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 deliver both heating and cooling.
But no ductless mini split is flawless. There’s always a risk your mini split could malfunction. To identify what is malfunctioning, you’ll want to locate where the mini split error codes are displayed. Knowing what these codes mean can help ensure fast mini split repair, especially if professional help is necessary.
What any code means will ultimately depend on the specific model of your mini split system. You can review your manual to find a guide for what each code means. You can also trust the HVAC pros at J & J Air Conditioning. Our technicians are trained to learn these codes in order to provide prompt mini split repair in Eastland. Give us a call at 254-355-3833 to request 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 encounter. To identify what your error code can mean, consider the following:
- Is your model a mini split air conditioner or a mini split heat pump?
- Are there other signs of what is happening? A loud 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 impeded. It could 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 properly balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error could refer to a problem with the system’s voltage. A repair technician from J & J Air Conditioning may refer to it as overcurrent protection. Both unusually high or low voltage can create this error code.
For mini split air conditioners, this code could also stand for 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 might also be a problem with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will generally be related to your mini splits compressor system, found 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 can also trigger 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 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 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 facing high or low pressure issues.
Check the Manual for Your Specific Model
Don’t forget 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 can mean. But as many of these codes refer to electrical problems, professional experience is typically required.
Call J & J Air Conditioning for Mini Split Repair
J & J Air Conditioning 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 Eastland, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 254-355-3833 today.