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When the fan spins, it helps remove heat from the system. If this motor stops turning, the unit cannot move heat, leading to overheating and system shutdown.
Specifications
- Part number: 1098503
- Brand: Heil
- Part type: Condenser fan motor
- Amps: 1.2 Amps
- Frame: 48 NEMA
- Phase: Single Phase
- Rotation: Counterclockwise (CCW)
- Rpm: 1140 RPM
- Voltage: 575 Vac
- HP: must be the same
- RPM and volts: must be the same
- Rotation and shaft: match, or pick a reversible motor
From the maker's and parts sellers' listings for this number. Compare them with the label on your old part.
What the Condenser Fan Motor Does
The condenser fan motor sits near the top of the outdoor section. It turns the fan blades to draw air across the condenser coil.
This airflow cools down the hot refrigerant circulating inside the tubing. If the motor fails, heat builds up quickly, which causes the unit to overheat and cycle off on safety controls.
Understanding the 1098503 Motor Specs
Every replacement motor must match the electrical and physical ratings of the old part. The label on part number 1098503 shows specific ratings that keep your system running safely.
- Voltage: 575 Vac. This high voltage rating must match your power supply.
- Current: 1.2 Amps, which is the running electrical draw.
- Speed: 1140 RPM, indicating how fast the motor shaft spins under normal load.
- Rotation: Counterclockwise (CCW). Air must blow in the right direction.
- Phase: Single Phase, matching the line connection type.
- Frame: 48 NEMA, which defines the physical diameter and mounting pattern.
Signs of Failure and Replacement Steps
A motor that stops spinning is not always bad. If the fan hums but will not spin, a weak or bad capacitor is often the problem. Checking the capacitor first makes sense because it is a separate part.
When you need to change the motor, follow careful steps to install it safely.
- Shut off electrical power at the breaker panel and pull the outdoor disconnect handle.
- Use a meter to test and confirm there is no voltage at the unit.
- Discharge the capacitor using an insulated tool before disconnecting wires.
- Take a photo of every wire connection so you can match the locations later.
- Loosen the fan blade from the motor shaft and unbolt the motor from its mounting bracket.
- Mount the motor and reconnect the wiring one wire at a time using your reference photo.
Read your old part
- Locate the metal data plate or printed label on the side of your old motor casing.
- Wipe away dirt to read the part number and verify it lists 1098503.
- Check the voltage rating on the old label to ensure it reads 575 Vac.
- Confirm the speed is 1140 RPM and the rotation is Counterclockwise (CCW).
- Verify the physical frame size matches 48 NEMA so the mounting bracket aligns properly.
When to call a pro
Working with high-voltage equipment carries severe electrical shock risks. If you are uncomfortable working with electrical disconnects, testing for live voltage, or safely discharging a capacitor, hire a licensed HVAC technician to complete the repair.
Questions
Why does my fan motor hum without spinning?
A fan that hums but will not spin is often caused by a bad capacitor rather than a failed motor. The capacitor provides the electrical push the motor needs to start. It is a good practice to check the capacitor before replacing the motor.
What happens if the motor rotation direction is wrong?
The Heil 1098503 is rated for Counterclockwise (CCW) rotation. If a replacement spins in the wrong direction, it pulls or pushes air the wrong way. That prevents proper airflow across the coil and will cause the unit to overheat.
Do I need a new capacitor when replacing this motor?
A new motor often needs a new capacitor rated specifically for it. Always check the requirements of the replacement motor to ensure the capacitor microfarad rating matches.
Related part numbers
- 1069892Condenser Fan Motor, HeilSame brand and type
- 1080612Condenser Fan Motor, HeilSame brand and type
- 1172508Condenser Fan Motor, GenteqSame part type
- 1009524Igniter Reference Guide, HeilSame brand
- 1173665Condenser Fan Motor, ArcoaireSame part type
- 1070056Condenser Fan Motor, TempstarSame part type
- 9161124-02Condenser Fan Motor, Ice-O-MaticSame part type
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