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 deliver both heating and cooling.
But no home comfort system is flawless. There’s always a risk your mini split can malfunction. To find out what happened, 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 necessary.
What the error code means will ultimately depend on the specific model of your mini split system. You can check your manual to find a guide for what each code means. You can also trust the HVAC pros at Hale's Air Conditioning Services Inc. Our technicians are trained to recognize these codes in order to deliver prompt mini split repair in Saint Petersburg. Give us a call at 727-369-6195 to schedule 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 come across. To determine 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 strange noise coming from an important 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 problems or have failed entirely. When the indoor and outdoor units can’t communicate with one another, it will be unable to effectively balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error can stand for a problem with the system’s voltage. A repair technician from Hale's Air Conditioning Services Inc may refer to it as overcurrent protection. Both unusually high or low voltage can produce this error code.
For mini split air conditioners, this code may 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, similar to 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 cause 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 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 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 could appear. You may also find the P6 code if the compressor is experiencing high or low pressure concerns.
Review the Manual for Your Specific Model
Keep in mind that in general, error codes are specific to 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 necessary.
Call Hale's Air Conditioning Services Inc for Mini Split Repair
Hale's Air Conditioning Services Inc can provide 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 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 Saint Petersburg, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 727-369-6195 today.