Daikin ERQ User Manual

ESIE09-05
ii Table of Contents
6.2 Freeze Prevention..................................................................................40
6.3 Hot Start Control (In Heating Operation Only)........................................41
Part 6 Control Box EKEQ - CBV3.................................................. 43
1. Different Systems with their Control Boxes...........................................44
1.1 System A: PAIR......................................................................................44
1.2 System B: MULTI ...................................................................................46
2. X, Y, Z Control.......................................................................................49
2.1 X-Control ................................................................................................49
2.2 Y-Control ................................................................................................50
2.3 Z-Control ................................................................................................51
3. Wiring Diagram of Control Box..............................................................52
3.1 D-box......................................................................................................52
3.2 F-box ......................................................................................................53
4. Attention Points .....................................................................................54
5. System A: EKEQF & EKEQD-box: Installation and Operation Manual.55
6. System B: EKEQM-box: Installation and Operation Manual .................70
Part 7 Test Operation................................................................... 83
1. Test Operation ......................................................................................84
1.1 Procedure and Outline ...........................................................................84
1.2 Operation when Power is Turned On .....................................................90
2. Outdoor Unit PC Board Layout .............................................................91
3. Field Setting ..........................................................................................92
3.1 Field Setting from Remote Controller .....................................................92
3.2 Field Setting from Outdoor Unit............................................................100
Part 8 Installation and Operation Manual.................................. 117
Part 9 Troubleshooting............................................................... 149
1. Symptom-based Troubleshooting .......................................................151
2. Troubleshooting by Remote Controller ...............................................154
2.1 The INSPECTION / TEST Button.........................................................154
2.2 Self-diagnosis by Wired Remote Controller .........................................155
2.3 Remote Controller Service Mode .........................................................156
2.4 Remote Controller Self-Diagnosis Function .........................................158
3. Troubleshooting by Indication on the Remote Controller ....................165
3.1 “A0” AHU: Error of External Protection Device.....................................165
3.2 “A1” AHU: PC Board Defect .................................................................166
3.3 “A6” AHU: Fan Motor (M1F) Lock, Overload........................................167
3.4 Abnormal Power Supply Voltage..........................................................168
3.5 “A9” AHU: Malfunction of Moving Part of Electronic Expansion Valve
(Y1E) ....................................................................................................169
3.6 “AJ” AHU: Malfunction of Capacity Determination Device ...................171
3.7 “C1” AHU: Failure of Transmission (Between AHU PC Board and Fan PC
Board)...................................................................................................172
3.8 “C4” AHU: Malfunction of Thermistor (R2T) for Heat Exchanger .........174
3.9 “C5” AHU: Malfunction of Thermistor (R3T) for Gas Pipes ..................175
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Daikin ERQ Specifications

General

Brand	Daikin
Model	ERQ
Category	Heat Pump
Language	English