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 home comfort system is flawless. There’s always a possibility your mini split could malfunction. To identify what went wrong, you’ll want to locate where the mini split error codes are displayed. Recognizing what these codes refer to 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 E.B. Air, LLC. Our technicians are trained to recognize these codes in order to ensure prompt mini split repair in East Bernard. Give us a call at 979-335-4262 to request 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, consider 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 an important 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 indicates that communication between the mini split system’s indoor and outdoor units has been impeded. It may be struggling with 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 stand for a problem with the system’s voltage. A repair technician from E.B. Air, LLC 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 could 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 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, housed within the outdoor unit. When the compressor drive is malfunctioning, the most likely cause is excessively high temperatures. A high temperature at the discharge line could also trigger 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 malfunctioning, 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 may appear. You may also find the P6 code if the compressor is facing high or low pressure issues.
Consult 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 offer a guide for these error codes and what they should mean. But since many of these codes refer to electrical problems, professional experience is often needed.
Call E.B. Air, LLC for Mini Split Repair
E.B. Air, LLC can deliver 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 identify 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 East Bernard, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 979-335-4262 today.