Lennox mini split systems are an excellent way to provide compact, yet powerful 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 piece of HVAC equipment 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. Recognizing what these codes mean can help you kickstart mini split repair, especially if professional help is required.
What the error code means will ultimately rely 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 JTech Mechanical. Our technicians are trained to recognize these codes in order to deliver prompt mini split repair in Magnolia. Give us a call at 281-231-8768 to schedule an appointment.
Common Lennox Mini Split Error Codes
While error codes may differ from model to model, there are some codes you’ll be more likely to see. To learn what your error code could 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 strange noise coming from a key 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 might be facing intermittent connection issues or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will not be able to adequately 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 JTech Mechanical 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 may also represent voltage issues. In other cases, it’s alerting 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 could also be a problem 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, found within the outdoor unit. When the compressor drive is faulty, 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 damaged, a P6 error code is common.
When temperatures exceed safe levels, a safety switch will protect the electrical components of your mini split system, including any components that control the outdoor compressor. If this switch is open, the P6 code could appear. You may also find the P6 code if the compressor is facing high or low pressure issues.
Check the Manual for Your Specific Model
Remember 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 can mean. But as many of these codes stem from electrical problems, professional experience is often needed.
Call JTech Mechanical for Mini Split Repair
JTech Mechanical 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 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 Magnolia, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 281-231-8768 today.