Lennox mini-split systems are an excellent way to provide compact, yet effective 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 ductless mini-split is flawless. There’s always a chance your mini-split will malfunction. To determine what is malfunctioning, you should locate where the mini-split error codes are displayed. Knowing what these codes refer to can help you kick-start 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 check your manual for a guide for what each code means. You can also trust the HVAC pros at Rapids Sheet Metal Works Inc. Our technicians are trained to recognize these codes in order to ensure prompt mini-split repair in Wisconsin Rapids. Give us a call at 715-301-0256 to schedule an appointment.
Common Error Codes for Lennox Mini Splits
While error codes may differ from model to model, there are some codes you’ll be more likely to encounter. To identify what your error code could mean, ask yourself the following:
Is your system a mini-split air conditioner or a mini-split heat pump?
Are there clear 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 might be facing intermittent connection issues 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 could indicate a problem with the system’s voltage. A repair technician from Rapids Sheet Metal Works Inc may refer to it as overcurrent protection. Both excessively high or low voltage can result in this error code.
For mini-split air conditioners, this code could 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, like an E1 code. It might also be an issue 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 malfunctioning, the most likely reason 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 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 exceed safe levels, a safety switch will 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 facing high or low pressure concerns.
Review Your Manual for Specifics
Don’t forget 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 should mean. But because many of these codes stem from electrical problems, professional experience is usually needed.
Trust Rapids Sheet Metal Works Inc for Mini-Split Repair
Rapids Sheet Metal Works Inc 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 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 Wisconsin Rapids, bringing your new system online with minimal comfort disruption.
To schedule an appointment, give us a call at 715-301-0256 today.