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Durham Region Air Conditioning Repair, Service and Installation

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If you're looking for help fixing your comfortmaker air conditioner, look no further! Our comprehensive comfortmaker air conditioner repair guide will explain common issues, provide troubleshooting tips, and show you how to read your model's error codes.


CODE: Green "POWER".
RESULT: Module has power.
FIX: Supply voltage is present at module terminals.

CODE: Red "TRIP".
RESULT: Thermostat demand signal. Y1 is present, but the compressor is not running.
FIX: 1. Compressor protector is open. 2. Outdoor unit power disconnect is open. 3. Compressor circuit breaker or fuse(s) is open. 4. Broken wire or connector is not making contact. 5. Low pressure switch open if present in system. 6. Compressor contactor has failed open.

CODE: Yellow "ALERT" Flash Code 1.
RESULT: Long Run Time. Compressor is running extremely long run cycles.
FIX: 1. Low refrigerant charge. 2. Evaporator blower is not running. 3. Evaporator coil is frozen. 4. Faulty metering device. 5. Condenser coil is dirty. 6. Liquid line restriction (filter drier blocked if present in system). 7. Thermostat is malfunctioning.

CODE: Yellow "ALERT" Flash Code 2.
RESULT: System Pressure Trip. Discharge or suction pressure out of limits or compressor overloaded.
FIX: 1. High head pressure. 2. Condenser coil poor air circulation (dirty, blocked, damaged). 3. Condenser fan is not running. 4. Return air duct has substantial leakage. 5. If low pressure switch present in system, check Flash Code 1 information.

CODE: Yellow "ALERT" Flash Code 3.
RESULT: Short Cycling Compressor is running only briefly.
FIX: 1. Thermostat demand signal is intermittent. 2. Time delay relay or control board defective. 3. If high pressure switch present go to Flash Code 2 information. 4. If low pressure switch present go to Flash Code 1 information.

CODE: Yellow "ALERT" Flash Code 4.
RESULT: Locked Rotor.
FIX: 1. Run capacitor has failed. 2. Low line voltage (contact utility if voltage at disconnect is low). 3. Excessive liquid refrigerant in compressor. 4. Compressor bearings are seized.

CODE: Yellow "ALERT" Flash Code 5.
RESULT: Open Circuit.
FIX: 1. Outdoor unit power disconnect is open. 2. Compressor circuit breaker or fuse(s) is open. 3. Compressor contactor has failed open. 4. High pressure switch is open and requires manual reset. 5. Open circuit in compressor supply wiring or connections. 6. Unusually long compressor protector reset time due to extreme ambient temperature. 7. Compressor windings are damaged.

CODE: Yellow "ALERT" Flash Code 6.
RESULT: Open Start Circuit. Current only in run circuit.
FIX: 1. Run capacitor has failed. 2. Open circuit in compressor start wiring or connections. 3. Compressor start winding is damaged.

CODE: Yellow "ALERT" Flash Code 7.
RESULT: Open Run Circuit Current only in start circuit.
FIX: 1. Open circuit in compressor run wiring or connections. 2. Compressor run winding is damaged.

CODE: Yellow "ALERT" Flash Code 8.
RESULT: Welded Contactor Compressor always runs.
FIX: 1. Compressor contactor has failed closed. 2. Thermostat demand signal not connected to module.

CODE: Yellow "ALERT" Flash Code 9.
RESULT: Low Voltage Control circuit < 17VAC.
FIX: 1. Control circuit transformer is overloaded. 2. Low line voltage (contact utility if voltage at disconnect is low).


See What Our Customers Are Saying:

by Lousan, Ajax on Twintech Heating and Cooling

From quote, to installation, to follow up, Twintech provided excellent service. I would highly recommended their services.

by John, Pickering on Twintech Heating and Cooling

I had a really great experience with these guys. The salesman Bob was clearly very knowledgeable about everything to do with heating and cooling a home, spent a lot of time with us going over the details of the job, never rushed us and came back after the install to make sure we were happy. The installation crew was excellent, they covered the floors all the way from outside down to the basement furnace room, kept the place clean, got the work done on time and we’re very friendly. I’ve got 15 years in the contracting/ construction industry and these guys are one of the most professional company’s I’ve dealt with. Great company!

by Debra Robertson on Twintech Heating and Cooling

Had great service and clean-up was good. Was happy with my salesman. They were very friendly and helpful. I needed a new furnace as our was over 20 years old. The furnace and air-conditioner work great and they are very quiet. I am very pleased with the service and product I received.

by Private User on Twintech Heating and Cooling

Met with Dave for the sales process and he was great about explaining and going over everything to us. The install happened very quickly and the team were super professional and friendly. We are very happy with this company and their services and we definitely recommend them to others. Thankful my sister recommended them to me!

by Private User on Twintech Heating and Cooling

Reviews for Twintech were good, and they did not disappoint. After an initial visit to discuss the suitable AC unit for replacement, an installation date was available in just a couple of days, and everything was installed without a hitch. Highly recommended

by Private User on Twintech Heating and Cooling

Very pleased with the installation of our new furnace and A/C unit. From quotation stage to the completion of the job Twintech was very professional.
Thank you for a job well done.

by Darren, Pickering on Twintech Heating and Cooling

My old water heater quit on me. I called TwinTech. In less than 4 days, I had my new water heater installed and the old one taken away. The whole process was quick, easy, pleasant, and well done. This is the third time I've dealt with TwinTech and I've been satisfied each time.

by Private User on Twintech Heating and Cooling

I had them replace my furnace last year. When it came time for the air conditioner this year, I did not hesitate to call Twintech again. I will also have them perform regular maintenance on them.

by Robert, Ajax on Twintech Heating and Cooling

We required a new HVAC replacement after running the old
system for 18 years.
Dave understood our requirements and gave us a quote that
covered all the necessary items.
Installation was fast and very tidy. Everything works as
it should. Our thanks to Greg, Mitch and others for their
excellent work. Recommend this family owned business to
anyone else, considering HVAC or other work.

by John Armstrong, Pickering on Twintech Heating and Cooling

I needed a new furnace and A/C to replace my 21 yr. old units, and went to the internet to view potential companies in May, I received 3 quotes,
and chose Twintech based on their salesman Dave who was very detailed and covered off everything on what Twintech was all about,
an extremely dedicated company with so many years of experience, and after reading the on line reviews I was sold on Twintech, who did not disappoint as the installation team were top notch with Greg leading,
I would highly recommend this company without any doubts, in my books they are first class all the way. Our new Amana furnace and A/C are working perfectly !