Service manual

ESIE03–01

iv Table of Contents

2 Overview of the cooling mode functions

2.1 What Is in This Chapter? ......................................................................... 2–27

2.2 Dry Keep Mode........................................................................................ 2–28

2.3 Freeze-Up Function................................................................................. 2–29

2.4 Outdoor Fan Starting Control in Cooling or Dry Keep Mode.................... 2–33

2.5 Normal Outdoor Fan Control in Cooling Operation.................................. 2–35

2.6 High Pressure Protection Control in Cooling Operation........................... 2–37

2.7 Condensation Avoidance Control ............................................................ 2–38

3 Overview of the heating mode functions

3.1 What Is in This Chapter? ......................................................................... 2–39

3.2 Defrost Control......................................................................................... 2–40

3.3 Draft Avoidance Control 1........................................................................ 2–43

3.4 Draft Avoidance Control 2........................................................................ 2–45

3.5 4-way Valve Control................................................................................. 2–46

3.6 Starting Outdoor Fan Control in Heating Mode ....................................... 2–47

3.7 Normal Outdoor Fan Control in Heating Mode ........................................ 2–49

Part 3

Troubleshooting

1 Troubleshooting

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

1.2 Overview of General Problems................................................................ 3–4

1.3 Emergency Operation and Checking with the Wired Remote Controller. 3–6

1.4 Procedure of Self-Diagnosis by Remote Controller................................. 3–7

1.5 Checking with the Wireless Remote Controller Display........................... 3–8

1.6 Self-Diagnosis by Wired Remote Controller ............................................ 3–12

1.7 Remote Controller Display Malfunction Code and Contens..................... 3–13

1.8 Troubleshooting with the Indoor Unit LEDs and the Remote Controller.. 3–15

1.9 Troubleshooting with the Remote Controller: Outdoor Malfunctions ....... 3–16

1.10 Troubleshooting with the Remote Controller: System Malfunctions ........ 3–17

1.11 Overview of the Indoor Safety Devices.................................................... 3–18

1.12 Overview of the Outdoor Safety Devices................................................. 3–19

1.13 Outdoor Safety Device: Thermal Protector Fan Motor............................. 3–20

1.14 Outdoor Safety Device: Reverse Phase Protector................................... 3–21

1.15 Outdoor Safety Device: High-Pressure Switch ........................................ 3–22

1.16 Outdoor Safety Device: Low-Pressure Switch......................................... 3–23