Why didn't my condenser fan motor last?

9 times out of 10, a weak run cap drives the motor to fail. The cap loses MFD over time, the motor pulls higher amps, the bearings overheat. Replace the cap every 5-7 years and the motor lasts much longer.

How do I match HP, RPM, and frame size?

HP and RPM come off the data plate. Frame size (42Y/48Y) describes the mount dimensions — 42Y is the smaller frame, 48Y is larger. Shaft diameter is usually 1/2" but verify. Rotation (CW/CCW from shaft end) MUST match your existing setup. Bring the old motor in — we'll match every dimension at the counter.

What does '2-speed' mean on a condenser motor?

2-speed condenser motors have two RPM ranges (typically 850 and 1075). The control board chooses based on stage call. Useful for 2-stage condensers — won't help on a single-stage system.

How long does a condenser fan motor last in Dallas?

6-10 years typical. Open-frame motors exposed to rain, sprinkler overspray, and afternoon sun fail faster. Sun-side units typically die first.

Low Stock

Universal

W51-16CJA1-02 – CONDENSER MOTOR (1/6 HP, 1075 RPM, 10MFD)

Name: W51-16CJA1-02 - CONDENSER MOTOR (1/6 HP, 1075 RPM, 10MFD)
Brand: Universal
SKU: W51-16CJA1-02
Price: 129.72 USD
Availability: InStoreOnly

SKU W51-16CJA1-02·Replaces W51-16CJA1-02

$129.72

In-store price · paid at counter

Low Stock at our Dallas counter

Tested before you leave. Free at the counter.

In-Store Only — We Don’t Ship

Every part is sold in person at our Dallas counter. No shipping, no online orders. Solo venta en tienda — no hacemos envíos.

Visit our Dallas counter to purchase

10226 Plano Rd, Suite 104 · Dallas TX 75238

Call (214) 340-9421 Get directions

Open now · Closes 7pm·Mon–Fri 10am–7pm · Sat 10am–3pm

Free part testingBench-tested at the counter

27,000+ in stockToday, on the shelf

4.9 · 546 reviewson Google

Since 199828 years on Plano Rd

Pro tip

Before you swap a condenser fan motor, pull the run cap and bring it in — we bench-test free. A weak cap fails first, then takes the motor's bearings with it. If the motor really is bad: match HP, RPM (1075 vs 825 vs 1625 — different jobs), frame (42Y/48Y), shaft diameter (1/2" common), and rotation (CW or CCW looking at the shaft end). Bring the old motor in; we'll line them up side-by-side.

Free Part Testing

27,000+ In Stock

4.9 Stars · 546+ Reviews

Since 1998

🏪 In-Store Pickup Only — We do not offer shipping or online ordering. Visit our Dallas location to purchase.

In Stock

Visit our Dallas store to purchase

Call (214) 340-9421 Get Directions

In Stock — Pick Up at Our Dallas Store

10226 Plano Rd, Suite 104, Dallas TX 75238

Questions? Call or text (214) 340-9421

Mon–Fri 10 am – 7 pm | Sat 10 am – 3 pm

Symptoms of failure

Outdoor fan will not spin at all
Fan spins slowly, or only starts if you nudge it
Loud grinding, humming or squealing from the outdoor unit
AC runs but the house will not cool down
Motor housing is too hot to touch
System keeps tripping on high pressure and needing a reset

Seeing these does not always mean this part is the culprit. Bring the old one in and we will meter it at the counter, free, before you buy.

If your AC fan isn’t spinning or spins slowly, the condenser fan motor is likely the problem. This 1/6 HP motor runs at 1075 RPM and requires a 10 MFD capacitor. It replaces several Nidec/US Motors part numbers.

Specs: 1/6 HP, 1075 RPM, 208-230V, 10 MFD capacitor, reversible rotation

Replaces: EM3727F, W51-16CJA1-02, WG840727, WG840727HT

Fits: Residential condensers requiring a 1/6 HP motor at 1075 RPM with 10 MFD cap. Compatible with Goodman, Trane, Carrier, Rheem, and others.

Need help? See our AC Fan Not Spinning Guide.

In stock at Open To Public HVAC Parts in Dallas. We test parts at the counter before you buy. Call or text (214) 340-9421.

Specs

TypePSC single-speed condenser fan motor
Horsepower1/6 HP
RPM1075 RPM
Required Run Cap10 MFD
Frame48Y

Installing it yourself

Difficulty 3/5Typical time 30-45 minutes

Kill power at the outdoor disconnect and confirm 0V before touching anything.
Discharge the run capacitor. It holds a charge even with the power off.
Photograph the wiring and the fan blade height before you take anything apart.
Pull the fan blade off the shaft. The nut is often reverse-threaded.
Unbolt the motor from the fan grille, usually four bolts.
Match HP, RPM, frame, shaft diameter and rotation. RPM matters - 1075 and 825 are different jobs.
Mount the new motor, set the blade back to the same height, reconnect by wire color.
Replace the run capacitor at the same time. A weak cap is usually what killed the last motor.

Power off at the disconnect first, every time. Not sure partway through? Bring it to the counter and we will walk it with you.

$129.72

Low Stock · Dallas counter

Call Directions