Durham Region Air Conditioning Repair, Service and Installation
Goodman Manufacturing is an American company operating as an independent subsidiary of Daikin Group, the world's largest manufacturer of heating, ventilation and air conditioning products and systems. The company, founded in 1975 and based in Houston, Texas, manufactures residential heating and cooling systems.
CODE: A2.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
CODE: A3.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.
CODE: E5.
RESULT: Short in low voltage wiring.
RESULT: Short in low voltage wiring.
CODE: EE.
RESULT: Compressor relay contacts welded.
RESULT: Compressor relay contacts welded.
CODE: b0.
RESULT: Indoor blower motor problem./Communications errorbetween indoor and outdoor unit.
RESULT: Indoor blower motor problem./Communications errorbetween indoor and outdoor unit.
CODE: b9.
RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match.
RESULT: Indoor blower motor problem./Blocked filters./Restrictive/ undersized ductwork./Indoor-outdoor unit miss match.
CODE: d0.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module does not contain any shared data.
CODE: d1.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module contains invalid shared data or network data is invalid for the integrated control module.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and integrated control module contains invalid shared data or network data is invalid for the integrated control module.
CODE: d2.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and outdoor unit requires airflow greater than indoor unit's airflow capability./ Shared data is incompatible with the system or missing parameters.
RESULT: Air conditioner/heat pump is wired as part of a communicating system and outdoor unit requires airflow greater than indoor unit's airflow capability./ Shared data is incompatible with the system or missing parameters.
CODE: d3.
RESULT: Shared data sent to integrated control module does not match hardware configuration.
RESULT: Shared data sent to integrated control module does not match hardware configuration.
CODE: d4.
RESULT: Shared data on memory card has been rejected.
RESULT: Shared data on memory card has been rejected.
CODE: 01.
RESULT: Low refrigerant charge./Restriction in liquid line./Indoor blower motor failure.Indoor thermostat set extremely low.
RESULT: Low refrigerant charge./Restriction in liquid line./Indoor blower motor failure.Indoor thermostat set extremely low.
CODE: 02.
RESULT: Blocked condenser coil./Outdoor fan not running.
RESULT: Blocked condenser coil./Outdoor fan not running.
CODE: 03.
RESULT: Intermittent thermostat demand./Faulty compressor relay.
RESULT: Intermittent thermostat demand./Faulty compressor relay.
CODE: 04.
RESULT: Compressor bearings are seized./Failed compressor run capacitor./Faulty run capacitor wiring./Faulty compressor wiring./Low line voltage.
RESULT: Compressor bearings are seized./Failed compressor run capacitor./Faulty run capacitor wiring./Faulty compressor wiring./Low line voltage.
CODE: 05.
RESULT: Power is disconnected./Failed compressor protector./Compressor not properly wired to control.
RESULT: Power is disconnected./Failed compressor protector./Compressor not properly wired to control.
CODE: 06.
RESULT: Compressor start winding is open./Failed compressor run capacitor./Faulty run capacitor wiring./Compressor not properly wired to control./Faulty compressor wiring.
RESULT: Compressor start winding is open./Failed compressor run capacitor./Faulty run capacitor wiring./Compressor not properly wired to control./Faulty compressor wiring.
CODE: 07.
RESULT: Compressor run winding is open./Compressor no properly wired to control./Faulty compressor wiring.
RESULT: Compressor run winding is open./Compressor no properly wired to control./Faulty compressor wiring.
CODE: 08.
RESULT: Low line voltage./ High line voltage.
RESULT: Low line voltage./ High line voltage.
CODE: 09.
RESULT: Control detects secondary voltage less than 18 VAC./Transformer overloaded./Low line voltage.
RESULT: Control detects secondary voltage less than 18 VAC./Transformer overloaded./Low line voltage.
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!
Feb 18, 2025
Amazing experience with TwinTech Heating & Cooling! Their team was professional, knowledgeable, and efficient from start to finish. They installed my new furnace quickly and left everything spotless. The technicians took the time to explain everything and made sure I was comfortable with the system before they left. Great customer service and fair pricing. I highly recommend them for anyone needing HVAC services!
Feb 18, 2025
Great experience all around. Bob was sharp and easy to talk to, and Greg handled the installation perfectly. Would hire them again in a heartbeat.
Aug 17, 2024
I returned from vacation to find my AC unit on the Fritz. After calling way too many places I connected with TwinTech. Ive used the company in the past for my furnace so I was happy when I recognized Greg at my front door. Hes great and the service is always top notch. Id highly recommend using twintech for honest, superior service in the Durham region. Thanks!
Aug 13, 2024
I called Twin Tech when my air conditioning stopped working. Greg came over to diagnose the issue - the same day. He was able to diagnose the issue and resolve it quite quickly. Although it was a quick fix, Greg was very thorough in explaining the issue and provided great advice. Not to mention, I felt very comfortable having Greg in my home - which I consider very important when hiring a service provider. Twin Tech will be my go-to from now on. Thank you!!
Aug 12, 2024
Just hired TwinTech Heating & Cooling to do an A/C Unit removal & reinstall to allow for landscaping access on the side of my house, and they were wonderful!
Bob, Greg & Mitch make a great team! Quick appointment times, super knowledgeable, expert troubleshooting capabilities & very customer service oriented.
I would highly recommend them for all of your HVAC needs! Great job guys!!
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!
Taking Full Advantage of Your Furnace This Winter
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - November 11, 2024
Using your furnace effectively can keep you warm while saving energy and reducing costs. Here are some tips for maximizing your furnace’s efficiency: 1. Schedule a Tune-Up Regular maintenance ensures your furnace runs efficiently. A profe
Read MoreThe Importance of a Well-Conditioned Furnace
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - November 10, 2024
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Read MoreCan My Heat Pump Overheat?
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - January 23, 2024
Heat pumps, like any mechanical system, can potentially experience issues, including overheating. However, modern heat pumps, including those manufactured by Amana, are designed with safety features to prevent overheating and other potential problems
Read MoreWhat Parts of My AC Can Be Replaced?
- SUBMITTED BY:
- TWINTECH HEATING & COOLING
- - April 8, 2024
In an air conditioning system, various components can be replaced depending on the type of issue you're experiencing or the maintenance required. Here are some common parts that can be replaced in an AC system: Air Filters: These should
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