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Altherma HT
Daikin Altherma HT Service Manual
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ESIE09-08B
Service Manual
Daikin ALTHERMA HT
ERSQ 011/014/016 AA V1, Y1
ERRQ 011/014/016 AA V1, Y1
EKHBRD 011/014/016
AA/AB/AC/AD V1, Y1
R-410A, R-134a
EKHTS(U) 200/260 A, AB, AC
EKBUHAA6 V3, W1
2
Table of Contents
Default Chapter
3
Table of Contents
3
Introduction
8
Safety Cautions
8
Preface
12
Part 1 - General Information
13
Model Names of Indoor/Outdoor Units & Tanks
14
Part 2 - Specifications
16
Specifications
17
Part 3 - Refrigerant Circuit & Functional Parts
19
Refrigerant Circuit
20
Outdoor Unit
20
Indoor Unit
22
Functional Parts Layout
26
Errq 011/014/016 Aav1, Ersq 011/014/016 Aav1
26
Errq 011/014/016 Aay1, Ersq 011/014/016 Aay1
28
Ekhbrd 011/014/016 Aa(V1/Y1)
30
Ekhbrd 011/014/016 Ab/Ac(V1/Y1)
32
Ekhbrd 011/014/016 Ac/Ad(V1/Y1)
33
Ekhts 200/260 A/Ab/Ac
34
Ekhtsu 200/260 A/Ab/Ac
36
Part 4 - Electrical Circuit
39
Switch Box Layout - Indoor Unit EKHBRD
40
PCB Layout for EKHBRD 011/014/016 AA/AB/AC/AD V1/Y1
44
Main PCB - A1P
44
Control - PCB - A3P
46
Inverter PCB - A4P
48
Filter PCB - A6P
50
Qa Pcb - A5P
52
Inverter Control PCB - Three Phase - A4P
53
Inverter PCB - Three Phase - A5P
54
Digital I/O PCB (Option PCB A7P)
55
Demand PCB (Option PCB A8P)
56
Part 5 - Function
57
Operation Mode
58
Basic Control
59
Normal Operation
59
Compressor PI Control
60
Electronic Expansion Valve PI Control R-410A Circuit
61
Electronic Expansion Valve PI Control R-134A Circuit
61
Special Control
62
Startup Control
62
Defrosting Operation
63
Pump-Down Residual Operation
64
Stopping Operation
65
Protection Control
66
High Pressure Protection Control
66
Low Pressure Protection Control
68
Discharge Pipe Protection Control
70
Inverter Protection Control
71
Other Control
73
Heating Operation Prohibition
73
Inverter Fan Control (Switch Box Fan)
73
Crankcase Heater
73
Outline of Control (Indoor Unit)
74
Freeze Prevention
74
Simultaneous Demand of Space Heating and Domestic Water Heating
75
Part 6 - Test Operation
81
Test Operation
82
Procedure and Outline
82
Air Tight Test and Vacuum Drying
84
Additional Refrigerant Charge
85
Operation When Power Is Turned on
89
Outdoor Unit PC Board Layout
90
Field Setting
91
Field Setting from Remote Control
91
Field Setting from Outdoor Unit
118
Part 7 - Troubleshooting
129
Symptom-Based Troubleshooting
131
Troubleshooting by Remote Control
133
The INSPECTION / TEST Button
133
Self-Diagnosis by Wired Remote Control
134
Operation of the Remote Controller's Inspection / Test Operation Button
135
Remote Control Service Mode
136
Remote Controller Self-Diagnosis Function
138
Troubleshooting by Indication on the Remote Controller
144
A1" Indoor Unit: PC Board Defect
144
A6" Indoor Unit: Pump Error (M1P) or Other Water System Error
145
A9 " Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (K1E) R-410A Circuit
146
AE" Indoor Unit: Water Circuit Error
148
AJ" Indoor Unit: Malfunction of Capacity Determination Device
149
C1" Indoor Unit: Failure of Transmission (between Indoor Unit PC Board and Control PC Board)
150
C4" Indoor Unit: Malfunction of Thermistor (R3T) Liquid Thermistor R-410A
152
C5" Indoor Unit: Malfunction of Tank Thermistor (R2T)
153
C9" Indoor Unit: Return Water Thermistor (R4T)
154
CA" Indoor Unit: Leaving Water Thermistor Error (R5T)
155
CJ" Indoor Unit: Malfunction of Thermostat Sensor in Remote Controller
156
Controller
156
E1" Outdoor Unit: PC Board Defect
157
E1" Indoor Unit: PC Board Defect
158
E3" Outdoor Unit: Actuation of High Pressure Switch
159
E3" Indoor Unit: Actuation of High Pressure Switch
161
E4" Outdoor Unit: Actuation of Low Pressure Sensor
164
E4" Indoor Unit: Actuation of Low Pressure Sensor
166
E5" Outdoor Unit: Inverter Compressor Motor Lock
168
E5" Indoor Unit: Inverter Compressor Motor Lock
169
E7" Malfunction of Outdoor Unit Fan Motor
170
E9 " Outdoor Unit: Malfunction of Moving Part of Electronic Expansion Valve
172
E9 " Indoor Unit: Malfunction of Moving Part of Electronic Expansion Valve (K2E) R-134A Circuit
174
