SplashLens / Hayward / H-Series Gas Heater

Hayward E01: Ignition Failure

Hayward E01 reference for H-Series Gas Heater: likely causes, next checks, and manual-verification reminders for pool service techs.

Hayward H-Series Gas Heater HIGH Certified tech recommended

What It Means

Ignition Failure

Likely Causes

Next Checks

  1. Check gas shutoff is open
  2. Check gas pressure at manifold (should be 3.5" WC natural gas, 10" LP)
  3. Clean flame sensor rod with fine steel wool
  4. Inspect igniter gap (should be 1/8")
  5. Check for error E01 after holding reset — 3 strikes = lockout

Verify Before Repair

SplashLens is a field reference, not a repair guarantee. Confirm the visible code, exact model, and current manufacturer procedure before replacing parts, bypassing safeties, or quoting a customer.

SplashLens is independent and is not affiliated with Hayward or other equipment manufacturers.

Use SplashLens At The Pad

Manual error-code lookup works after the app has loaded once. AI scan features require internet and should be treated as a second set of eyes.