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bryant air conditioner error codes

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bryant air conditioner error codes
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bryant air conditioner codes

The codes are flashed by a series of short and long flashes of the status light. The short flashes indicate the first digit in the status code, followed by long flashes indicating the second digit of the error code.


CODE: On solid, no flash.
RESULT: None.
FIX: Normal operation.

CODE: Rapid continuous flashing.
RESULT: Standard Thermostat Control 288ANA/180ANA only.
FIX: Unit being controlled by standard thermostat inputs instead of Evolution Control. Only high stage operation is aveliable. This operating mode should be used in emergency situations only.

CODE: 1 pause.
RESULT: None.
FIX: Normal operation.

CODE: 2 pause.
RESULT: None.
FIX: Normal operation.

CODE: 16.
RESULT: System Communications Failure.
FIX: Communication with User Interface lost. Check wiring to UI, indoor and outdoor units.

CODE: 25.
RESULT: Invalid Model Plug.
FIX: Control does not detect a model plug or detects an invalid model plug. Unit will not operate without correct model plug.

CODE: 31.
RESULT: High Pressure Switch Open.
FIX: High - pressure switch trip. Check refrigerant charge, outdoor fan operating and coils for airflow restrictions.

CODE: 32.
RESULT: Low Pressure Switch Open.
FIX: Low - pressure switch trip. Check refrigerant charge and indoor air flow.

CODE: 45.
RESULT: Control Fault.
FIX: Outdoor unit control board has failed. Control board needs to be replaced.

CODE: 46.
RESULT: Brown Out (230v).
FIX: Line voltage < 187v for at least 4 seconds.

CODE: 47.
RESULT: No 230v at Unit Measured at L1 and L2 on circuit board.
FIX: There is no 230v at the contactor when indoor unit is powered and cooling/heating demand exists.

CODE: 53.
RESULT: Outdoor Air Temp Sensor Fault.
FIX: Outdoor air sensor not reading or out of range.

CODE: 55.
RESULT: Outdoor Coil Sensor Fault.
FIX: Coil sensor not reading or out of range. Ohm out sensor and check wiring.

CODE: 56.
RESULT: Thermistors out of range.
FIX: Improper relationship between coil sensor and outdoor air sensor. Ohm out sensor and check wiring.

CODE: 71.
RESULT: Low Stage Thermal Cut out.
FIX: Compressor operation detected then disappears while low stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long.

CODE: 72.
RESULT: High Stage Thermal Cut out.
FIX: Compressor operation detected then disappears while low stage demand exists. Possible causes are internal compressor overload trip or start relay and capacitor held in circuit too long.

CODE: 73.
RESULT: Contactor Shorted.
FIX: Compressor voltage sensed when no demand for compressor operation exists. Contactor may be stuck closed or there is a wiring error.

CODE: 74.
RESULT: No 230v at Compressor.
FIX: Compressor voltage not sensed when compressor should be starting. Contactor may be stuck open or there is a wiring error.

CODE: 75.
RESULT: Low Stage Did Not Start.
FIX: Specified start voltage at VR terminal was not achieved in low stage. Start relay was de-energized after 1 second.

CODE: 76.
RESULT: Low Stage Did Not Start 3 times.
FIX: For 3 consecutive low stage starts, the specified start voltage at VR terminal was not achieved and start relay was de-energized. Low stage locked out for 30 minutes.

CODE: 77.
RESULT: High Stage Did Not Start.
FIX: Specified start voltage at VS terminal was not achieved in high stage. Start relay was de-energized after 1 second.

CODE: 78.
RESULT: High Stage Did Not Start 3 times.
FIX: For 3 consecutive high stage starts, the specified start voltage at VS terminal was not achieved and start relay was de-energized. High stage locked out for 30 minutes.

CODE: 81.
RESULT: Low Stage Thermal Lockout.
FIX: Thermal cutout occurs in three consecutive low/high stage cycles. Low stage locked out 4 hours or until 24v power recycled.

