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Durham Region Air Conditioning Repair, Service and Installation

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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.

CODE: A3.
RESULT: Shorted sensor./Open sensor./Sensor disconnected./Sensor out of range.

CODE: E5.
RESULT: Short in low voltage wiring.

CODE: EE.
RESULT: Compressor relay contacts welded.

CODE: b0.
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.

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.

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.

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.

CODE: d3.
RESULT: Shared data sent to integrated control module does not match hardware configuration.

CODE: d4.
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.

CODE: 02.
RESULT: Blocked condenser coil./Outdoor fan not running.

CODE: 03.
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.

CODE: 05.
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.

CODE: 07.
RESULT: Compressor run winding is open./Compressor no properly wired to control./Faulty compressor wiring.

CODE: 08.
RESULT: Low line voltage./ High line voltage.

CODE: 09.
RESULT: Control detects secondary voltage less than 18 VAC./Transformer overloaded./Low line voltage.


See What Our Customers Are Saying:

by Brent L on Twintech Heating and Cooling

Work was done on schedule, professionally, according to quote and with minimal inconvenience to building users. Very happy with the end result. The only area for improvement from my experience - need more timely quoting process.

by Karen on Twintech Heating and Cooling

The team was great! Very knowledgeable, professional and extremely helpful. A few days after install the unit didn’t seem to be working, user error, but within minutes of contacting them..on a Saturday.. a tech was on the phone troubleshooting with us. I highly recommend Twintech for your cooling or heating needs. They stand by their products and a pleasure to deal with.

by Rob on Twintech Heating and Cooling

During the hottest week in the summer our old A/C decided to call it quits. I called Twintech Heating & Cooling after receiving a referral from a family member; came highly rated for being an honest, family-run business, who appreciates their customers. Dave was able to accommodate my hectic schedule and book a late evening appointment to walk through the specifics. Greg and Mitch arrived exactly on time a few days later, were very polite and friendly, and within a couple of hours had a new unit up and running. I also received a follow-up call to ensure we were happy with the Amana.

by Linda Robinson on Twintech Heating and Cooling

They were on time and very professional. I'm so glad I decided to go with Twintech, thanks!

by Famcam1953 on Twintech Heating and Cooling

Timely and appreciated - this was during the hottest days this year when our Air and Furnace way.
Efficient. Professional. No BS or overselling. What was promised, was delivered at a cost-effective price point.
Down to earth.

by DG Sellers on Twintech Heating and Cooling

Professionally done and took care to cover all entry floors to the house for the installers to remove the old furnace and install a new furnace.
I also made recommendations of the tankless water heater that we had installed and items to address. We did not know they also installed tankless water heaters.

by Bill, Pickering on Twintech Heating and Cooling

Price was not the cheapest nor the most expensive of my quotes. It's the quality of the installation that makes for a good AC system. The twins' knowledge & professionalism was evident in the small details:
Very clean work. Greg made sure that the refrigerant level & temperature were correct. They reinstall the insulation & vapor barrier around the wall. The outside electrical cords were secured to the wall. Proud to support this local company. Thank you.

by Taz on Twintech Heating and Cooling

Great team of guys came to do the work. Very professional. Arrived on time worked very efficiently and were very clean. They answered any questions we had without hesitation. The air conditioner works great and is so quiet. I highly recommend them and they don't try to up-sell anything right from the start.

by Jordan on Twintech Heating and Cooling

The service was prompt, professional and very courteous. Competitive price. Would highly recommend this company.

by David on Twintech Heating and Cooling

Excellent workmanship, and quick response. Would recommend Twintech to anyone.