🌡️Heat Pump

COIL-ICE

Daikin · DZ20VC0361 20 SEER HP

Daikin DZ20VC0361 20 SEER HP COIL-ICE Error Fix: Excessive Outdoor Coil Icing

Excessive outdoor coil icing in heating mode — ice buildup on the outdoor heat exchanger exceeds normal defrost capability, caused by low refrigerant, airflow restrictions, or defrost system failure

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error COIL-ICE on the Daikin DZ20VC0361 20 SEER HP means: Excessive Outdoor Coil Icing. The top-ranked community fix is “Diagnose Refrigerant Levels and Defrost System Components” (hard difficulty, ~90 min, DIY cost: $0). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · heat pump

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 heat pump 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 Daikin Models with Error COIL-ICE

DZ14SA0301 2.5 Ton 14 SEER Single-Stage Heat Pump

heat_pump · 2 fixes

DZ16SA0361 3 Ton 16 SEER Single-Stage Heat Pump

heat_pump · 2 fixes

DZ17VSS036 3 Ton 17 SEER2 Daikin Fit Side-Discharge Heat Pump

heat_pump · 2 fixes

Other Daikin DZ20VC0361 20 SEER HP Error Codes

Capacitor Failure

Compressor Failure

Compressor Overheating

Contactor Failure

Defrost Cycle Not Initiating

Dirty Condenser Coil

Condensate Drain Clogged

2 fixes

FAN-MOTOR

Outdoor Fan Motor Failure

2 fixes

People Also Ask About Daikin DZ20VC0361 20 SEER HP Error COIL-ICE

What does error code COIL-ICE mean on a Daikin DZ20VC0361 20 SEER HP?

Error code COIL-ICE on the Daikin DZ20VC0361 20 SEER HP means: Excessive Outdoor Coil Icing. Excessive outdoor coil icing in heating mode — ice buildup on the outdoor heat exchanger exceeds normal defrost capability, caused by low refrigerant, airflow restrictions, or defrost system failure

How do I fix error code COIL-ICE on my Daikin DZ20VC0361 20 SEER HP?

The most successful fix is "Diagnose Refrigerant Levels and Defrost System Components" (hard difficulty, ~90 minutes). This fix costs nothing. HomeMD has 2 community-ranked fixes for this error.

Is error code COIL-ICE on a Daikin DZ20VC0361 20 SEER HP serious?

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Can I fix Daikin DZ20VC0361 20 SEER HP error COIL-ICE myself?

Yes — the top-ranked community fix ("Diagnose Refrigerant Levels and Defrost System Components") is rated hard difficulty and takes about 90 minutes. Tools needed: T20 Torx screwdriver, Refrigerant manifold gauge set, Multimeter, Leak detector.

How much does it cost to repair Daikin DZ20VC0361 20 SEER HP error COIL-ICE?

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 Daikin DZ20VC0361 20 SEER HP have?

The Daikin DZ20VC0361 20 SEER HP has 8 other known error codes, including: CAP-FAIL (Capacitor Failure), COMP-FAIL (Compressor Failure), COMP-OVERHEAT (Compressor Overheating), CONTACTOR (Contactor Failure), DEFROST-FAIL (Defrost Cycle Not Initiating), and 3 more.

Which other Daikin models have the COIL-ICE error?

Error code COIL-ICE also appears on 3 other Daikin models: DZ14SA0301 2.5 Ton 14 SEER Single-Stage Heat Pump, DZ16SA0361 3 Ton 16 SEER Single-Stage Heat Pump, DZ17VSS036 3 Ton 17 SEER2 Daikin Fit Side-Discharge Heat Pump. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Daikin DZ20VC0361 20 SEER HP have?

The Daikin DZ20VC0361 20 SEER HP has 8 other known error codes:

CAP-FAIL — Capacitor Failure (2 fixes)
COMP-FAIL — Compressor Failure (2 fixes)
COMP-OVERHEAT — Compressor Overheating (2 fixes)
CONTACTOR — Contactor Failure (2 fixes)
DEFROST-FAIL — Defrost Cycle Not Initiating (2 fixes)
DIRTY-COND — Dirty Condenser Coil (2 fixes)
DRAIN-CLOG — Condensate Drain Clogged (2 fixes)
FAN-MOTOR — Outdoor Fan Motor Failure (2 fixes)

Which other Daikin models have the COIL-ICE error?

Error code COIL-ICE also appears on 3 other Daikin models:

DZ14SA0301 2.5 Ton 14 SEER Single-Stage Heat Pump (heat pump) · 2 fixes
DZ16SA0361 3 Ton 16 SEER Single-Stage Heat Pump (heat pump) · 2 fixes
DZ17VSS036 3 Ton 17 SEER2 Daikin Fit Side-Discharge Heat Pump (heat pump) · 2 fixes

Ad Space — banner

Replace ADSENSE_PUBLISHER_ID in AdUnit.tsx