Testing procedures
Outdoor communication fault — proven method to isolate PCB vs. connected components Objective A communication fault can be caused by: Signal wiring/te...
Tue, 17 Feb, 2026 at 4:48 PM
Quick Answer Test points: Terminal 2 (Neutral) to Terminal 3 (Signal) Expected indoor values (Terminal 2–3): AST & ART/C: 60–120 V ASTA &...
Wed, 18 Feb, 2026 at 7:07 AM
Wired Remote Signal Test (Y1/Y2/Y3) Quick Answer Y1 to Y3: 12 V DC, must be ≥ 11.4 V DC Pulse signal: 7–12 V DC (pulsing) What is it? A check of ...
Wed, 18 Feb, 2026 at 7:11 AM
DC Fan Motor Supply and Control Test (Power ON) Quick Answer Red to Black: 330–380 V DC White to Black: 15 V DC Key rule: Do not disconnect fan pl...
Wed, 18 Feb, 2026 at 7:40 AM
Overview This article outlines the approved method to reset the Admin or Installer password on Fujitsu General wired touch-panel remote controllers. Appli...
Wed, 18 Feb, 2026 at 8:38 AM