CODE: 82.
RESULT: High Stage Thermal Lockout.
FIX: Thermal Lockout occurs in three consecutive high/low stage cycles. High stage locked out for 4 hours or until 24V power recycled.

bryant air conditioner error codes

bryant air conditioner codes


See What Our Customers Are Saying:

by Craig in Whitby on Twintech Heating and Cooling

I called Twintech during the Covid 19 crisis because our furnace was broken and it was still very cold during the nights. Dave answered all of my questions by phone but wanted to come have a look but only if our family felt comfortable having someone visit during the uncertainty surrounding the pandemic and was able to attend that very same affternoon.

He was very courteous and informative but most importantly he respected his and our safety by wearing medical gloves in our home and maintaining proper physical distancing. He reviewed the various options of the products that suited our needs going over not only price but quality of workmanship, warrantees and where the product was manufactured which were all important factors in making such a large purchase. You could tell that Dave had been in this industry for a very long time.

The installation was done by a fine young gentleman the very next day and we now have a toasty warm home to ride out this crisis in while humming along at 96% efficiency!

I would recommend this very professional, small family business for anyone in need of HVAC equipment or maintenance.

by Lucy in Markham on Twintech Heating and Cooling

My special thanks to Twintech teams! They had replaced my furnace and A/C, and installed a new humidifier for me 2 weeks ago. Dave, the sales manager, not only provided me with an honest quote on the best HVAC products with best quality and warranties, he also arranged portable heaters for me and sent supporting docs to energy company for energy audit. Above and beyond service!

Greg, Grant, Mitch had worked tirelessly and professionally to perform the HVAC installation. They worked with professional tools, and performed proper measurement readings after installation. They are very patient with all my questions, and very pleasant to communicate.

Great work guys! This company sure knows their products and they stand behind their services. My home comfort level has improved! I am glad that I can support an ethical and honest local family business.

by ddame on Twintech Heating and Cooling

Professional, flexible on price and delivered on time...well done. All you can ask for when getting a new furnace.

by nicole.el.thorn on Twintech Heating and Cooling

The work was done quickly and professionally. Workers were really polite and easy to work with.
Product works great!

by Gary in London on Twintech Heating and Cooling

Furnace broke down on a Wednesday, shopped around for prices and Friday Twintechs name came up from a referral from my wife's work. Called Dave 11 am, he came over around 1 pm. Gave me a very good price, I accepted. The guys were there two hours later to take the old furnace out and install the new one. All finished by 6:30pm. Finally heat.
They were very pleasant and helpful. As a result we are doing our A/C later this year with this company.

by Shawn L in Whitby on Twintech Heating and Cooling

After some extensive research, we settled on Twintech for our new furnace. The service - from Dave's initial visit - through to the installation was absolutely fantastic.

Dave was super-patient with our many questions, did not try to "up-sell" us into buying things we don't need, knowledgeable, friendly and all-around an excellent Advisor.

I've forgotten the names of the installers but they were superb as well. They showed up on-time, did all the work with no mess or intrusion, removed the old furnace and installed the new one in one day; all with no impacts to our day-to-day life.

I cannot recommend Twintech enough, especially over any of 'bigger guys' who tried to sell us a bunch of thing we don't need. Twintech were fantastic and my wife and I are very pleased with our purchase.

by Stephen from Pickering on Twintech Heating and Cooling

From the minute I met Dave and discussed my new furnace needs I knew I was in good hands. He was patient, knowledgeable and very professional through the quotation process.

Grant and Greg did an outstanding job on the install. They did a great job of explaining the defects with my old furnace. The quality of the installation was excellent and the attention to detail was on another level. The old adage “You get what you pay for” couldn’t be more true as I feel I received great value, skilled expertise and high quality customer service. I highly recommend Twintech for all your heating and cooling needs.

by Arthur on Twintech Heating and Cooling

Glad to have found a not-too-big local firm that provided the needed expertise, quality workmanship, and competitive pricing as well. In and out in one day, removed the old units, did a nice job installing all of the new units, and left no debris. Even have a service contract that far outshined the big company offerings. Would definitely recommend them.

by Leriksen on Twintech Heating and Cooling

Appreciated a quick response to my request. Dave and Greg were very professional and made the experience seamless.

by petesalmon938 from Pickering on Twintech Heating and Cooling

Very professional through the entire process. Installation and removel was done on a sloppy winter day, they put down runners on the floors and stairs and when they left, there wasn;t any sign of someone being in our house. Furnace works great as promised.

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bryant air conditioner error codes