Lennox mini split systems are a great way to provide compact, yet powerful temperature control for your home. Some models are built for air conditioning only, while heat pump models can offer both heating and cooling.
But no piece of HVAC equipment is flawless. There’s always a chance your mini split will 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 you kickstart mini split repair, especially if professional help is needed.
What each code means will ultimately depend on the specific model of your mini split system. You can check your manual for a guide for what each code means. You can also trust the HVAC pros at Freed Heating & Air Conditioning. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in Moline. Give us a call at 309-323-9584 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 identify 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 additional signs of what malfunctioned? A loud noise coming from a specific component, for example.
Here are a few of the more common error codes for Lennox mini splits.
E1 – Indoor / Outdoor Unit Communication
In general, an E1 error code means that communication between the mini split system’s indoor and outdoor units has been impeded. It could be experiencing intermittent connection problems or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will be unable to properly balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error could indicate a problem with the system’s voltage. A repair technician from Freed Heating & Air Conditioning may refer to it as overcurrent protection. Both unusually 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, like 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 concerned with your mini splits compressor system, housed within the outdoor unit. When the compressor drive is not working, the most likely cause is excessively high temperatures. A high temperature at the discharge line may also lead to 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 malfunctioning, a P6 error code is common.
When temperatures rise above safe levels, a safety switch should 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 could appear. You may also find the P6 code if the compressor is experiencing high or low pressure issues.
Review the Manual for Your Specific Model
Remember that in general, error codes are specific to each model of a Lennox mini split system. Your manual will provide a guide for these error codes and what they can mean. But as many of these codes refer to electrical problems, professional experience is usually required.
Call Freed Heating & Air Conditioning for Mini Split Repair
Freed Heating & Air Conditioning 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 unique problem.
For some problems, repairs might 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 Moline, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 309-323-9584 today.