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Durham Region Air Conditioning Repair, Service and Installation

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


PROBLEM: Unit will not operate,
RESULT: Power disconnected or loose connection.
FIX: Check power supply to unit. Check voltage at contactor.

PROBLEM: Unit will not operate,
RESULT: Blown fuse / breaker tripped.
FIX: Replace fuses/reset breaker.

PROBLEM: Unit will not operate,
RESULT: Thermostat out of calibration is set too high.
FIX: Reset.

PROBLEM: Unit will not operate,
RESULT: Contactor defective.
FIX: Check for 24VAC at contactor coil - replace if open.

PROBLEM: Unit will not operate,
RESULT: Transformer defective.
FIX: Check wiring - replace transformer.

PROBLEM: Unit will not operate,
RESULT: High pressure control open (if provided).
FIX: Reset - see high pressure connection.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Run or start capacitor defective.
FIX: Replace.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Start relay defective.
FIX: Replace.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Loose wire.
FIX: Check for correct voltage at compressor - check and tighten all connections.

PROBLEM: Outdoor fan on; Compressor off.
RESULT: Compressor stuck, grounded or open motor winding, open internal overload.
FIX: Wait at least 2 hours for overload to reset; if still open, replace the compressor.

PROBLEM: Too little cooling.
RESULT: Low voltage condition.
FIX: Add start kit components.

PROBLEM: Too little cooling.
RESULT: Improperly sized unit.
FIX: Recalculate load.

PROBLEM: Too little cooling.
RESULT: Improper indoor airflow.
FIX: Check-should be approximately 400 CFM per ton.

PROBLEM: Too little cooling.
RESULT: Incorrect refrigerant charge.
FIX: Charge per procedure in installation manual.

PROBLEM: Too little cooling.
RESULT: Air, non-condensables or moisture in system.
FIX: Recover refrigerant.

PROBLEM: Compressor operates in short cycles.
RESULT: Incorrect voltage.
FIX: At compressor terminals, voltage must be +/10% of nameplate marking when unit is operating.

PROBLEM: Compressor operates in short cycles.
RESULT: Defective overload protector.
FIX: Replace - check for correct voltage.

PROBLEM: Compressor operates in short cycles.
RESULT: Refrigerant undercharge.
FIX: Add refrigerant.

PROBLEM: High head pressure; Low suction pressure.
RESULT: Restriction in liquid line, expansion device or filter drier.
FIX: Remove or replace defective component.

PROBLEM: High head pressure; Low suction pressure.
RESULT: Lack of sufficient indoor airflow.
FIX: Clean/check filters, registers, or evaporator coil that may cause a restriction.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Dirty outdoor coil.
FIX: Clean coil.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Refrigerant overcharge.
FIX: Correct system charge.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Outdoor fan not running.
FIX: Repair or replace.

PROBLEM: High head pressure; Normal suction pressure.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.

PROBLEM: Low head pressure; High suction pressure.
RESULT: Expansion device stuck in open position.
FIX: Replace expansion device.

PROBLEM: Low head pressure; High suction pressure.
RESULT: Defective compressor valves.
FIX: Replace compressor.

PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.

PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Operating below 65F (18C) outdoors.
FIX: Add low ambient kit.

PROBLEM: Low suction pressure; Compressor cool. Ice on indoor coil.
RESULT: Moisture in system.
FIX: Recover refrigerant - evacuate and recharge - replace filter drier.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Excessive load.
FIX: Recheck load calculation.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Defective compressor.
FIX: Replace.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: TXV hunting.
FIX: Check TXV bulb clamp - check air distribution on coil - replace TXV.

PROBLEM: High suction pressure; or fluctuating head and suction pressures.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.

PROBLEM: Pulsing noise at expansion device or liquid line.
RESULT: Air or non-condensables in system.
FIX: Recover refrigerant, evacuate and recharge.

PROBLEM: Registers sweat.
RESULT: Low indoor airflow.
FIX: Increase speed of blower or reduce restriction - replace air filter.


