Model 345MAV Diagnostic Chart, See Fig

MODEL 345MAV DIAGNOSTIC CHART

(See Fig. 2.)

FAULT
CODE	FAULT CODE DESCRIPTION	CHECKLIST

13 or 33	Limit Switch Lockout	Check for dirty air ﬁlter.
13 or 33	Limit Switch Lockout	Check for blocked return-air or supply-air grilles.
		Check for blocked return-air or supply-air grilles.

		Check to be sure manual shutoff valve in gas supply pipe is in the open position. (Follow
		start-up procedure if you open gas line.)
14 or 34	Ignition Lockout or	NOTE: Turn off the electrical supply and remove access doors before continuing with this
14 or 34	Ignition Proving Fault	checklist.
	Ignition Proving Fault	checklist.
		Check to be sure control switch or knob on gas valve is in ON position. (Follow start-up
		procedures if you must reset switch or knob to ON position.)

24	Furnace Fuse Open	Check for blown fuse and possible short in 24-v wiring.

		Check to make sure that all PVC pipes leading into the combustion-air intake and vent/
31	Pressure Switch Not Closed	exhaust are free from any cracks and sags. Also check the combustion-air intake adjacent to
		the furnace and vent/exhaust pipe on the outside of your home for blockage.

12, 21, 22,	Any Other Fault Code	Call dealer for service.
or 23	Any Other Fault Code	Call dealer for service.
or 23

No Fault	Furnace Fails to Operate and No	Check thermostat for proper temperature setting.
Code	Furnace Fails to Operate and No	Check for blown fuses and circuit breakers.
Code	Fault is Signaled	Check for blown fuses and circuit breakers.
Signaled	Fault is Signaled	Check to be sure blower access panel is properly in place.
Signaled		Check to be sure blower access panel is properly in place.

NOTES:

1.Light on continuously means control has power and working properly.

2.The fault code is a 2 digit number. The ﬁrst digit is determined by the number of short ﬂashes of the light and the second digit is determined by number of long ﬂashes of the light.

345MAV specifications

The Bryant 345MAV is a premier choice in the realm of residential heating and cooling systems, encapsulating advanced technologies, high efficiency, and remarkable performance. Designed for homeowners seeking reliability and comfort, this model exemplifies modern HVAC (Heating, Ventilation, and Air Conditioning) innovations.

One standout feature of the Bryant 345MAV is its impressive energy efficiency. With a high SEER (Seasonal Energy Efficiency Ratio) rating, it operates at peak levels while consuming less energy. This not only reduces utility bills but also supports environmental sustainability, making it an ideal selection for eco-conscious consumers. The model employs variable-speed technology, which allows the system to adjust its output based on current heating and cooling needs. As a result, it provides consistent indoor comfort while minimizing temperature fluctuations.

The Bryant 345MAV incorporates advanced refrigerant technologies designed for optimal performance. It uses R-410A refrigerant, which is known for its lower environmental impact compared to traditional refrigerants like R-22. This environmentally friendly aspect aligns with regulations aimed at reducing ozone depletion, thereby promoting a greener approach to heating and cooling.

Reliability is another hallmark of the Bryant 345MAV. Engineered with precision, this model features a durable build designed to withstand varying weather conditions. The system is equipped with a robust compressor that is engineered for longevity and minimal noise during operation. Homeowners will appreciate the quiet performance of the 345MAV, ensuring peace in their living spaces.

Comfort also extends to the user experience with the inclusion of a smart thermostat option. This integration allows homeowners to manage their heating and cooling systems remotely, enhancing convenience and control. Programmable settings can optimize energy use based on individual schedules, facilitating both comfort and savings.

In summary, the Bryant 345MAV is a top-tier solution for residential climate control, blending energy efficiency, innovative technology, and unmatched reliability. With its variable-speed operation, environmentally friendly refrigerant, and smart features, the 345MAV represents a significant advancement in the HVAC field. Homeowners investing in this model can expect a system that not only meets their heating and cooling needs but exceeds them in terms of efficiency and comfort.