amana furnace troubleshooting manual

The Amana Furnace is a high-efficiency heating system designed for residential use with features including variable-speed blower motors, electronic ignition systems, multiple heat stages, and advanced diagnostic controls. Below are key sections for safety, common issues, diagnostic procedures, maintenance, and technical specifications.

Safety Precautions

Before troubleshooting, ensure proper safety measures are followed to prevent injury or damage to equipment.

Common Issues and Symptoms

Typical problems encountered with Amana furnaces and their visible symptoms.

1. No heat production: Furnace fails to generate warm air
2. Insufficient heating: Room temperature doesn't reach thermostat setting
3. Frequent cycling: Unit turns on and off repeatedly
4. Unusual noises: Banging, rattling, or squealing sounds during operation
5. Error codes: Control board flashing specific LED patterns
6. Gas odor: Smell of natural gas around furnace area

WARNING! If you detect gas odor, immediately evacuate and contact gas company. Do not operate electrical switches.

Diagnostic Procedures

Step-by-step troubleshooting process for common furnace problems.

1. Check thermostat: Ensure set to HEAT mode, temperature above room temp
2. Verify power: Check circuit breaker and furnace power switch
3. Inspect filter: Replace if dirty or clogged (monthly recommended)
4. Check gas supply: Confirm gas valve is open and pilot light (if applicable)
5. Review error codes: Note blinking LED pattern on control board
6. Test safety switches: Verify limit switches and pressure sensors

CAUTION! Only qualified technicians should service gas valves and electrical components.

Technical Specifications

• Model Series: AMV9, AVXC16, AMEC96
• Input BTU/h: 40,000 - 120,000 BTU
• Efficiency Rating: 80% - 98% AFUE
• Voltage: 120V AC, 60Hz
• Motor Type: Variable-speed ECM blower motor
• Ignition System: Hot surface ignitor
• Heat Stages: Single or two-stage heating
• Venting: PVC or metal depending on efficiency rating
• Warranty: Limited lifetime heat exchanger warranty

Control Board Indicators

Understanding LED flash codes for diagnostic purposes.

LED Patterns: Steady on = normal operation; Flashing = error condition

1 Flash: Ignition lockout - failed ignition attempts
2 Flashes: Pressure switch error - switch stuck open/closed
3 Flashes: Limit circuit fault - high temperature limit
4 Flashes: Flame rollout switch - burner compartment overheat
5 Flashes: Pressure switch stuck closed - inducer motor issue
6 Flashes: Blower motor overload - motor overheating
7 Flashes: Gas valve circuit fault - electrical issue
Continuous Flash: Normal operation with call for heat

Maintenance Guidelines

Regular maintenance procedures to ensure optimal furnace performance.

1. Monthly: Inspect and replace air filter as needed
2. Annual: Professional inspection and cleaning
3. Seasonal: Check vent pipes for obstructions
4. Biannual: Lubricate motor bearings if required
5. Annual: Test safety controls and limit switches
6. Seasonal: Clean flame sensor and burners

Tip: Keep area around furnace clear of flammable materials and maintain proper airflow.

Error Code Interpretation

Detailed explanation of common error codes and recommended actions.

1. Code 1: Ignition failure - check gas supply, ignitor, flame sensor
2. Code 2: Pressure switch stuck open - check inducer motor, venting
3. Code 3: High limit switch open - check airflow, dirty filter
4. Code 4: Flame rollout switch open - check burners, heat exchanger
5. Code 5: Pressure switch stuck closed - check tubing, switch
6. Code 6: Blower motor fault - check motor, capacitor
7. Code 7: Gas valve circuit - check wiring, valve operation

WARNING! Multiple lockouts may indicate serious issues requiring professional service.

Component Testing

Procedures for testing individual furnace components.

Reset Procedures

Methods for resetting furnace after lockout or error conditions.

Power Cycle Reset: Turn off power at breaker for 30 seconds, then restore
Manual Reset: Press and hold reset button on control board for 3 seconds
Thermostat Reset: Turn thermostat to OFF position for 5 minutes, then HEAT
Lockout Reset: After 3 ignition attempts, wait 1 hour for automatic reset

CAUTION! Do not repeatedly reset furnace without addressing underlying issue.

Warranty Information

Amana furnace warranty coverage and registration requirements.

Heat Exchanger: Limited lifetime warranty
Parts: 10-year limited warranty on functional components
Labor: 1-year limited warranty on installation labor
Registration: Required within 60 days of installation for full coverage
Transferable: Limited warranty transfer to subsequent homeowners
Exclusions: Damage from improper installation, maintenance, or misuse

Professional Service

Service Contact: 1-888-292-6262; www.amana-hac.com

Emergency: For gas leaks or carbon monoxide concerns, evacuate immediately and call 911.