❄️Air Conditioner

York · DERA-F036N07 14 SEER

York DERA-F036N07 14 SEER EF Error Fix: Indoor Unit PCB Failure

This error indicates a failure in the indoor unit's main printed circuit board (PCB). It can cause erratic operation or complete system shutdown.

critical2 fixes available✨ Free fix available

Quick Answer

Error EF on the York DERA-F036N07 14 SEER means: Indoor Unit PCB Failure. The top-ranked community fix is “Replace indoor unit PCB” (hard difficulty, ~120 min, DIY cost: $180-$220). 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.

Root Cause Analysis

Control Board FailurePrimary

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: $350-$500.

Other York Models with Error EF

YZF42B21S LX Series AC

air_conditioner · 2 fixes

Other York DERA-F036N07 14 SEER Error Codes

High Pressure Switch Trip

2 fixes

Low Pressure Switch Trip

2 fixes

Compressor Overload

2 fixes

Indoor Fan Motor Locked

2 fixes

Outdoor Fan Motor Failure

2 fixes

Evaporator Coil Freeze

2 fixes

Thermistor Open Circuit

2 fixes

Communication Error Between Indoor and Outdoor Units

2 fixes

People Also Ask About York DERA-F036N07 14 SEER Error EF

What does error code EF mean on a York DERA-F036N07 14 SEER?

Error code EF on the York DERA-F036N07 14 SEER means: Indoor Unit PCB Failure. This error indicates a failure in the indoor unit's main printed circuit board (PCB). It can cause erratic operation or complete system shutdown.

How do I fix error code EF on my York DERA-F036N07 14 SEER?

The most successful fix is "Replace indoor unit PCB" (hard difficulty, ~120 minutes). Estimated DIY cost: $180-$220. HomeMD has 2 community-ranked fixes for this error.

Is error code EF on a York DERA-F036N07 14 SEER serious?

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

Can I fix York DERA-F036N07 14 SEER error EF myself?

Yes — the top-ranked community fix ("Replace indoor unit PCB") is rated hard difficulty and takes about 120 minutes. Tools needed: Phillips screwdriver, Multimeter.

How much does it cost to repair York DERA-F036N07 14 SEER error EF?

DIY cost: $180-$220. Professional repair typically costs $350-$500. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the York DERA-F036N07 14 SEER have?

The York DERA-F036N07 14 SEER has 8 other known error codes, including: E1 (High Pressure Switch Trip), E2 (Low Pressure Switch Trip), E3 (Compressor Overload), E4 (Indoor Fan Motor Locked), E5 (Outdoor Fan Motor Failure), and 3 more.

Which other York models have the EF error?

Error code EF also appears on 1 other York model: YZF42B21S LX Series AC. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the York DERA-F036N07 14 SEER have?

The York DERA-F036N07 14 SEER has 8 other known error codes:

E1 — High Pressure Switch Trip (2 fixes)
E2 — Low Pressure Switch Trip (2 fixes)
E3 — Compressor Overload (2 fixes)
E4 — Indoor Fan Motor Locked (2 fixes)
E5 — Outdoor Fan Motor Failure (2 fixes)
E6 — Evaporator Coil Freeze (2 fixes)
E7 — Thermistor Open Circuit (2 fixes)
E8 — Communication Error Between Indoor and Outdoor Units (2 fixes)

Which other York models have the EF error?

Error code EF also appears on 1 other York model:

YZF42B21S LX Series AC (air conditioner) · 2 fixes

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