Lennox mini-split systems are an excellent way to provide compact, yet effective temperature control for your home. Some models are built for air conditioning only, while heat pump models can deliver both heating and cooling.
But no ductless mini-split is flawless. There’s always a risk your mini-split could malfunction. To determine what is malfunctioning, you should locate where the mini-split error codes are displayed. Knowing what these codes refer to can help ensure fast mini-split repair, especially if professional help is necessary.
What the error code means will ultimately depend on the specific model of your mini-split system. You can consult your manual to find a guide for what each code means. You can also call the HVAC pros at Myers Furnace Company. Our technicians are trained to recognize these codes in order to deliver prompt mini-split repair in Belton. Give us a call at 816-249-1619 to schedule an appointment.
Common Lennox Mini-Split Error Codes
While error codes will differ from model to model, there are some codes you’ll be more likely to see. To determine what your error code can mean, ask yourself the following:
Is your system a mini-split air conditioner or a mini-split heat pump?
Are there other signs of what is happening? A loud noise coming from a specific component, for example.
Here are some of the more common error codes for Lennox mini-splits.
E1 – Indoor / Outdoor Unit Communication
In general, an E1 error code indicates that communication between the mini-split system’s indoor and outdoor units has been hampered. It might be facing intermittent connection issues or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will be unable to adequately balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini-split heat pump, an E5 error can refer to a problem with the system’s voltage. A repair technician from Myers Furnace Company may refer to it as overcurrent protection. Both excessively high or low voltage can result in this error code.
For mini-split air conditioners, this code can also stand for voltage issues. In other cases, it’s pointing you to a circuit problem with the outdoor temperature sensor.
E6 – Indoor / Outdoor Unit Communication
An E6 error code can also refer to a communication problem between the two units, similar to an E1 code. It may also be an issue with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will generally be related to your mini-splits compressor system, located within the outdoor unit. When the compressor drive is not working, the most likely culprit is excessively high temperatures. A high temperature at the discharge line may also trigger a P4 code.
P6 – Compressor Switch Open or Drive Board Failure
Your mini-split system will have computer boards that ensure the indoor and outdoor units can communicate with one another. If the drive board is faulty, a P6 error code is common.
When temperatures rise above safe levels, a safety switch will protect the electrical components of your mini-split system, including any components that manage the outdoor compressor. If this switch is open, the P6 code may appear. You may also find the P6 code if the compressor is facing high or low pressure issues.
Review the Manual for Your Specific Model
Don’t forget that in general, error codes are different for each model of a Lennox mini-split system. Your manual will provide a guide for these error codes and what they should mean. But because many of these codes stem from electrical problems, professional experience is often required.
Call Myers Furnace Company for Mini-Split Repair
Myers Furnace Company can offer fast and affordable ductless mini-split repair. Whether you own a mini-split AC system or a mini-split heat pump, our technicians can quickly diagnose your specific problem.
For some problems, repairs may not be worth it. But that doesn’t mean the mini-split replacement process has to be stressful. We can provide equally effective mini-split installation in Belton, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 816-249-1619 today.