🏊Pool Heater

Jandy · LXi 400,000 BTU Low NOx Pool and Spa Heater

Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater CE Error Fix: Communication Error

Lost RS-485 communication with AquaLink controller — heater operates standalone but cannot be controlled remotely; check RS-485 wiring between heater and AquaLink panel, look for loose or corroded connections, verify polarity

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error CE on the Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater means: Communication Error. The top-ranked community fix is “Replace RS-485 Communication Module and Inspect Wiring Harness” (medium difficulty, ~60 min, DIY cost: $15-$30). 2 community-ranked fixes available below.

Published February 2026 · 2 fixes · pool heater

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 pool heater 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 Jandy Models with Error CE

ePump 2.7 THP Variable Speed Pool Pump with Digital Control

pool_pump · 2 fixes

JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control

pool_heater · 2 fixes

JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control

pool_heater · 2 fixes

VS FloPro 1.85 THP Variable Speed Pool Pump

pool_pump · 2 fixes

Other Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater Error Codes

AFC

Airflow Current Fault

Air/Gas Switch Fault

Flue Exhaust Fault

Flow Fault — Insufficient Water Flow

2 fixes

Gas Valve Fault

2 fixes

HLS

High Limit Switch Tripped

Ignition Failure

Polymer Header Crack (LXi-Specific)

2 fixes

People Also Ask About Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater Error CE

What does error code CE mean on a Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater?

Error code CE on the Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater means: Communication Error. Lost RS-485 communication with AquaLink controller — heater operates standalone but cannot be controlled remotely; check RS-485 wiring between heater and AquaLink panel, look for loose or corroded connections, verify polarity

How do I fix error code CE on my Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater?

The most successful fix is "Replace RS-485 Communication Module and Inspect Wiring Harness" (medium difficulty, ~60 minutes). Estimated DIY cost: $15-$30. HomeMD has 2 community-ranked fixes for this error.

Is error code CE on a Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater 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 Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater error CE myself?

Yes — the top-ranked community fix ("Replace RS-485 Communication Module and Inspect Wiring Harness") is rated medium difficulty and takes about 60 minutes. Tools needed: T15 Torx screwdriver, Multimeter, Electrical tape.

How much does it cost to repair Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater error CE?

DIY cost: $15-$30. Professional repair typically costs $150-$250. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater have?

The Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater has 8 other known error codes, including: AFC (Airflow Current Fault), AGS (Air/Gas Switch Fault), FE (Flue Exhaust Fault), FLO (Flow Fault — Insufficient Water Flow), GV (Gas Valve Fault), and 3 more.

Which other Jandy models have the CE error?

Error code CE also appears on 4 other Jandy models: ePump 2.7 THP Variable Speed Pool Pump with Digital Control, JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control, JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control, VS FloPro 1.85 THP Variable Speed Pool Pump. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater have?

The Jandy LXi 400,000 BTU Low NOx Pool and Spa Heater has 8 other known error codes:

AFC — Airflow Current Fault (2 fixes)
AGS — Air/Gas Switch Fault (2 fixes)
FE — Flue Exhaust Fault (2 fixes)
FLO — Flow Fault — Insufficient Water Flow (2 fixes)
GV — Gas Valve Fault (2 fixes)
HLS — High Limit Switch Tripped (2 fixes)
IGN — Ignition Failure (2 fixes)
MECH-01 — Polymer Header Crack (LXi-Specific) (2 fixes)

Which other Jandy models have the CE error?

Error code CE also appears on 4 other Jandy models:

ePump 2.7 THP Variable Speed Pool Pump with Digital Control (pool pump) · 2 fixes
JXi 260 260,000 BTU Pool Heater with High Efficiency and Digital Temperature Control (pool heater) · 2 fixes
JXi 400,000 BTU Pool and Spa Heater with Digital Temperature Control (pool heater) · 2 fixes
VS FloPro 1.85 THP Variable Speed Pool Pump (pool pump) · 2 fixes

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