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 deliver both heating and cooling.
But no ductless mini-split is flawless. There’s always a chance your mini-split could malfunction. To identify 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 depend 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 call the HVAC pros at Wallpe Heating & Cooling. Our technicians are trained to recognize these codes in order to ensure prompt mini-split repair in Greensburg. Give us a call at 812-663-7252 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 see. To determine what your error code could mean, consider 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 indicates that communication between the mini-split system’s indoor and outdoor units has been impeded. It may be struggling with intermittent connection issues 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 could indicate a problem with the system’s voltage. A repair technician from Wallpe Heating & Cooling 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 indicate 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, like 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 generally be related to your mini-splits compressor system, found 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 could 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 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.
Consult the Manual for Your Specific Model
Remember 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 start with electrical problems, professional experience is often necessary.
Call Wallpe Heating & Cooling for Mini-Split Repair
Wallpe Heating & Cooling 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 diagnose 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 Greensburg, bringing your new system online with little to no comfort disruption.
To schedule an appointment, give us a call at 812-663-7252 today.