Daikin EWYQ230DAYN [331/524] Functional control for a standalone unit

ESIE06-05 Functional Control for a Standalone Unit

Part 2 – Functional Description 2–105

Part 2

3 Functional Control for a Standalone Unit

3.1 What Is in This Chapter?

Introduction This chapter will give more detailed information about the functions used to control the system.

Understanding these functions is vital when diagnosing a malfunction, which is related to functional

control.

Overview This chapter contains the following topics:

Topic See page

3.2–Operation Flowchart 2–106

3.3–On/Off Management 2–107

3.4–Thermostat Control 2–108

3.5–Manual Control 2–114

3.6–Compressor Control 2–115

3.7–Fan Control 2–119

3.8–Pump Control 2–128

3.9–Floating Setpoint 2–129

3.10–Free Cooling 2–133

3.11–Superheat control 2–137

3.12–Changeable digital inputs 2–140

3.13–Changeable digital outputs 2–141

3.14–Changeable analogue inputs 2–142

3.15–Changeable analogue outputs 2–143

3.16–DICN Basic Setup (=master/slave system) 2–144

3.17–BMS Function 2–153

3.18–Freeze-up Control 2–157

3.19–Discharge gas safety 2–163

3.20–Password Function 2–164

3.21–History logging 2–165

3.22–Defrost management 2–166

3.23–Reversing valve 2–171

3.24–Low pressure bypass 2–172

3.25–Simulation 2–173