See What Our Customers Are Saying:

by Ian, Toronto on Twintech Heating and Cooling

The term excellent or incredible does not seem high enough praise for the Twintech Heating and cooling company that recently replaced our 15 year old furnace. To start with, the response from Dave at Twintech to our original pricing request was the quickest and most professional of the 5 prices we received which included two of the primary natural gas providers. The Twintech pricing was the most competitive by a considerable margin.
We had Dave visit our home to confirm all pricing which he did and scheduled us for next day installation which was not offered my the majority of the other providers.
The installation; the team arrived on time and provided coverings to all of the hardwood flooring and stairs and proceeded with the removal and reinstallation of the new furnace, the workers predicated six hours and were completed in five hours. I have to mention how courteous and polite the workers were each time we interacted with them from start to finish.
The final result was amazing, all materials were cleaned up and removed from the house and the workmanship very impressive.
One feature that really stood out for me which shows a high level of professionalism was that we had various condensation hoses from the furnace , humidifier and an air filtration unit meeting at the one drain, the installation crew ran PVC tubing including elbows along two sides of the furnace to guide the hoses into one PVC tube at the drain, it looks great!
When the install was completed and tested the Twintech technician guided us through the features and recommendation's for care of the new furnace.
We highly recommend Twintech to anyone for the outstanding service provided to us.

by Stephen, Pickering on Twintech Heating and Cooling

I didn't hesitate to call Twintech in for a 2nd time as they did an outstanding job installing my new furnace last year. This time my 18 year old air conditioner was on its last legs. Greg and the team are top notch, highly skilled technicians. The job was executed in a timely and professional manner. Greg was extremely thorough and went the extra mile to make sure everything was operating efficiently. Lastly, Dave is a true gentleman and really made the customer experience pleasurable and worry free. Always remember that good work ain't cheap and cheap work ain't good.

by Derek, Whitby on Twintech Heating and Cooling

It's so hard to find solid companies these days, but I was very pleased to find one in Twintech. Greg and his crew were very clean, respectful and professional. We were most impressed at how all the things they said they would do, were done. Sounds strange, but usually when a contractor comes to your home they say they will take care of this and that, make sure this is done, etc but when the work starts you have to constantly remind them of your previous discussions. Greg ensured every item he said he would do was done, no reminders required. The work was done right, at a fair price and on time. We will be sure to call them when our A/C unit dies (fingers crossed that's not going to happen too soon :) )

by Patrick, Toronto on Twintech Heating and Cooling

Replaced our aging hot water tank with a tankless system. Excellent work, fast efficient and clean.

Walked us through the new system and recommended maintenance schedule.

This is our second time working with TwinTech and we are very happy with the quality of their work and professionalism.

by Troy, Toronto on Twintech Heating and Cooling

Efficient work and great follow up by the team at Twin Tech. Great product and communication.

by Peter, Pickering on Twintech Heating and Cooling

On coldest night of the year our furnace quit. At 8:40 in the morning Greg arrived and gave us a diagnosis and a recommendation. By 2:30 we had a new furnace and were warm again. Great company. Great customer service. Good reasonable price.

Peter, Pickering

by New Furnace Installed on Twintech Heating and Cooling

Twin tech team was very efficient and prompt. They provided a quote within hours of request and got the job done on time. No disruption to home function. We would highly recommend this team. Job well done.

by John from Toronto on Twintech Heating and Cooling

Our furnace bit the dust, and Twintech came out to troubleshoot and diagnose the problem within a couple of hours. Mitch was super helpful, patient, and answered all of our questions. When we decided to get the furnace replaced, the crew was over first thing the next morning and did a fantastic job. Not only did they complete the job in a few hours, but they cleaned up and respected our house as they went, and answered all of our follow-up questions. I've used Twintech for our HVAC needs in the past and will continue to do so. I'd recommend them to anyone, and it feels good to support a local, family-owned business.

by Ryan k on Twintech Heating and Cooling

Dave and the Twintech team were fabulous from day 1 and helped us through the process to identifying a new furnace and AC unit. This was our first time through this process and Dave did a thorough job explaining all the components and was very patience answering all our questions. Dave provided great insights and fair pricing.

The Twintech team did an awesome installation. Very clean and efficient. I would highly recommended their service.

by Louise in Scarborough on Twintech Heating and Cooling

We had a new Amana furnace installed by Twintech and we were very pleased with the installation. It is nice to have a warm house again.