Tag: limit-switch

All the articles with the tag "limit-switch".

• Lennox Error Code 441 — Limit Device Fault

  22 Apr, 2026

  Lennox error code 441 signals a limit device has opened during operation. This guide covers which limit tripped, why, and how to fix it without replacing parts unnecessarily.

• Lennox Error Code 412 — Limit Switch Fault Fix

  2 Apr, 2024

  Lennox error code 412 means the high limit switch has opened due to overheating. This guide covers diagnosis and fixes for the Lennox iComfort and SLP furnace limit fault.

• York 4 Flashes Error Code — Open Limit Device Fix

  31 Mar, 2024

  York 4 flashes means the high limit switch opened due to overheating. This guide covers every cause and fix for the York furnace 4-flash open limit fault.

• Rheem Furnace 4 Flashes — Open High Temperature Limit Fix

  29 Mar, 2024

  Rheem furnace 4 flashes means the high temperature limit switch has opened due to overheating. This guide covers every cause and fix for the Rheem/Ruud 4-flash fault.