Daikin EWYQ180DAYN [401/524] Part 3 troubleshooting

ESIE06-05

Part 3 – Troubleshooting 3–1

Part 3

Troubleshooting

Introduction When a problem occurs, all possible faults have to be checked. This chapter gives a general idea of

where to look for faults. Furthermore the general procedures for refrigeration circuit repair and for

electrical circuit repair are explained.

Remark Not all repair procedures are described. Some procedures are considered common practice.

What is in this part? This part contains the following chapters:

Chapter See page

1–Overview of Fault Indications and Safeties 3–3

2–Checking the Temperature Sensors 3–25

3–Reset procedure 3–31

4–Procedure for Software Upload 3–33

5–Procedure for main PCB changing 3–43

6–Procedure for extension PCB changing 3–47

7–Procedure for controller changing 3–49

8–Procedure for EEV PCB changing 3–51

9–Procedure for compressor replacement : Suction washer 3–53

10–Procedure for Compressor Oil Fill or Oil Drain 3–55

11–Compressor electrical connections and wiring 3–57

12–Procedure to Clear the Refrigerant Circuit in Case of Frozen Evaporators 3–59