Bryant 345MAV CHECK-UP Checklist, Before YOU Request a Service Call, For Insufficient Airflow

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ACHECK-UP CHECKLIST

Your furnace represents an important investment in your family’s comfort and your home’s value. To keep it performing properly and as a preven- tative to future problems, have a trained service specialist give your furnace a professional check-up annually. The following checklist can be used as a guideline to proper service:

Inspect all flue gas passages, burn- ers, heat exchangers, coupling box(es), and inducer assembly.

Inspect all combustion-air and vent piping inside structure and vent pipe termination outside the structure.

Check gas pipes leading to and inside of your furnace for leaks.

Inspect and clean the blower motor and wheel.

NOTE: The inducer and blower motors are pre-lubricated and require no addi- tional lubrication. These motors can be identified by the absence of oil ports on each end of the motor.

Inspect and change or clean air fil- ter(s) if necessary.

Inspect all supply- and return-air ducts for obstructions, air leaks, and insulation. Remedy any problem when necessary.

Inspect the return-air duct connec- tion(s) at the furnace to ensure it is physically sound, sealed to the furnace casing, and terminates outside the space containing the furnace.

Inspect electrical wiring, connec- tions, and components for loose connections.

Perform an operational checkout to determine whether your furnace is working properly and if it requires adjustments.

Inspect all condensate drain tubes and condensate trap assembly for leaks. The condensate removal system should be cleaned annually by a quali- fied service agency. Refer to the Ser- vice and Maintenance Instructions for further information.

Examine the physical support of the furnace. The support should be sound with no cracks, sagging, gaps, etc. around the base.

Check furnace for any obvious signs of deterioration.

BEFORE YOU

REQUEST A

SERVICE CALL

If your furnace is not operating or not performing properly, you may save the expense of a service call by check- ing a few things yourself before calling for service.

FOR INSUFFICIENT AIRFLOW:

Check for dirty air filter(s).

Check for blocked return-air or sup- ply-air grilles throughout your home. Ensure they are open and unobstructed.

If problem still exists, call your dealer for service.

IF FURNACE FAILS TO OPERATE:

Follow this checklist step by step, advancing to the next step only if fur- nace fails to start.

Check thermostat for proper tem- perature. Is thermostat set above room temperature?

Is thermostat set to HEAT?

Check fuses and circuit breakers. Is electrical supply on?

Is manual shutoff valve in gas supply pipe in open position? (Follow start-up procedures if you open gas valve.)

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NOTE: Turn off electrical supply before continuing with checklist.

Is control switch or knob on gas valve in ON position? (Follow start-up procedures if you must reset switch or knob to ON position.)

Check manual reset flame rollout switch located on the burner box. (See Fig. 2.) If furnace has experienced high temperature conditions, this switch will shut off the furnace. Reset it by pushing the button on the switch. If it trips again, shut down the furnace and call for service. See “Shutting Down Your Furnace” section in this manual.

Check for obstructions around the vent termination.

If your furnace still fails to operate, call your service representative.

For your convenience, record the fur- nace product and serial numbers on page 2. Should you ever require ser- vice, you will have ready access to the information needed by your service representative.

This furnace has an LED operation and fault code display to aid the installer, service technician, or home- owner while installing or servicing the unit. The LED code can be seen by removing the access door and viewing LED(s) through the view port in the blower access panel.

NOTE: Removing the blower access panel or turning off the 115-v electrical power supply will terminate LED diag- nostic code display.

To decipher the meaning of the LED code, and suggested action, the follow- ing cross-reference can be used.

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Contents Model 345MAV Condensing GAS Furnace Model 345MAV Furnace Welcome to a NEW Generation of ComfortModel 345MAV Furnace Shown in Upflow Position Furnace ComponentsSafety Considerations Important FactsStarting Your Furnace Steps for Starting Your Furnace Performing Routine Maintenance Shutting Down Your FurnaceFiltering OUT Trouble AIR Filter Located in Side AIR Filters Located in BottomDON’T Forget Your Furnace Reinstall burner enclosure frontBefore YOU Request a Service Call CHECK-UP ChecklistFor Insufficient Airflow If Furnace Fails to OperateSee Fig Model 345MAV Diagnostic Chart
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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.