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SHORT CYCLE

Rheem · Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace

Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace SHORT CYCLE Error Fix: Furnace Short Cycling

The furnace starts, runs briefly, then shuts off before reaching setpoint. Most common cause: dirty air filter restricting airflow, causing the high-limit switch to trip from overheating. Replace the air filter. Also check for blocked registers, failing blower motor capacitor, or oversized furnace.

warning2 fixes available

Quick Answer

Error SHORT CYCLE on the Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace means: Furnace Short Cycling. The top-ranked community fix is “Test and Replace Blower Motor Capacitor or Evaluate Furnace Sizing” (medium difficulty, ~60 min, DIY cost: $20-$40). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · furnace

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 furnace 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: $150-$250.

Other Rheem Models with Error SHORT CYCLE

Rheem R96V 96% AFUE Two-Stage Variable Speed Upflow Gas Furnace

furnace · 2 fixes

Other Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace Error Codes

1 FLASH

Normal — Heat Call Active

Rollout Switch Open

System Lockout — Ignition Failed

2 fixes

3 FLASH

Pressure Switch Stuck Closed

2 fixes

4 FLASH

Pressure Switch Stuck Open

2 fixes

5 FLASH

Flame Sensed Without Gas Valve Command

2 fixes

6 FLASH

Power Reversed or No Ground

2 fixes

7 FLASH

Low Flame Signal

2 fixes

People Also Ask About Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace Error SHORT CYCLE

What does error code SHORT CYCLE mean on a Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace?

Error code SHORT CYCLE on the Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace means: Furnace Short Cycling. The furnace starts, runs briefly, then shuts off before reaching setpoint. Most common cause: dirty air filter restricting airflow, causing the high-limit switch to trip from overheating. Replace the air filter. Also check for blocked registers, failing blower motor capacitor, or oversized furnace.

How do I fix error code SHORT CYCLE on my Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace?

The most successful fix is "Test and Replace Blower Motor Capacitor or Evaluate Furnace Sizing" (medium difficulty, ~60 minutes). Estimated DIY cost: $20-$40. HomeMD has 2 community-ranked fixes for this error.

Is error code SHORT CYCLE on a Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace 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 R801T 80% AFUE Single-Stage Upflow Gas Furnace error SHORT CYCLE myself?

Yes — the top-ranked community fix ("Test and Replace Blower Motor Capacitor or Evaluate Furnace Sizing") is rated medium difficulty and takes about 60 minutes. Tools needed: Multimeter with capacitance setting, Insulated screwdriver, Needle-nose pliers.

How much does it cost to repair Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace error SHORT CYCLE?

DIY cost: $20-$40. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace have?

The Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace has 8 other known error codes, including: 1 FLASH (Normal — Heat Call Active), 10 FLASH (Rollout Switch Open), 2 FLASH (System Lockout — Ignition Failed), 3 FLASH (Pressure Switch Stuck Closed), 4 FLASH (Pressure Switch Stuck Open), and 3 more.

Which other Rheem models have the SHORT CYCLE error?

Error code SHORT CYCLE also appears on 1 other Rheem model: Rheem R96V 96% AFUE Two-Stage Variable Speed Upflow Gas Furnace. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace have?

The Rheem Rheem R801T 80% AFUE Single-Stage Upflow Gas Furnace has 8 other known error codes:

1 FLASH — Normal — Heat Call Active (2 fixes)
10 FLASH — Rollout Switch Open (2 fixes)
2 FLASH — System Lockout — Ignition Failed (2 fixes)
3 FLASH — Pressure Switch Stuck Closed (2 fixes)
4 FLASH — Pressure Switch Stuck Open (2 fixes)
5 FLASH — Flame Sensed Without Gas Valve Command (2 fixes)
6 FLASH — Power Reversed or No Ground (2 fixes)
7 FLASH — Low Flame Signal (2 fixes)

Which other Rheem models have the SHORT CYCLE error?

Error code SHORT CYCLE also appears on 1 other Rheem model:

Rheem R96V 96% AFUE Two-Stage Variable Speed Upflow Gas Furnace (furnace) · 2 fixes

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