Table 10 – Troubleshooting Chart - Gas Furnace Operation

SYMPTOM

 

 

 

 

CAUSE

 

REMEDY

 

 

 

 

 

 

 

 

 

 

Water in gas line

Drain. Install drip leg.

 

No power to unit

Check power supply fuses, wiring or circuit

 

breaker.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check transformer.

 

No 24--v power supply to control circuit

NOTE: Some transformers have internal over--

 

current protection that requires a cool--down peri-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

od to reset.

 

 

 

 

 

 

 

 

 

Burners will not ignite

Mis--wired or loose connections

Check all wiring and wire nut connections

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check flame ignition and sense electrode posi-

 

 

 

 

 

 

 

 

Misaligned spark electrodes

tioning.

 

 

 

 

 

 

 

Adjust as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Check gas line for air. Purge as necessary.

 

 

 

 

 

 

 

NOTE: After purging gas line of air, wait at least 5

 

No gas at main burners

minutes for any gas to dissipate before attempt-

 

 

 

 

 

 

 

ing to light unit.

 

 

 

 

 

 

 

2. Check gas valve.

 

 

 

 

 

 

 

 

 

 

Inducer pressure switch not closing

1. Check pressure switch wires, connections,

 

and tubing. Repair or replace if necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Dirty air filter

Clean or replace filter as necessary

 

Gas input to unit too low

Check gas pressure at manifold match with that

 

on unit nameplate

 

 

 

 

 

 

 

Inadequate heating

 

 

 

 

 

 

 

 

Unit undersized for application

Replace with proper unit or add additional unit

 

Restricted airflow

Clean or replace filter. Remove any restriction.

 

Limit switch cycles main burners

Check rotation of blower, temperature rise of unit.

 

Adjust as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1. Tighten all screws around burner compartment

 

 

 

 

 

 

 

2. Cracked heat exchanger. Replace.

 

 

 

 

 

 

 

3. Unit over--fired. Reduce input (change orifices

Poor flame characteristics

Incomplete combustion results in: Aldehyde odors,

or adjust gas line or manifold pressure).

carbon monoxide, sooting flame, floating flame

4. Check burner alignment.

 

 

 

 

 

 

 

 

5. Inspect heat exchanger for blockage. Clean

 

 

 

 

 

 

 

as necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

577D-- -- A

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Bryant 577D----A installation instructions Troubleshooting Chart Gas Furnace Operation, Burners will not ignite

577D----A specifications

The Bryant 577D----A is a highly regarded model in the HVAC industry, representing a blend of efficiency, performance, and advanced technology. This heating and cooling unit is designed to cater to a variety of residential and light commercial applications, making it a versatile choice for consumers looking to enhance their indoor climate control systems.

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In conclusion, the Bryant 577D----A stands out as a superior choice for those seeking reliability and efficiency in their HVAC solutions. With its energy-efficient operation, advanced technologies, and robust construction, it serves as a valuable investment for homeowners committed to comfort and sustainability.