$49 / month O.A.C Including Install
$49 / month O.A.C Including Install

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Durham Region Air Conditioning Repair, Service and Installation

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Error Codes. By checking the error code, you are able to identify the status and the issue of the air conditioner/air conditioning system.


CODE: E0.
RESULT: Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error.

CODE: E1.
RESULT: Indoor and outdoor unit communication malfunction.

CODE: E3.
RESULT: Indoor fan speed malfunction.

CODE: E4.
RESULT: Indoor room temperature sensor error.

CODE: E5.
RESULT: Evaporator coil temperature sensor error.

CODE: EC.
RESULT: Refrigerant leak detection system malfunction.

CODE: EE.
RESULT: Water level alarm malfunction.

CODE: E8.
RESULT: Dual indoor unit (twin model only) communication malfunction.

CODE: E9.
RESULT: Other twin model malfunction.

CODE: F0.
RESULT: Overload protection.

CODE: F1.
RESULT: Outdoor temperature sensor error.

CODE: F2.
RESULT: Outdoor condenser pipe sensor error.

CODE: F3.
RESULT: Discharge air temperature sensor error.

CODE: F4.
RESULT: Outdoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error.

CODE: F5.
RESULT: Outdoor fan speed (DC fan motor only) malfunction.

CODE: F6.
RESULT: T2b sensor error.

CODE: F7.
RESULT: Auto-lifting panel communication error.

CODE: F8.
RESULT: Auto-lifting panel malfunction.

CODE: F9.
RESULT: Auto-lifting panel is open.

CODE: P0.
RESULT: Inverter module IPM protection.

CODE: P1.
RESULT: High/Low voltage protection.

CODE: P2.
RESULT: Compressor top overheating protection.

CODE: P3.
RESULT: Outdoor low temperature protection.

CODE: P4.
RESULT: Compressor drive error.

CODE: P5.
RESULT: Mode conflict.

CODE: P6.
RESULT: Compressor low-pressure protection.

CODE: P7.
RESULT: Outdoor IGBT sensor error.

York Central Controller Fault Codes.

CODE: H3.
RESULT: Outdoor adding malfunction (valid for host unit).

CODE: H2.
RESULT: Outdoor decreasing malfunction (valid for host unit).

CODE: H1.
RESULT: Net communication malfunction.

CODE: EF.
RESULT: Other malfunction.

CODE: E4-T4.
RESULT: Temp. Sensor malfunction.

CODE: E3-T3.
RESULT: Temp. Sensor malfunction.

CODE: E2.
RESULT: Sensor malfunction.

CODE: E1-E0.
RESULT: Communication malfunction Phase sequence or lack of phase.

CODE: PF.
RESULT: Other Protection.

CODE: PE.
RESULT: Oil Balance.

CODE: PD.
RESULT: Oil Return.

CODE: PA.
RESULT: Defrost Protection.

CODE: P8.
RESULT: Compressor Current 3rd Protection.

CODE: P7.
RESULT: Compressor Current 2nd Protection.

CODE: P5.
RESULT: Condenser High Temp. Protection.

CODE: P4.
RESULT: Discharge Pipe Temp. Protection.

CODE: P3.
RESULT: Compressor Current 1st Protection.

CODE: P2.
RESULT: Discharge Low- pressure Protection.

CODE: P1-P0.
RESULT: Discharge High- pressure Protection Compressor High Temp. Protection.

Malfunction Code of Outdoor unit.

CODE: E1.
RESULT: Phase sequence error.

CODE: E2.
RESULT: Communication malfunction between indoor/outdoor units.

CODE: E3.
RESULT: T3 temperature sensor malfunction.

CODE: E4.
RESULT: T4 temperature sensor malfunction.

CODE: E5.
RESULT: T5 temperature sensor malfunction.

CODE: E6.
RESULT: Water-level alarm malfunction.

York Central Air Conditioning Error Codes,

CODE: EF.
RESULT: Other malfunction PF Other Protection.

CODE: EE.
RESULT: Water level checking malfunction PE Reserve.

CODE: ED.
RESULT: Outdoor protection PD Reserve.

CODE: EC.
RESULT: Clear malfunction PC Reserve.

CODE: EB.
RESULT: Inverter Module Protection PB Reserve.

CODE: EA.
RESULT: Compressor Over-current (4 times) PA Reserve.

CODE: E9.
RESULT: Communication malfunction between PCB and Display board P9 Reserve.

CODE: E8.
RESULT: Fan motor checking out of control P8 Compressor Over-current.

CODE: E7.
RESULT: EEPROM malfunction P7 Power Lack/Over Volt Protection.

CODE: E6.
RESULT: Over-zero checking malfunction P6 Discharge Low-pressure Protection.

CODE: E5.
RESULT: T3 sensor malfunction P5 Discharge High-pressure Protection.

CODE: E4.
RESULT: T2B sensor malfunction P4 Discharge Pipe Temp. Protection.

