Durham Region Air Conditioning Repair, Service and Installation
If you're looking for help fixing your luxaire air conditioner, look no further! Our comprehensive luxaire air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.
CODE: E0.
RESULT: Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error.
RESULT: Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error.
CODE: E1.
RESULT: Indoor and outdoor unit communication malfunction.
RESULT: Indoor and outdoor unit communication malfunction.
CODE: E3.
RESULT: Indoor fan speed malfunction.
RESULT: Indoor fan speed malfunction.
CODE: E4.
RESULT: Indoor room temperature sensor error.
RESULT: Indoor room temperature sensor error.
CODE: E5.
RESULT: Evaporator coil temperature sensor error.
RESULT: Evaporator coil temperature sensor error.
CODE: EC.
RESULT: Refrigerant leak detection system malfunction.
RESULT: Refrigerant leak detection system malfunction.
CODE: EE.
RESULT: Water level alarm malfunction.
RESULT: Water level alarm malfunction.
CODE: E8.
RESULT: Dual indoor unit (twin model only) communication malfunction.
RESULT: Dual indoor unit (twin model only) communication malfunction.
CODE: E9.
RESULT: Other twin model malfunction.
RESULT: Other twin model malfunction.
CODE: F0.
RESULT: Overload protection.
RESULT: Overload protection.
CODE: F1.
RESULT: Outdoor temperature sensor error.
RESULT: Outdoor temperature sensor error.
CODE: F2.
RESULT: Outdoor condenser pipe sensor error.
RESULT: Outdoor condenser pipe sensor error.
CODE: F3.
RESULT: Discharge air temperature sensor error.
RESULT: Discharge air temperature sensor error.
CODE: F4.
RESULT: Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error.
RESULT: Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error.
CODE: F5.
RESULT: Outdoor fan speed (DC fan motor only) malfunction.
RESULT: Outdoor fan speed (DC fan motor only) malfunction.
CODE: F6.
RESULT: T2b sensor error.
RESULT: T2b sensor error.
CODE: F7.
RESULT: Auto-lifting panel communication error.
RESULT: Auto-lifting panel communication error.
CODE: F8.
RESULT: Auto-lifting panel malfunction.
RESULT: Auto-lifting panel malfunction.
CODE: F9.
RESULT: Auto-lifting panel is open.
RESULT: Auto-lifting panel is open.
CODE: P0.
RESULT: Inverter module IPM protection.
RESULT: Inverter module IPM protection.
CODE: P1.
RESULT: High/Low voltage protection.
RESULT: High/Low voltage protection.
CODE: P2.
RESULT: Compressor top overheating protection.
RESULT: Compressor top overheating protection.
CODE: P3.
RESULT: Outdoor low temperature protection.
RESULT: Outdoor low temperature protection.
CODE: P4.
RESULT: Compressor drive error.
RESULT: Compressor drive error.
CODE: P5.
RESULT: Mode conflict.
RESULT: Mode conflict.
CODE: P6.
RESULT: Compressor low-pressure protection.
RESULT: Compressor low-pressure protection.
CODE: P7.
RESULT: Outdoor IGBT sensor error.
RESULT: Outdoor IGBT sensor error.
Luxaire Central Controller Fault Codes.
CODE: H3.
RESULT: Outdoor adding malfunction (valid for host unit).
RESULT: Outdoor adding malfunction (valid for host unit).
CODE: H2.
RESULT: Outdoor decreasing malfunction (valid for host unit).
RESULT: Outdoor decreasing malfunction (valid for host unit).
CODE: H1.
RESULT: Net communication malfunction.
RESULT: Net communication malfunction.
CODE: EF.
RESULT: Other malfunction.
RESULT: Other malfunction.
CODE: E4-T4.
RESULT: Temp. Sensor malfunction.
RESULT: Temp. Sensor malfunction.
CODE: E3-T3.
RESULT: Temp. Sensor malfunction.
RESULT: Temp. Sensor malfunction.
