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 offer both heating and cooling.
But no ductless mini split is flawless. There’s always a chance your mini split can malfunction. To identify what went wrong, you’ll want to locate where the mini split error codes are displayed. Understanding what these codes refer to can help ensure fast mini split repair, especially if professional help is required.
What the error 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 call the HVAC pros at A2Z Air Inc. Our technicians are trained to recognize these codes in order to deliver prompt mini split repair in Boynton Beach. Give us a call at 561-270-6228 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 determine what your error code may mean, consider the following:
- Is your model a mini split air conditioner or a mini split heat pump?
- Are there additional signs of what is happening? A strange noise coming from an important component, for example.
Here are some 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 hampered. It may be struggling with intermittent connection problems 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 could refer to a problem with the system’s voltage. A repair technician from A2Z Air Inc 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 may also indicate 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, similar to an E1 code. It could also be an issue 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, located within the outdoor unit. When the compressor drive is faulty, the most likely cause 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 ensure 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 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.
Consult the Manual for Your Specific Model
Remember that in general, error codes are specific to each model of a Lennox mini split system. Your manual will provide a guide for these error codes and what they should mean. But because many of these codes stem from electrical problems, professional experience is usually necessary.
Call A2Z Air Inc for Mini Split Repair
A2Z Air 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 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 Boynton Beach, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 561-270-6228 today.