CODE: E3.
RESULT: T2A sensor malfunction P3 Compressor Temp. Protection.

CODE: E2.
RESULT: T1 sensor malfunction P2 Condenser High Temp. Protection.

CODE: E1.
RESULT: Communication malfunction P1 Anti-cooling or Defrost Protection.

CODE: E0.
RESULT: Phase sequence or lack of phase P0 Evaporator Temp. Protection.

CODE: 03#.
RESULT: CCM/PC(gateway) Communication Malfunction.

CODE: 02#.
RESULT: CCM/Function Module Communication Malfunction.

CODE: 01#.
RESULT: CCM/NIM Communication Malfunction.

CODE: 00#.
RESULT: CCM/PCB Communication Malfunction.

York Wall Mounted Type Ac Error Codes.

CODE: E7.
RESULT: Communication fault between indoor and outdoor units.

CODE: E1.
RESULT: Room temperature sensor failure.

CODE: E4.
RESULT: Indoor EEPROM error.

CODE: E14.
RESULT: Indoor fan motor malfunction.

CODE: F12.
RESULT: Outdoor EEPROM error.

CODE: F1.
RESULT: The protection of IPM.

CODE: F22.
RESULT: Overcurrent protection of AC electricity for the outdoor model.

CODE: F3.
RESULT: Communication fault between the IPM and outdoor PCB.

CODE: F19.
RESULT: Power voltage is too high or low.

CODE: F4.
RESULT: Overheat protection for Discharge temperature.

CODE: F8.
RESULT: Outdoor DC fan motor fault.

CODE: F21.
RESULT: Defrost temperature sensor failure.

CODE: F7.
RESULT: Suction temperature sensor failure.

CODE: F6.
RESULT: Ambient temperature sensor failure.

CODE: F25.
RESULT: Discharge temperature sensor failure.

CODE: F11.
RESULT: deviate from the normal for the compressor.

CODE: F28.
RESULT: Loop of the station detect error.

CODE: F2.
RESULT: Overcurrent of the compressor.

CODE: F23.
RESULT: Overcurrent protection for single-phase of the compressor.


See What Our Customers Are Saying:

by Eric Y, Greenbank on Twintech Heating and Cooling

Dave was great in helping me get the proper units for my property, as well as getting them installed. The installers arrived when they said they would, and completed the project on time, and professionally. If I needed another furnace, I would use Dave again.

by Ed B., Whitby on Twintech Heating and Cooling

I have known Greg and Grant Dainty for many years and have used their company for my house and business. I recommended them also for my parents and sister and they all have been very satisfied with the quality of work for a reasonable price. I just recently had them install a new HVAC system in an older house and was very pleased with their work. Craig in Pickering. After meeting with various heating and air conditioning contractors I was referred to Twin Tech Heating and Cooling through a family member. Greg and Grant arrived at my home and provided me with an estimate and a plan as to how they were going to remove and replace my furnace and air conditioner. On the day of install Greg and Grant arrived at my home on time and were very professional and extremely courteous as to any questions or concerns that I had. The removal and install was truly professional and the attention to detail was exactly what I was looking for. I’ve seen many installs from other contractors and I couldn’t be any happier to have had such a clean looking install. The sheet metal work, ducting and venting all look fantastic. Upon completion Greg and Grant left me feeling extremely happy and very fortunate of a job well done. Thanks again Twin Tech!!

by Floreene in Whitby on Twintech Heating and Cooling

My old furnace had finally broken down for the last time when contacted twintech to have a new furnace installed…They were prompt, knowledgeable and very reasonably priced. They did such a great job i tell all my friends and family about this company.

by Damien McIsaac. Ajax on Twintech Heating and Cooling

To whom it may concern, I recently had TwinTech (Greg and Grant Dainty) replace my furnace and service both my gas fireplaces and air conditioning unit. They were professional, courteous and very fair in their pricing. I would gladly recommend TwinTech to anyone needing work done. I can be contacted at 905-626-XXXX.

by Blair N. - Toronto on Twintech Heating and Cooling

My Fiancé and I have relied on Twintech Heating and Cooling now for the better part of the last 10 years. In that time, Greg has installed a furnace, an air conditioner, and a heat-pump at our residence in Toronto. In each instance Greg and his team were a pleasure to deal with. They were courteous and professional throughout the whole process and the quality of their work is first rate. Our experiences have always been extremely positive and we have referred his services numerous times to our friends and family. Without hesitation, I would recommend Greg and TwinTech Heating and Cooling to anyone looking to service or replace their existing heat/AC equipment

See What Our Customers Are Saying:

by Aaron on Twintech Heating and Cooling

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.

by Linda on Twintech Heating and Cooling

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!

by Robert Rogers on Twintech Heating and Cooling

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.

by Robert Mizuno on Twintech Heating and Cooling

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!

by Ruth on Twintech Heating and Cooling

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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