Daikin EUWAC5FZW [4/264] Part 3 troubleshooting

ESIE-0302

Table of Contents iii

2 The Digital Controller

2.1 What Is in This Chapter? ........................................................................ 2–31

2.2 The Digital Controller .............................................................................. 2–32

2.3 Start/Stop ................................................................................................ 2–34

2.4 What Happens in Case of an Alarm or a Warning .................................. 2–36

2.5 Settings: Direct and User Parameters .................................................... 2–37

2.6 Reading or Adjusting Parameter Settings: the Programming Procedure 2–39

Part 3

Troubleshooting

1 Inputs and Outputs Overview

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

1.2 Inputs and Outputs Overview: EUWAC5-10FZW1 ................................. 3–4

1.3 Inputs and Outputs Overview: EUWA*5-24KZW1 and

EUWY*5-24KZW1................................................................................... 3–5

1.4 Inputs/outputs overview of the I/O PCB: EUWA*5-24KZW1 and

EUWY*5-24KZW1................................................................................... 3–6

2 Malfunction Indications and Safeties Overview

2.1 What Is in This Chapter? ........................................................................ 3–9

2.2 Malfunction Indications Overview: EUWAC5-10FZW1 ........................... 3–10

2.3 Malfunction Indications Overview: EUWA*5-24KZW1 and

EUWY*5-24KZW1................................................................................... 3–12

2.4 Safeties Overview: EUWAC5-10FZW1................................................... 3–14

2.5 Safeties Overview: EUWA*5-24KZW1 and EUWY*5-24KZW1 .............. 3–15

3 Checking the Inputs and Outputs

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

3.2 Checking the Temperature Sensors ....................................................... 3–18

3.3 Controller Sensors: R3T and R4T for EUWAC*5-10FZW1..................... 3–19

3.4 I/O PCB sensors: R3T and R4T for EUWA*5-24KZW1 and

EUWY*5-24KZW1................................................................................... 3–20

3.5 I/O PCB sensors: R6T, R7T and R8T for EUWA*5-24KZW1 and

EUWY*5-24KZW1................................................................................... 3–21

3.6 Checking the Digital Inputs and Outputs................................................. 3–22

3.7 Checking the Power Supply and Fuses: EUWAC5-10FZW1.................. 3–23

3.8 Checking the Power Supply and Fuses: EUWA*5-24KZW1 and

EUWY*5-24KZW1................................................................................... 3–24

3.9 Electrical Error Overview: EUWA*5-24KZW1 and EUWY*5-24KZW1.... 3–25