Daikin EUWAC5FZW [5/264] Troubleshooting

ESIE-0302

iv Table of Contents

4 Troubleshooting

4.1 What Is in This Chapter? ......................................................................... 3–29

4.2 Items to Be Checked ............................................................................... 3–30

4.3 General Repair Procedures ..................................................................... 3–32

4.4 Unlocking the Keyboard........................................................................... 3–33

4.5 Replacing the Controller: EUWAC5-10FZW1.......................................... 3–34

4.6 Replacing the Controller: EUWA*5-24KZW1........................................... 3–39

4.7 Replacing the Controller: EUWY*5-24KZW1........................................... 3–44

4.8 Replacing the PCB: EUWA*5-24KZW1 and EUWY*5-24KZW1.............. 3–50

Part 4

Commissioning and Test Run

1 Pre-Test Run Checks

1.1 What Is in This Chapter? ......................................................................... 4–3

1.2 General Checks ....................................................................................... 4–4

1.3 Water Piping Checks ............................................................................... 4–5

1.4 External Static Pressure: EUWAC5FZW1 ............................................... 4–8

1.5 External Static Pressure: EUWA*5-12KZW1 ........................................... 4–10

1.6 External Static Pressure: EUWA*16-24KZW1......................................... 4–12

1.7 External Static Pressure: EUWY*5-12KZW1 ........................................... 4–14

1.8 External Static Pressure: EUWY*16-24KZW1......................................... 4–16

1.9 Static Pressure of the Pump for EUWA*5-24KZW1 and

EUWY*5-24KZW1 ................................................................................... 4–18

1.10 Motor Pulley Setting: EUWAC8FZW1...................................................... 4–20

1.11 Motor Pulley Setting EUWAC10FZW1..................................................... 4–22

1.12 Water Pressure Drop through Evaporator: EUWAC5-8-10FZW1............ 4–24

1.13 Water Pressure Drop through Evaporator: EUWA*5-12KZW1................ 4–25

1.14 Water Pressure Drop through Evaporator: EUWA*16-24KZW1.............. 4–27

1.15 Water Pressure Drop through Evaporator: EUWY*5-12KZW1................ 4–29

1.16 Water Pressure Drop through Evaporator: EUWY*16-24KZW1.............. 4–31

1.17 Setting of the Flow Switch ....................................................................... 4–33

1.18 Air fan adjustment.................................................................................... 4–35

1.19 Electrical Checks ..................................................................................... 4–36

1.20 Control of the function of the 4-way valve for EUWY5-24KZW1.............. 4–37