Troubleshooting Guide

START

Is red LED status light on?

YES

Is there 115v at L1 and L2?		NO
Is there 115v at L1 and L2?

	YES
		NO

Is there 24v at SEC-1 and SEC-2?
Is there 24v at SEC-1 and SEC-2?

	YES

Replace control center.

Is door switch closed?

YES

Is there 115v going to switch?

YES

Replace door switch.

Replace transformer.

Close door switch and go to start.

Is circuit breaker closed?			NO
Is circuit breaker closed?

	YES

		Close circuit breaker and
		go back to start.

Is red LED status light blinking rapidly without a pause?

Is red LED status light blinking ON/OFF slowly with a combination of short and long flashes?

YES

Determine status code. The status code is a 2 digit number with the first digit determined by the number of short flashes and the second digit by the number of long flashes.

YES

Check for correct line voltage polarity. If units are twinned, check for proper low-voltage (24v) transformer phasing.

Check for previous fault by momentarily shorting the TEST terminal and the C terminal until the LED goes out. LED will flash the status code of any previous fault or the code No. 11 (1 short and 1 long flash) if no previous fault. After the control repeats the code 3 times, the control will go through a brief component test sequence. The inducer will start and run for the entire component test. The HSI, blower motor heat speed, and blower motor cool speed will run for 10-15 sec each.

Was there a previous fault code other than No. 11?

YES

Does control respond to W, Y, or G 24-vac thermostat signals?

YES

Check for continuity in wire from circuit breaker to furnace.

Check room thermostat or interconnecting cable.

Is 24 vac present at W, Y, or G terminals on the control?

YES

Go to section with status code determined.

Run system through a heating or cooling cycle to check operation. Status codes are erased after 48 hrs or whenever power (115v or 24v) is interrupted.

Replace control if it does not respond to 24-vac signal at W, Y, or G screw terminals.

A99123a

58YAV specifications

The Carrier 58YAV is a high-efficiency gas furnace that has gained recognition in the HVAC industry for its performance and advanced technology. Specifically designed to meet the needs of modern homes, the 58YAV integrates various features that enhance comfort, energy efficiency, and reliability.

One of the standout characteristics of the 58YAV is its exceptional AFUE (Annual Fuel Utilization Efficiency) rating, which often reaches up to 96%. This means that the furnace converts a significant portion of fuel into heat, translating into lower energy bills and a reduced carbon footprint. The unit operates using a two-stage heating system which allows for greater temperature consistency and improved energy savings. The ability to operate at a low stage during mild conditions prevents energy wastage while providing adequate heating comfort.

The 58YAV employs advanced modulating technology that provides precise temperature control. This technology enables the furnace to adjust its heating output based on the specific demands of the home, ensuring optimal comfort without unnecessary energy consumption. Additionally, the integrated variable-speed blower motor enhances air circulation and reduces noise during operation, creating a quieter home environment.

Moreover, equipped with a smart thermostat capability, the Carrier 58YAV can be paired with Carrier’s Comfort™ series controls for enhanced programmability and remote access. This feature allows homeowners to conveniently adjust their home’s heating settings from their smartphones or other smart devices, maximizing convenience and control over their indoor environment.

The furnace also features a durable and robust cabinet design that ensures long-lasting performance. With enhanced insulation, the 58YAV minimizes operational noise and provides greater energy efficiency. Safety features, including a pressure switch and flame sensor, are integrated into the system to ensure safe and reliable operation.

In terms of installation, the Carrier 58YAV is designed to offer versatility with multiple venting options, allowing it to fit seamlessly into various home configurations. Its compact design makes it suitable for various spaces, from attics to basements.

Overall, the Carrier 58YAV is a pinnacle of modern heating technology, providing homeowners with efficient, reliable, and smart heating solutions that align with today’s energy standards. Its blend of efficiency, comfort, and innovative features establishes it as a top choice in the gas furnace market.