HTP Boiler: Flame drops out while running (F10)
Flame drops out while running (F10) on a HTP boiler: Flame lost three times on one call.
Applies to: EL-80, EL-110, EL-150, EL-220, EL-299, EL-399 (N/LP)
Common causes of flame drops out while running (f10)
- Gas pressure sag
- Dirty or worn flame probes
- Burner gasket leak
How to fix flame drops out while running (f10): step by step
- Watch inlet gas pressure under load
- Check FLAME signal in status menu (over 1.0 microamp, steady 5 to 9 after 1 min)
- Clean the rectifier and spark probe; replace both if still weak
- Check burner door gaskets
If the unit shows an error code, look it up: HTP Boiler codes
Models
EL-80 LPEL-80 NEL-110 LPEL-110 NEL-150 LPEL-150 NEL-220 LPEL-220 NEL-299 LPEL-299 NEL-399 LPEL-399 N
Source: Elite EL-80 N Installation Manual (LP-293), p. 71, p. 72. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.