Lennox mini split systems are an excellent way to provide compact, yet powerful 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 risk your mini split will malfunction. To identify what happened, you should locate where the mini split error codes are displayed. Understanding what these codes refer to can help you kickstart 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 consult your manual to find a guide for what each code means. You can also contact the HVAC pros at Tokay Heating and Air Conditioning. Our technicians are trained to learn these codes in order to deliver prompt mini split repair in Lodi. Give us a call at 209-257-3156 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, ask yourself the following:
- Is your system a mini split air conditioner or a mini split heat pump?
- Are there additional 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 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 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 stand for a problem with the system’s voltage. A repair technician from Tokay Heating and Air Conditioning may refer to it as overcurrent protection. Both excessively high or low voltage can produce this error code.
For mini split air conditioners, this code may also represent 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 may 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, housed within the outdoor unit. When the compressor drive is faulty, the most likely reason 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 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 may appear. You may also find the P6 code if the compressor is experiencing high or low pressure concerns.
Check 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 as many of these codes refer to electrical problems, professional experience is often needed.
Call Tokay Heating and Air Conditioning for Mini Split Repair
Tokay Heating and Air Conditioning can offer 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 diagnose 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 Lodi, bringing your new system online with little to no comfort disruption.
To schedule an appointment, give us a call at 209-257-3156 today.