2004 Daikin Water Chilling Unit Service Manual PDF (Si50-402)

Description

2004 Daikin Water Chilling Unit Service Manual (Si50-402) PDF DOWNLOAD

Description

This factory Service Manual is built for technicians servicing Daikin water chilling units in the medium/small class. It provides the practical information needed to install correctly, run test operations, configure field settings, verify operating values, and troubleshoot faults using symptom-based checks and malfunction code flowcharts.

✅ Applied Models (covered ranges)

Air Cooled Packaged H/P Chiller (R407C): UWYP125–750A
Air Cooled H/P Brine Chiller (R407C): UWYP630/750AZ
Air Cooled Packaged Chiller (R407C): UWAP75–750A
Air Cooled Brine Chiller (R407C): UWAP3–30AZ
Water Cooled Packaged Chiller (R407C): UWP90–900A
Water Cooled Brine Chiller (R407C): UWP3–30AZ
Water Cooled Packaged Chiller (R22): UWJ90–900D

🗂️ Table of Contents (Neatly Categorized)

A) Air-Cooled Chillers (Heat Pump / Cooling Only)

Includes models: UWYP125–750A / UWYP190–750AC / UWYP…AYE(Y3) / UWYP…AZ / UWAP… series

Key chapters include:

• List of models

• Product specifications

  • Standard specifications

  • Wiring diagrams

  • Piping diagrams

  • Operating values of functional parts

  • Operation limits & operation standards

  • Options list

• Installation

  • Carry-in procedure

  • Location selection + service space requirements

  • Water piping procedure

  • Electrical wiring (remote controller / centralized control connections)

• Test run

  • Checks before test run

  • Test run procedures (control panel / remote controller)

  • Daily check items

• Control panel / remote controller

  • Display meanings

  • Operation procedures

• Field settings

  • Dip switch / slide switch / pushbutton settings

  • Nighttime low-noise operation, forced pump/fan operation, pump interlock, auto restart, etc.

• Functions

  • Electric symbols & part names

  • Operation control logic (pump, thermostat conditions, restart protection)

  • Normal operation control (startup, temp control, EEV control, freeze-up protection, defrost control, etc.)

• Troubleshooting

  • Initial servicing checks

  • Checking method of operation data

  • Troubleshooting through symptoms

  • Troubleshooting by malfunction code (code list + flowchart)

• Miscellaneous

  • Differences from previous units

  • Main PCB board replacement procedure

B) Water-Cooled Chillers (Cooling Only)

Model families listed: UWP… (R407C) and UWJ… (R22)

C) Reference Section

• Thermistor temperature/resistance characteristics

• Pressure sensor voltage characteristics

• Pressure–temperature characteristics of R407C

• Technical information on brine

• Water quality control

• Noise and noise-prevention measures

• Measures for snow accumulation / strong winds

• Handling plate-type heat exchanger used for chilling units

📌 File Details

Stop guessing and service it like a pro—this Daikin factory service manual gives you the wiring/piping diagrams, settings, and troubleshooting logic you need to fix faults fast. Download instantly and get your chiller back online with confidence