Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner SHORT CYCLING Error Fix: AC Turns On and Off Rapidly

The outdoor unit starts, runs for only a few minutes or less, shuts off, then restarts. This rapid on-off cycling stresses the compressor and does not effectively cool the home. Causes: (1) Dirty condenser coil — the outdoor coil is clogged with dirt, leaves, grass clippings, cottonwood seeds, or pet hair, preventing the unit from rejecting heat. The compressor overheats and trips on its internal overload protector. Clean the condenser coil with a garden hose. (2) Failed condenser fan motor — if the fan is not spinning, the condenser cannot dissipate heat. (3) Low refrigerant causing abnormal operating pressures. (4) Oversized AC unit for the space — cools too quickly, satisfies the thermostat before properly dehumidifying the air. (5) Faulty thermostat sending intermittent signals. (6) Failing compressor with internal overload tripping.

warning2 fixes available✨ Free fix available

Quick Answer

Error SHORT CYCLING on the Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner means: AC Turns On and Off Rapidly. The top-ranked community fix is “Test and Replace the Condenser Fan Motor” (medium difficulty, ~90 min, DIY cost: $0). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · air conditioner

Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.

When to Call a Professional

While many air conditioner repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $250-$400.

Other Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner Error Codes

CAPACITOR FAIL

Run/Start Capacitor Failure

2 fixes

CONTACTOR FAIL

Contactor Failure or Pitting

2 fixes

FAN MOTOR FAIL

Condenser Fan Motor Failure

2 fixes

FREEZING UP

Evaporator Coil Freezing — Ice on Refrigerant Lines

2 fixes

NOT COOLING

AC Not Cooling — Outdoor Unit Running

2 fixes

NOT STARTING

Outdoor Unit Won't Start

2 fixes

REFRIGERANT LEAK

Refrigerant Leak — Low System Charge

2 fixes

People Also Ask About Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner Error SHORT CYCLING

What does error code SHORT CYCLING mean on a Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner?

Error code SHORT CYCLING on the Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner means: AC Turns On and Off Rapidly. The outdoor unit starts, runs for only a few minutes or less, shuts off, then restarts. This rapid on-off cycling stresses the compressor and does not effectively cool the home. Causes: (1) Dirty condenser coil — the outdoor coil is clogged with dirt, leaves, grass clippings, cottonwood seeds, or pet hair, preventing the unit from rejecting heat. The compressor overheats and trips on its internal overload protector. Clean the condenser coil with a garden hose. (2) Failed condenser fan motor — if the fan is not spinning, the condenser cannot dissipate heat. (3) Low refrigerant causing abnormal operating pressures. (4) Oversized AC unit for the space — cools too quickly, satisfies the thermostat before properly dehumidifying the air. (5) Faulty thermostat sending intermittent signals. (6) Failing compressor with internal overload tripping.

How do I fix error code SHORT CYCLING on my Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner?

The most successful fix is "Test and Replace the Condenser Fan Motor" (medium difficulty, ~90 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

Is error code SHORT CYCLING on a Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner serious?

This error is rated warning severity. It is generally not urgent and can often be resolved with a simple DIY fix.

Can I fix Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner error SHORT CYCLING myself?

Yes — the top-ranked community fix ("Test and Replace the Condenser Fan Motor") is rated medium difficulty and takes about 90 minutes. Tools needed: Multimeter, Nut driver set, Phillips screwdriver.

How much does it cost to repair Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner error SHORT CYCLING?

DIY cost: $0. Professional repair typically costs $250-$400. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner have?

The Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner has 7 other known error codes, including: CAPACITOR FAIL (Run/Start Capacitor Failure), CONTACTOR FAIL (Contactor Failure or Pitting), FAN MOTOR FAIL (Condenser Fan Motor Failure), FREEZING UP (Evaporator Coil Freezing — Ice on Refrigerant Lines), NOT COOLING (AC Not Cooling — Outdoor Unit Running), and 2 more.

What other error codes does the Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner have?

The Rheem Rheem Classic Series RA16 3-Ton 16 SEER Central Air Conditioner has 7 other known error codes:

CAPACITOR FAIL — Run/Start Capacitor Failure (2 fixes)
CONTACTOR FAIL — Contactor Failure or Pitting (2 fixes)
FAN MOTOR FAIL — Condenser Fan Motor Failure (2 fixes)
FREEZING UP — Evaporator Coil Freezing — Ice on Refrigerant Lines (2 fixes)
NOT COOLING — AC Not Cooling — Outdoor Unit Running (2 fixes)
NOT STARTING — Outdoor Unit Won't Start (2 fixes)
REFRIGERANT LEAK — Refrigerant Leak — Low System Charge (2 fixes)

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