Tag: boilers

All the articles with the tag "boilers".

• Burnham Boiler Err 4 (Flame Current Low) and Err 6 (Flame Without Call) — Flame Sensing Diagnosis

  27 May, 2026

  Burnham Err 4 means flame current is below the minimum threshold. Err 6 means the control board detects flame when there should be none. Complete diagnosis and fix guide for both codes.