CODE: E2.
RESULT: Sensor malfunction.
RESULT: Sensor malfunction.
CODE: E1-E0.
RESULT: Communication malfunction Phase sequence or lack of phase.
RESULT: Communication malfunction Phase sequence or lack of phase.
CODE: PF.
RESULT: Other Protection.
RESULT: Other Protection.
CODE: PE.
RESULT: Oil Balance.
RESULT: Oil Balance.
CODE: PD.
RESULT: Oil Return.
RESULT: Oil Return.
CODE: PA.
RESULT: Defrost Protection.
RESULT: Defrost Protection.
CODE: P8.
RESULT: Compressor Current 3rd Protection.
RESULT: Compressor Current 3rd Protection.
CODE: P7.
RESULT: Compressor Current 2nd Protection.
RESULT: Compressor Current 2nd Protection.
CODE: P5.
RESULT: Condenser High Temp. Protection.
RESULT: Condenser High Temp. Protection.
CODE: P4.
RESULT: Discharge Pipe Temp. Protection.
RESULT: Discharge Pipe Temp. Protection.
CODE: P3.
RESULT: Compressor Current 1st Protection.
RESULT: Compressor Current 1st Protection.
CODE: P2.
RESULT: Discharge Low- pressure Protection.
RESULT: Discharge Low- pressure Protection.
CODE: P1-P0.
RESULT: Discharge High- pressure Protection Compressor High Temp. Protection.
RESULT: Discharge High- pressure Protection Compressor High Temp. Protection.
Malfunction Code of Outdoor unit.
CODE: E1.
RESULT: Phase sequence error.
RESULT: Phase sequence error.
CODE: E2.
RESULT: Communication malfunction between indoor/outdoor units.
RESULT: Communication malfunction between indoor/outdoor units.
CODE: E3.
RESULT: T3 temperature sensor malfunction.
RESULT: T3 temperature sensor malfunction.
CODE: E4.
RESULT: T4 temperature sensor malfunction.
RESULT: T4 temperature sensor malfunction.
CODE: E5.
RESULT: T5 temperature sensor malfunction.
RESULT: T5 temperature sensor malfunction.
CODE: E6.
RESULT: Water-level alarm malfunction.
RESULT: Water-level alarm malfunction.
Luxaire Central Air Conditioning Error Codes,
CODE: EF.
RESULT: Other malfunction PF Other Protection.
RESULT: Other malfunction PF Other Protection.
CODE: EE.
RESULT: Water level checking malfunction PE Reserve.
RESULT: Water level checking malfunction PE Reserve.
CODE: ED.
RESULT: Outdoor protection PD Reserve.
RESULT: Outdoor protection PD Reserve.
CODE: EC.
RESULT: Clear malfunction PC Reserve.
RESULT: Clear malfunction PC Reserve.
CODE: EB.
RESULT: Inverter Module Protection PB Reserve.
RESULT: Inverter Module Protection PB Reserve.
CODE: EA.
RESULT: Compressor Over-current (4 times) PA Reserve.
RESULT: Compressor Over-current (4 times) PA Reserve.
CODE: E9.
RESULT: Communication malfunction between PCB and Display board P9 Reserve.
RESULT: Communication malfunction between PCB and Display board P9 Reserve.
CODE: E8.
RESULT: Fan motor checking out of control P8 Compressor Over-current.
RESULT: Fan motor checking out of control P8 Compressor Over-current.
CODE: E7.
RESULT: EEPROM malfunction P7 Power Lack/Over Volt Protection.
RESULT: EEPROM malfunction P7 Power Lack/Over Volt Protection.
CODE: E6.
RESULT: Over-zero checking malfunction P6 Discharge Low-pressure Protection.
RESULT: Over-zero checking malfunction P6 Discharge Low-pressure Protection.
CODE: E5.
RESULT: T3 sensor malfunction P5 Discharge High-pressure Protection.
