7. Error Code F3: Outdoor Ambient Temperature Sensor Malfunction

What it Means: The sensor monitoring the outdoor temperature is malfunctioning, affecting the AC’s ability to regulate performance.

Possible Causes:

• Environmental factors (dust, dirt)
• Sensor failure

Solution:

1. Clean the sensor to remove any dirt or debris.
2. If cleaning doesn’t help, replace the sensor.

Quick Troubleshooting Checklist

If you encounter an error code and don’t know where to start, follow this quick checklist:

1. Restart the System: Turn off the power for 5-10 minutes and restart.
2. Inspect Wiring: Look for any loose or damaged wires.
3. Clean Filters: Dirty filters can trigger multiple error codes.
4. Check Power Supply: Ensure the AC is getting adequate and stable voltage.
5. Refer to the User Manual: The manual may have model-specific instructions.
6. Call a Technician: If the problem persists, contact a professional.

When to Call for Professional Help

While some minor issues can be fixed by following the steps above, there are situations where professional help is necessary:

• Persistent error codes despite troubleshooting
• Refrigerant leaks
• Electrical issues such as overcurrent or power surges
• Compressor malfunctions

In such cases, reach out to a certified Whirlpool technician to avoid further damage to your unit.

Final Thoughts

Whirlpool AC error codes don’t have to be overwhelming. With this guide, you now have a solid understanding of common codes, their causes, and practical solutions. By being proactive and addressing issues early, you can keep your AC running smoothly and efficiently.

If in doubt, remember that professional help is just a call away. Stay cool and enjoy the comfort of your Whirlpool air conditioner!