F3" Outdoor Unit: Abnormal Discharge Pipe Temperature
176
F3" Indoor Unit: Abnormal Discharge Pipe Temperature
177
H9" Outdoor Unit: Malfunction of Thermistor (R1T) for Outdoor Air
178
J3" Outdoor Unit: Malfunction of Discharge Pipe Thermistor (R2T)
179
J3" Indoor Unit: Malfunction of Discharge Pipe Thermistor (R6T)
180
J5" Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction Pipe 1, 2
181
J5" Outdoor Unit: Malfunction of Thermistor (R3T, R5T) for Suction
181
Pipe 1, 2
181
J5" Indoor Unit: Malfunction of Thermistor (R7T) for Liquid R-134A
182
J6" Outdoor Unit: Malfunction of Thermistor (R6T) for Outdoor Unit
183
Heat Exchanger
183
J6" Outdoor Unit: Malfunction of Thermistor (R6T) for Outdoor Unit Heat Exchanger
183
J7 " Outdoor Unit: Malfunction of Thermistor (R7T) for Outdoor Unit Liquid Pipe
184
J9 " Outdoor Unit: Malfunction of Thermistor (R4T) for Subcooling Heat Exchanger Gas Pipe
185
JA" Outdoor Unit: Malfunction of High Pressure Sensor
186
JA" Indoor Unit: Malfunction of High Pressure Sensor
187
JC" Outdoor Unit: Malfunction of Low Pressure Sensor
188
JC" Indoor Unit: Malfunction of Low Pressure Sensor
189
L1" Outdoor Unit: Malfunction of PC Board
190
L1" Indoor Unit: Malfunction of PC Board
191
L4 " Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise
192
L4 " Indoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise (R8T)
193
L5" Outdoor Unit: Inverter Compressor Abnormal - R-410A
194
L5" Indoor Unit: Inverter Compressor Abnormal - R-134A
195
L8" Outdoor Unit: Inverter Current Abnormal
196
L8" Indoor Unit: Inverter Current Abnormal
197
L9" Outdoor Unit: Inverter Start up Error
198
L9" Indoor Unit: Inverter Start up Error
199
LC" Outdoor Unit: Malfunction of Transmission between Inverter and Control PC Board
200
LC" Indoor Unit: Malfunction of Transmission between Inverter and Control PC Board
201
LH" Indoor Unit: Converter Error
202
P1" Outdoor Unit: High Voltage of Capacitor in Main Inverter Circuit
203
P1" Indoor Unit: High Voltage of Capacitor in Main Inverter Circuit
204
PJ" Indoor Unit: Faulty Combination of PCB
205
U0 " Low Pressure Drop Due to Refrigerant Shortage or Electronic Expansion Valve Failure
206
U2" Power Supply Insufficient or Instantaneous Failure
208
U2" Power Supply Insufficient or Instantaneous Failure
210
U4 " Malfunction of Transmission between Indoor Unit and Outdoor Unit
212
U4" Malfunction of Transmission Indoor Unit
214
U5" Malfunction of Transmission between Remote Control and Indoor Unit
215
U5" Malfunction of Transmission between Remote Control and Indoor Unit
215
U7" Indoor Unit: Malfunction of Transmission Outdoor Unit
216
U8 " Malfunction of Transmission between Main and Sub Remote Controls
217
UA" Communication Error between Outdoor Unit and Indoor Unit
218
UF" System Is Not Set yet
219
UH" Malfunction of System, Refrigerant System Address Undefined
220
Part 8 - Appendix
225
Specifications
226
ESP Curves
226
Piping Diagrams
228
Outdoor Unit
228
Indoor Unit
230
Outdoor Unit
233
Wiring Diagrams
234
Outdoor Unit
234
Field Wiring Connection Diagram
237
Field Wiring Connection Diagram
238
Indoor Unit
239
Indoor Unit
243
Thermistor Resistance / Temperature Characteristics
251
Pressure Sensor
254
Method of Replacing the Inverter's Power Transistors Modules
255
External Backup Heater Kit
258
Model Name
258
Main Components
259
Technical Specifications
261
Detailed Explanation of Setting Modes
262
External Backup Heater Control
263
Troubleshooting by Indication on the Remote Controller
265
Troubleshooting: General Symptoms
266
Switch Box Layout
267
Wiring Diagrams
269
Way Valve
273
Build-Up of 3-Way Valve
273
Troubleshooting Overview 3-Way Valve
274
How to Verify if 3-Way Valve Is Installed Correctly
275
Part 9 - Precautions for New Refrigerant (R-410A)
278
Precautions for New Refrigerant (R-410A)
279
Outline
279
Refrigerant Cylinders
281
Service Tools
282
Index
289
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Daikin Altherma HT Specifications
General
Brand
Daikin
Model
Altherma HT
Category
Heat Pump
Language
English
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