RESULT: T3 sensor malfunction P5 Discharge High-pressure Protection.
CODE: E4.
RESULT: T2B sensor malfunction P4 Discharge Pipe Temp. Protection.
RESULT: T2B sensor malfunction P4 Discharge Pipe Temp. Protection.
CODE: E3.
RESULT: T2A sensor malfunction P3 Compressor Temp. Protection.
RESULT: T2A sensor malfunction P3 Compressor Temp. Protection.
CODE: E2.
RESULT: T1 sensor malfunction P2 Condenser High Temp. Protection.
RESULT: T1 sensor malfunction P2 Condenser High Temp. Protection.
CODE: E1.
RESULT: Communication malfunction P1 Anti-cooling or Defrost Protection.
RESULT: Communication malfunction P1 Anti-cooling or Defrost Protection.
CODE: E0.
RESULT: Phase sequence or lack of phase P0 Evaporator Temp. Protection.
RESULT: Phase sequence or lack of phase P0 Evaporator Temp. Protection.
CODE: 03#.
RESULT: CCM/PC(gateway) Communication Malfunction.
RESULT: CCM/PC(gateway) Communication Malfunction.
CODE: 02#.
RESULT: CCM/Function Module Communication Malfunction.
RESULT: CCM/Function Module Communication Malfunction.
CODE: 01#.
RESULT: CCM/NIM Communication Malfunction.
RESULT: CCM/NIM Communication Malfunction.
CODE: 00#.
RESULT: CCM/PCB Communication Malfunction.
RESULT: CCM/PCB Communication Malfunction.
Luxaire Wall Mounted Type Ac Error Codes.
CODE: E7.
RESULT: Communication fault between indoor and outdoor units.
RESULT: Communication fault between indoor and outdoor units.
CODE: E1.
RESULT: Room temperature sensor failure.
RESULT: Room temperature sensor failure.
CODE: E4.
RESULT: Indoor EEPROM error.
RESULT: Indoor EEPROM error.
CODE: E14.
RESULT: Indoor fan motor malfunction.
RESULT: Indoor fan motor malfunction.
CODE: F12.
RESULT: Outdoor EEPROM error.
RESULT: Outdoor EEPROM error.
CODE: F1.
RESULT: The protection of IPM.
RESULT: The protection of IPM.
CODE: F22.
RESULT: Overcurrent protection of AC electricity for the outdoor model.
RESULT: Overcurrent protection of AC electricity for the outdoor model.
CODE: F3.
RESULT: Communication fault between the IPM and outdoor PCB.
RESULT: Communication fault between the IPM and outdoor PCB.
CODE: F19.
RESULT: Power voltage is too high or low.
RESULT: Power voltage is too high or low.
CODE: F4.
RESULT: Overheat protection for Discharge temperature.
RESULT: Overheat protection for Discharge temperature.
CODE: F8.
RESULT: Outdoor DC fan motor fault.
RESULT: Outdoor DC fan motor fault.
CODE: F21.
RESULT: Defrost temperature sensor failure.
RESULT: Defrost temperature sensor failure.
CODE: F7.
RESULT: Suction temperature sensor failure.
RESULT: Suction temperature sensor failure.
CODE: F6.
RESULT: Ambient temperature sensor failure.
RESULT: Ambient temperature sensor failure.
CODE: F25.
RESULT: Discharge temperature sensor failure.
RESULT: Discharge temperature sensor failure.
CODE: F11.
RESULT: deviate from the normal for the compressor.
RESULT: deviate from the normal for the compressor.
CODE: F28.
RESULT: Loop of the station detect error.
RESULT: Loop of the station detect error.
CODE: F2.
RESULT: Overcurrent of the compressor.
RESULT: Overcurrent of the compressor.
CODE: F23.
RESULT: Overcurrent protection for single-phase of the compressor.
RESULT: Overcurrent protection for single-phase of the compressor.
