Service manual

ESIE03–01 General Functionality

Part 2 – Functional Description 2–3

Part 2

1 General Functionality

1.1 What Is in This Chapter?

Introduction This chapter contains information on the functions used to control the system. Understanding these

functions is vital when diagnosing a malfunction that is related to the functional control.

Overview This chapter contains the following topics:

Topic See page

1.2–Functions of Thermistors 2–4

1.3–Operating Modes and Control Modes 2–6

1.4–Forced Operating Mode (Emergency Operation) 2–7

1.5–Outdoor Unit Identification Function 2–10

1.6–Thermostat Control 2–11

1.7–Forced Thermostat OFF 2–13

1.8–HPS and LPS Function 2–14

1.9–Simulated Operation Function 2–15

1.10–Discharge Pipe Temperature Control 2–16

1.11–Gas Shortage Function 2–17

1.12–Drain Pump Control 2–18

1.13–Fan and Flap Operations 2–20

1.14–Auto-Restart Function 2–21

1.15–Using Conditions for Remote Controller Thermostat 2–22

1.16–Overcurrent Protection Function 2–23

1.17–Expansion Valve Control 2–24