Lennox mini split systems are a solid 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 piece of HVAC equipment is flawless. There’s always a possibility your mini split will malfunction. To find out what went wrong, you’ll want to locate where the mini split error codes are displayed. Knowing what these codes refer to can help ensure fast mini split repair, especially if professional help is necessary.
What the error code means will ultimately rely on the specific model of your mini split system. You can consult your manual for a guide for what each code means. You can also trust the HVAC pros at Gordon Air Conditioning. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in Crestview. Give us a call at 850-250-0335 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 determine what your error code may mean, ask yourself the following:
- Is your system a mini split air conditioner or a mini split heat pump?
- Are there additional signs of what malfunctioned? A strange noise coming from a specific 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 hampered. It could be experiencing intermittent connection problems 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 can stand for a problem with the system’s voltage. A repair technician from Gordon Air Conditioning may refer to it as overcurrent protection. Both unusually 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, 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 usually be related to your mini splits compressor system, located within the outdoor unit. When the compressor drive is malfunctioning, the most likely culprit is excessively high temperatures. A high temperature at the discharge line can also result in 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 should 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 can appear. You may also find the P6 code if the compressor is experiencing 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 can mean. But because many of these codes stem from electrical problems, professional experience is usually needed.
Call Gordon Air Conditioning for Mini Split Repair
Gordon Air Conditioning 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 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 Crestview, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 850-250-0335 today.