What It Means
Stack / Flue Temperature Fault
Likely Causes
- Blocked or restricted flue exhaust
- Recirculating combustion gases (wind, enclosure)
- Insufficient combustion air
- Dirty burner tray
Next Checks
- Clear any obstruction from flue outlet
- Verify minimum clearances to walls and roof (per install guide)
- Inspect burner tray for debris and carbon buildup
- Ensure combustion air supply — sealed rooms require dedicated air vent
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 Jandy / Zodiac 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.