Fujitsu WPYA100LA User Manual

AIR TO WATER HEAT PUMP
MONOBLOC type
CONTENTS
SPECIFICATION . . . . . . . . . .. . . . . . . . . . . . . . 2
FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
OPERATION DETAILS . . . . . . . . . . . . . . . . . . 5
TROBLESHOOTING GUIDE . . . . . . . . . . . . . 6
PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . .
14ELECTRIC CIRCUIT DIAGRAM . . . . . . . . .
15EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . .
16
DISASSEMBLY PROCESS . . . . . . . . . . .. . . 18
Models
Outdoor unit
WPYA100LA
WPYA080LA

Fujitsu WPYA100LA Specifications

General

Brand	Fujitsu
Model	WPYA100LA
Category	Heat Pump
Language	English

Summary

Functions

Inverter Control

Defrost Control

Anti-freezing Control

Operation Details

Defrosting Operation Details

Details conditions and timing for defrosting operation start and stop, with associated component states.

Troubleshooting Guide

Safety Warnings and Symbols

Provides critical safety warnings (Danger, Warning, Caution) and explains common safety symbols used in the manual.

Error Code Troubleshooting

Lists error codes, affected parts, and methods for checking and troubleshooting unit malfunctions.

Check Following Steps

Fuse Continuity and Voltage Checks

Guides on checking fuse continuity and measuring voltage for fan motor and pump components.

4-Way Valve and Component Resistance Checks

Details on checking the resistance of the 4-way valve, heater for tank, and circulation pump.

Wiring Diagram

Monitor Display Method

Electric Circuit Diagram

Disassembly Process

Service Panel Removal

Main PCB and Display PCB Removal

Instructions for safely removing the main PCB and the display PCB, including connectors and covers.

Top Panel and Reactor Removal

Module PCB and Solenoid Coil Removal

EEV Coil and Front Panel (Left) Removal

Fan Motor and Fan Bracket Removal

Compressor Removal and Precautions

Detailed procedure for compressor removal, including safety precautions and refrigerant handling.

Circulation Pump Removal

Tank Cover and Tank Heater Removal

Tank and Back Panel Removal

Heat Exchanger Removal

Detailed steps for removing the heat exchanger, including pipes, nuts, and terminal block panel.

Manometer and Pressure Relief Valve Removal

Air Purge Valve and Sensors Removal

Suction, Defrost, and Water Sensors Removal

Refrigerant Cycle Precautions

Key precautions for exchanging refrigerant cycle parts like expansion valve and 4-way valve during brazing.