HTP Boiler: Pump service mode to purge air
Pump service mode to purge air on a HTP boiler: Run each pump by hand to bleed the system.
Applies to: EL-80, EL-110, EL-150, EL-220, EL-299, EL-399 (N/LP)
How to fix pump service mode to purge air: step by step
- Disconnect the wires on the THERMOSTAT terminals
- Apply power
- Press the down arrow and ENTER together for 1 second: CH pump runs
- Press the up arrow: DHW pump; again: system pump (cascade master)
- Down and up together returns to normal
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. 50. 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.