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 12, 2019
On one of the coldest days of winter, our furnace stopped working. Our regular furnace company came and told us we had a CO2 leak and shut us off. Their quote for a new furnace was way too high and they couldn't even install it on the same day. TwinTech was recommended to us by a friend. We called and spoke to Dave who was very nice and knowledgeable. Grant showed up a short time later and a new furnace was installed the same day with no troubles at all. Best of all, we received a higher-end furnace than what was offered by our previous company and at a cheaper price. I would recommend TwinTech with no hesitation at all.
Apr 11, 2019
I installed a new furnace and Air conditioner with them. The installation is of high quality and according to standards. The guys are professional and reasonably priced.. I highly recommend them.
Apr 10, 2019
Had new furnace installed and ran into some difficulties but the contractor responded in a timely and efficient manner - after further service calls were made, a reasonable resolution was found.
Apr 8, 2019
The work was done quickly efficiently neatly and professionally. Pleased with the service, information, product, and the company.
Apr 1, 2019
Great sales member named Dave came in told us some amazing items and how they would be priced installed an all. We couldnt believe it! The next day the ac was installed, that day one employee named Greg told us that our furnace was working way to hard and was causing us to use way too much gas. So two days later they came in an installed a new furnace!
Apr 1, 2019
Installation was done quickly and professionally. The new furnace is quiet and provides even heat.
Mar 3, 2019
They removed and discarded old furnace. Installed new furnace. Installed air intake pipe, that had never been installed by builder, no charge. Replaced loose hose on floor with hard pipe and rerouted it to drain, no charge. Almost 33% cheaper then quote from Enercare, which was the company we dealt with and had insurance with for 8 years. No yearly fee for cleaning/insurance, saves 300 a year. Courteous, professional, fast, and friendly. My wife and I have been recommending them to everyone we know and meet, and will continue to do so. Thanks for everything, Twintech!!!
Mar 4, 2019
This company was great to deal with. Our furnace went down and they installed a new furnace the next day with a lot of professionalism!
Feb 22, 2019
Finally! An honest company with highly knowledgeable and informative staff. Had a furnace service and found multiply errors in our system from an amateur installer. Very fair price to correct problems and will definitely use again.
Feb 16, 2019
Had to replace the heating & a/c unit in a condo apartment dwelling. this company recommended by the property manager and president of the condo building. found their workmanship and attention to details very good and very thorough. were able to resolve small problems and situations and happy to feel the heat in my unit. it's pricey, but happy was done by a very professional service. thank you.
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!
Any reason why this could have happened?
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - September 21, 2023
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- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - July 12, 2023
Moved into home 1 month ago. AC unit is 2020. The day before moved in. I had my buddy who owns AC company rip the whole thing out and clean it all. Cleaned the coils, did something with copper took him hours! He's a fucking legend Ac
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- - August 11, 2023
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- SUBMITTED BY:
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