Tag: lochinvar

All the articles with the tag "lochinvar".

• Lochinvar Knight E02 — High Limit / Stack Temp Fix

  21 May, 2026

  E02 on a Lochinvar Knight wall-hung (WHN, WBN) or Knight XL floor-mount condensing boiler indicates a high limit or stack temperature lockout. The SMART...

• Lochinvar Knight Boiler Error Messages — Complete Display Guide

  26 Apr, 2026

  Lochinvar Knight boiler display messages explained: Flame Fail Ign, Air Pressure SW, Fan Speed, Flow Switch LWCO, Fatal Error. Step-by-step diagnosis and fix guide.

• Lochinvar Boiler F08 Flame Failure Error — Causes and Fix

  26 Apr, 2026

  Lochinvar boiler F08 (Flame Failure) error code explained — causes, step-by-step diagnosis including flame sensor, igniter, and gas pressure checks, and fix guide.

• Lochinvar Boiler Error Code E03 — High Limit Tripped

  22 Apr, 2026

  Lochinvar E03 error means the high limit switch opened due to overtemperature. Learn why this happens on Knight and Crest boilers and how to fix it.

• Lochinvar Boiler Error Code E02 — Ignition Failure Fix

  15 Mar, 2024

  Lochinvar boiler error code E02 means ignition failure lockout on Knight, Crest, and SYNC series boilers — here's how to diagnose and fix it.