Lennox mini split systems are a solid way to provide compact, yet effective temperature control for your home. Some models are built for air conditioning only, while heat pump models can provide both heating and cooling.
But no home comfort system is flawless. There’s always a chance your mini split could malfunction. To determine what went wrong, you should locate where the mini split error codes are displayed. Understanding what these codes mean can help ensure fast mini split repair, especially if professional help is necessary.
What each code means will ultimately rely on the specific model of your mini split system. You can review your manual for a guide for what each code means. You can also contact the HVAC pros at Fleming Heating & Air Conditioning Inc. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in South Beloit and Belvidere. Give us a call at 877-389-2465 to book 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 encounter. To identify 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 other signs of what is happening? 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 means that communication between the mini split system’s indoor and outdoor units has been disrupted. It could be struggling with intermittent connection issues 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 may indicate a problem with the system’s voltage. A repair technician from Fleming Heating & Air Conditioning Inc 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 may 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 might 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 malfunctioning, the most likely reason is excessively high temperatures. A high temperature at the discharge line could also lead to 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 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 can appear. You may also find the P6 code if the compressor is experiencing high or low pressure concerns.
Consult the Manual for Your Specific Model
Keep in mind 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 because many of these codes start with electrical problems, professional experience is usually needed.
Call Fleming Heating & Air Conditioning Inc for Mini Split Repair
Fleming Heating & Air Conditioning Inc 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 specific 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 South Beloit and Belvidere, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 877-389-2465 today.