See What Our Customers Are Saying:
Apr 28, 2022
I left a live chat message on their website that my air conditioning was not working. Within 1hr a representative called me to discuss my options.
The next day he came to the house to review my needs and give me a price for a new system. Price quoted was less than I expected and the installation was completed the following day. I found their salesman and the installers very knowledgeable and easy to deal with. All my questions were answered. Everything was properly explained in regards to what unit was needed and why, along with instruction where needed for use.
The installers made sure everything was working properly before they left.
Apr 28, 2022
This is to thank Twintech Heating and Cooling for their exceptional and timely service. Mitch, their technician was very courteous and generous with his time right from his first meeting with us. He not only took the time to check everything but also educated us on why we needed what he recommended. Greg and Mitch graciously accommodated us on our requested day and time for job to be done. They were both very courteous and responsive to our needs and special requests especially in a tight spot. The job was finished neatly and on time. Thank you Twintech for your great service !
Apr 28, 2022
They came the day and time they had planned for us and were very fast and efficient! The AC works amazing and it is amazing during the heat of the summer we have already got! Thanks for everything you did for us!
Apr 28, 2022
Would recommend this company to friends and family in a heartbeat. Very professional , on time and left no mess when the job was done.
Apr 28, 2022
Great customer service. Responsive and professional. I would highly recommend Twintech, I used them previously for repair service and a new air conditioner- very satisfied.
Apr 5, 2022
Our air conditioner failed. Made a call and within 15 min a technician was at our door.
The issue was fixed and many suggestions were provided.
Thanks to Mitch. Great service !
Apr 5, 2022
Our furnace was rattling, as soon as we put our air conditioner on this past week. We had researched looking for a company that was Registered with Better Business Bureau, and this company TwinTech, had A+ Rating. Scott, was immediately helpful via text/phone and sent his technician as soon as he was able...Mitchell/technician provided great professional service. Thank you TwinTech.
Sean and Debbie
Apr 5, 2022
I contacted various companies when looking to install a new furnace and I found Twintech to be transparent with their communication and approach. They had options to suit my various requirements and the price vs quality was very good. The after installation communication was also very good and they answered all queries I had.
Apr 5, 2022
My furnace broke down last month. The team was quick to respond, courteous, professional and mindful of COVID-19 concerns. I highly recommend them if you are considering replacing or servicing your HVAC equipment.
Apr 5, 2022
I was very happy with the installation and price. I would definitely recommend. Thank you Twintech.
See What Our Customers Are Saying:
Aug 8, 2025
We are very happy to recommend this company to everyone. Our furnace broke down on Sunday morning. We phoned them and before noon Grant the owner showed up. He worked on the furnace for about a hour not wanting to give up to fix the problem. The furnace was 17 years old. I was the one talking about replacing it. End result was the next day it was all done. On the Sunday Bob came over with heaters to warm up the house. We decided to replace the water heater at the same time. Thanks Grant for the excellent work. Thumbs up.
Aug 8, 2025
Right on time. Explained how to work the HRV in a different way so the house would not be so dry. Changed my whole house water filter for me as well. Friendly, helpful, caring service!
Feb 18, 2025
Very pleased with the professional service that TwinTech Heating and Cooling provided in replacing my furnace. I got several quotes from different service providers. Their price was excellent and they explained the features very well. We are very glad we went with TwinTech and highly recommend their services.
Feb 18, 2025
We were new homeowners in need of a second opinion. TwinTech Heating & Cooling were Amazing and professional. Very knowledgeable and great service all around. Recommend to anyone looking for honest and reliable services. Treated with respect and care. Thank you Greg, Mitch and Bob!
Feb 18, 2025
TwinTech is an excellent and honest company! I called them for a second opinion after being told by another company that I needed to replace my furnace. Turns out this was not the case at all! I did not need a new furnace. TwinTech did not push to make an unnecessary sale and saved me from a huge expense. Bob and Mitch were extremely professional and above all honest! I definitely recommend TwinTech!
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