Tag: waterfurnace

All the articles with the tag "waterfurnace".

• WaterFurnace Series 7 Geothermal Error Codes: Complete Guide

  Updated: 1 May, 2026

  WaterFurnace Series 7 geothermal heat pump error codes and fault diagnostics. IntelliZone2 fault codes, causes, and technician-level fixes.

• WaterFurnace Geothermal Fault Code 1 — Low Pressure Lockout

  22 Apr, 2026

  WaterFurnace geothermal heat pump Fault Code 1 means low refrigerant pressure lockout. Learn the causes, diagnostic steps, and how to fix this geothermal fault.