Lennox mini split systems are a solid 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 risk your mini split could malfunction. To determine what is malfunctioning, you’ll want to locate where the mini split error codes are displayed. Knowing what these codes mean can help you kickstart mini split repair, especially if professional help is required.
What any 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 Assured Appliance and Heating & Air. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in Genoa. Give us a call at 847-306-8990 to book an appointment.
Common Lennox Mini Split Error Codes
While error codes can differ from model to model, there are some codes you’ll be more likely to see. To identify what your error code might mean, ask yourself the following:
- Is your model a mini split air conditioner or a mini split heat pump?
- Are there additional signs of what malfunctioned? A loud noise coming from an important component, for example.
Here are a handful of the more common error codes for Lennox mini splits.
E1 – Indoor / Outdoor Unit Communication
In general, an E1 error code signifies that communication between the mini split system’s indoor and outdoor units has been hampered. It could be struggling with intermittent connection problems or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will not be able to effectively balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error can stand for a problem with the system’s voltage. A repair technician from Assured Appliance and Heating & Air may refer to it as overcurrent protection. Both excessively high or low voltage can produce this error code.
For mini split air conditioners, this code may also represent 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 malfunctioning, the most likely culprit is excessively high temperatures. A high temperature at the discharge line may also result in a P4 code.
P6 – Compressor Switch Open or Drive Board Failure
Your mini split system will have computer boards that make sure 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 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 can appear. You may also find the P6 code if the compressor is struggling with high or low pressure concerns.
Check the Manual for Your Specific Model
Keep in mind that in general, error codes are specific to each model of a Lennox mini split system. Your manual will have a guide for these error codes and what they can mean. But as many of these codes refer to electrical problems, professional experience is often required.
Call Assured Appliance and Heating & Air for Mini Split Repair
Assured Appliance and Heating & Air 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 Genoa, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 847-306-8990 today.