Amana Electric Furnace AMV 90704 Manual

The Amana AMV 90704 is a high-efficiency electric furnace designed for residential heating applications. This furnace features multiple heating stages, variable speed blower motor, durable construction, and advanced safety controls. Below are key sections for safety, features, installation, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Electrical Connections 7. Operation 8. Maintenance 9. Safety Features 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: Electric heating elements, Variable speed blower motor, Control board, Safety switches, Air filter compartment, Service access panels.

Feature	Description
Heating Capacity	Multiple stages up to specified BTU output
Blower Motor	Variable speed ECM motor for efficiency
Heating Elements	Nickel-chromium electric heating coils
Control Board	Microprocessor-based for precise control
Safety Switches	High-limit and rollout protection
Air Filter	Standard 1-inch or 4-inch media filter
Service Access	Removable panels for maintenance
Wiring Connections	Clearly labeled terminal blocks
Drain Connection	For humidifier or AC coil if installed
Voltage Rating	240V AC, 60Hz operation

Installation

Unpack and inspect contents. Ensure proper location and clearances.

Position furnace: Place on stable, level surface with proper clearances.
Ductwork connection: Connect supply and return ducts securely.
Electrical connections: Connect to 240V power supply with proper disconnect.
Thermostat wiring: Connect compatible thermostat following wiring diagram.
Air filter installation: Install appropriate filter in filter rack.

WARNING! Installation must be performed by qualified HVAC technician. Ensure power is disconnected during installation.

First-Time Setup

Power on furnace; verify proper operation.

Power connection: Ensure proper voltage and phase at disconnect.
Thermostat setup: Program thermostat for heating operation.
Blower settings: Adjust blower speed if required for application.
Safety check: Verify all safety switches are functional.
Test operation: Run through complete heating cycle.

CAUTION! Always follow local electrical codes. Test safety controls before regular operation.

Specifications

Model: AMV 90704
Heating Capacity: Up to specified BTU/h
Voltage: 240V AC, 60Hz
Stages: Multiple heating stages
Blower Type: Variable speed ECM
Airflow: Adjustable CFM settings
Filter Size: Standard 1" or 4" media
Dimensions: Standard furnace cabinet size
Weight: Approximately 120-150 lbs
Warranty: Limited lifetime heat exchanger

Controls and Settings

Access control board via service panel. Thermostat controls heating operation.

Control Board: LED status lights, DIP switch settings, terminal connections.

Heating Stages: Multiple stage operation for efficiency. Blower Control: Variable speed settings for different applications. Temperature Limits: Adjustable high-limit settings. Diagnostic Lights: LED indicators for troubleshooting. DIP Switches: Configuration for blower speeds and timing.

Electrical Connections

Power supply: 240V AC. Thermostat: Low voltage connections. Safety circuits: High voltage disconnects.

Turn off power at main disconnect before servicing.
Verify proper voltage and phase at power terminals.
Connect thermostat following wiring diagram.
Ensure all connections are tight and secure.

Tip: Use proper gauge wire for all electrical connections.

Operation

Normal heating cycle operation and sequence.

Thermostat call: Thermostat calls for heat.
Blower start: Indoor blower starts after delay.
Heating activation: Heating elements energize in sequence.
Temperature monitoring: Control board monitors temperatures.
Cycle completion: Heating elements de-energize when satisfied.
Blower run-on: Blower continues for post-purge cycle.

WARNING! Do not override safety controls. Contact technician if abnormal operation occurs.

Maintenance

Regular maintenance ensures optimal performance and longevity.

Monthly: Check and replace air filter as needed.
Seasonal: Inspect electrical connections and components.
Annual: Professional inspection and cleaning.
As needed: Clean blower assembly and heat exchanger.

CAUTION! Always disconnect power before performing maintenance.

Safety Features

High-limit switches: Prevent overheating. Fusible links: Protect against electrical faults. Door safety switches: Disable operation when panels removed. Overcurrent protection: Circuit breakers or fuses.

Regulatory Information

UL listed and meets applicable safety standards. Complies with NEC and local electrical codes. Manufactured to Amana quality standards. For technical support, contact Amana Customer Service at 1-888-292-6262 or visit www.amana-hac.com.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No heat	Power, thermostat, safety switch	Check power supply; verify thermostat setting; reset safety switches.
Blower not running	Motor, capacitor, control board	Check motor operation; test capacitor; verify control board signals.
Insufficient heat	Filter, elements, airflow	Replace filter; check heating elements; verify proper airflow.
Frequent cycling	Thermostat, limit switch	Check thermostat location; verify limit switch operation.
Error codes	Control board diagnostics	Refer to diagnostic chart; check LED status lights.

Reset: Power cycle at disconnect if safe to do so.

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