Daikin EWLP040KAW1N [4/138] Part 4 commissioning and test run

ESIE03-03

Table of Contents iii

2 Malfunction Indications and Safeties Overview

2.1 What Is in This Chapter? ........................................................................ 3–5

2.2 Malfunction Indications Overview ........................................................... 3–6

2.3 Safeties Overview................................................................................... 3–8

3 Checking the Inputs and Outputs

3.1 What Is in This Chapter? ........................................................................ 3–11

3.2 Checking the Temperature Sensors....................................................... 3–12

3.3 Controller Sensors: R3T, R4T and R5T.................................................. 3–13

3.4 Checking the Digital Inputs and Outputs................................................. 3–14

3.5 Checking the Power Supply and Fuses.................................................. 3–15

4 Troubleshooting

4.1 What Is in This Chapter? ........................................................................ 3–17

4.2 Items to Be Checked............................................................................... 3–18

4.3 General Repair Procedures.................................................................... 3–20

4.4 Unlocking the Keyboard.......................................................................... 3–21

4.5 Replacing the Controller ......................................................................... 3–22

4.6 Replacing the PCB: EUW(L)5-24KZW1.................................................. 3–27

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 Water Pressure Drop: EUW5-12KZW1................................................... 4–8

1.5 Water Pressure Drop: EUW16-24KZW1................................................. 4–9

1.6 Water Pressure Drop: EUWL5-24KZW1................................................. 4–10

1.7 Setting of the Flow Switch....................................................................... 4–12

1.8 Electrical Checks .................................................................................... 4–14