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 home comfort system is flawless. There’s always a possibility your mini split could malfunction. To identify what went wrong, you should locate where the mini split error codes are displayed. Recognizing what these codes mean can help ensure fast mini split repair, especially if professional help is needed.
What the error 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 call the HVAC pros at Goode Bros AC & Heating. Our technicians are trained to recognize these codes in order to provide prompt mini split repair in Katy. Give us a call at (833)-466-3322 to schedule 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 identify what your error code might mean, ask yourself the following:
- Is your model a mini split air conditioner or a mini split heat pump?
- Are there clear signs of what malfunctioned? A loud 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 disrupted. It might 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 adequately balance indoor temperatures.
E5 – Voltage Protection or Temperature Sensor Error
If you own a mini split heat pump, an E5 error may refer to a problem with the system’s voltage. A repair technician from Goode Bros AC & Heating may refer to it as overcurrent protection. Both very high or low voltage can result in this error code.
For mini split air conditioners, this code may also indicate 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 might also be a problem with one of the temperature sensors.
P4 – Compressor Drive Error / High Temperature
A P4 error code will most times be related to your mini splits compressor system, housed within the outdoor unit. When the compressor drive is not working, the most likely reason 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 faulty, a P6 error code is common.
When temperatures rise above 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 issues.
Check the Manual for Your Specific Model
Keep in mind 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 necessary.
Call Goode Bros AC & Heating for Mini Split Repair
Goode Bros AC & Heating 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 specific 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 Katy, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at (833)-466-3322 today.