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UTOPIA RAS-4HVRP2E
Hitachi UTOPIA RAS-4HVRP2E User Manual
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–
SERVICE
MANUAL
–
UTOPIA
R32 SERIES
R410A SERIES
SMGB0136 rev.0 - 07/2021
MODELS
RAS-3HVRC2
RAS-(4-6)H(V)RC2E - RAS-(4-6)H(V)RP2E
RAS-(4-6)H(V)NC2E - RAS-(4-6)H(V)NP2E
2
Table of Contents
Table of Contents
5
Introduction
14
Applied Symbols
15
Norms and Regulations
15
Product Guide
16
Classification of Outdoor Unit Models
16
Classification of Indoor Unit Models
16
Product Line-Up: Outdoor Units
17
Outdoor Unit Accessory Code List
18
Product Line-Up: Indoor Units
19
Product Line-Up: KPI Energy Recovery Unit
23
Product Line-Up: DX-Interface
23
Product Line-Up: Econofresh
23
Multi-Kits
24
Individual Remote Controls
24
Receiver Kit for Combination with Wireless Remote Control Switch
25
Centralised Remote Controls
26
Building Air Conditioning Controls
26
Control Support Devices
27
Gateways for Building Management Systems (BMS)
27
Control Accessories
28
Optional Parts and Installation for RAS-3HVRC2
30
Air Flow Guide AG-264
30
Wind Guard WSP-264
31
Snow Protection Hood
32
Air Discharge Hood
32
Rear Suction Hood
33
Left Suction Hood
34
Assembly of Snow Protection Hood
35
Optional Parts and Installation RAS-(4-6)H(V)(R/N)(C/P)2E
36
Air Flow Guide AG-335A
36
Wind Guard WSP-335A
37
Snow Protection Hood
38
Air Discharge Hood
38
Rear Suction Hood
39
Left Suction Hood
40
Assembly of Snow Protection Hood
41
Piping Work and Refrigerant Charge
43
General Notes before Performing Pipe Work
44
Piping Materials
44
Three Principles on Refrigerant Piping Work
46
Suspension of Refrigerant Piping
46
Brazing Work
47
Piping Connection for Outdoor Unit
48
Ras-3Hvrc2
48
Ras-(4-6)H(V)(R/N)(C/P)2E
49
Outdoor Unit Stop Valve
52
Piping System for Header Branch
54
Refrigerant Piping Length
54
Refrigerant Piping Range
54
Maximum Lenght of Refrigerant Piping
55
Combinations of Piping Size and Piping Length
56
Refrigerant Piping Size and Multikit/Distributor
56
System Installation
58
Refrigerant Charge
61
Caution of the Pressure by Check Joint
62
Refrigerant Charge Quantity
62
Refrigerant Charge before Shipment (W (Kg))
63
Calculation Method for the Additional Refrigerant Charge
63
Caution in Case of Refrigerant Leakage
65
Maximum Permitted Concentration of Hydrofluorocarbon (HFC)
65
Calculation of Refrigerant Concentration
65
Countermeasure for R410A Refrigerant Leakage
66
Drain Piping
67
Drain Discharging Boss
67
Electrical and Control Settings
69
Led's Indication
70
General Check
70
General Notes
70
Electrical Wiring Connection for the Outdoor Unit
71
Electrical Settings
72
Outdoor and Indoor Unit Electrical Wiring
72
Wire Size
73
Electrical Wiring Diagrams
75
Ras-3Hvrc2
75
RAS-(4-6)HV(R/N)(C/P)2E (1~ 230V 50Hz)
77
RAS-(4-6)HV(R/N)(C/P)2E (3N~ 400V 50Hz)
79
Control System
81
Device Control System
82
Ras-3Hvrc2
82
Ras-(4-6)H(V)(R/N)(C/P)2E
83
Outline of the Control System
84
Outdoor Units Printed Circuit Board (PCB)
86
Ras-3Hvrc2
86
Ras-(4-6)H(V)(R/N)(P/C)2E
87
Ras-(4-6)Hv(R/N)(C/P)2E (Pcb1)
87
Ras-(4-6)H(R/N)(C/P)2E (Pcb)
88
Protection Control
89
Protection Control Code on 7-Segment Display
89
Activating Condition of Protection Control Code
90
Control and Safety Devices
95
Standard Operation Sequence RAS-3HVRC2 and RAS-(4-6)H(V)(R/N)(C/P)2E
96
Cooling Operation
96
Dry Operation
98
Heating Operation
100
Defrost Operation RAS-3HVRC2
102
Defrost Operation RAS-(4-6)H(V)(R/N)(C/P)2E
103
Freezing Protection During Cooling Process or Dry Operation
105
Standard Control Functions
105
Prevention Control for Excessively High Discharge Gas Temperature
106
Optional Functions
107
External Input and Output Setting
108
Function Setting
108
Check Mode
108
Menu Mode Accessing (by 7-Segment Display)
108
Ras-3Hvrc2
108
External Input and Output Setting (by 7-Segment Display)
109
Available Control Functions
109
Setting of External Input and Output
110
Optional External Output Signals
110
Available Ports
111
Available Output Signals
112
Function Setting (by 7-Segment Display)
112
Sequence of the Function Setting
112
Function Setting
114
Circulator Function at Heating Thermo
117
Circulator Function at Heating Thermo-OFF (FA)
117
Night-Shift (Low Noise)(Ni)
117
Cancellation of the Outdoor Ambient Temperature Limit (GS)
118
Change of Defrost Condition (Jo)
119
Change the Opening Degree of the Expansion Valve (Si)
120
Priority Capacity Mode Setting (Nu)
120
Priority Cooling Capacity Mode (Hc)
120
Priority Heating Capacity Mode (Hh)
120
Slo Defrost Setting (Bj)
120
Change of Heating Thermo-OFF Opening Degree of the Expansion Valve (So)
121
Heating Start Opening Degree Change (CI)
121
Low Noise Setting (Db)
121
Demand Function Setting (De)
122
Cold Draft Protection (Fb)
123
Forced Stop When Defrosting Is Restored (Ds)
123
Wave Function Setting (UE)
123
Alternate Defrost Mode (F5)
124
Defrost
124
Intermittent Operation of Outdoor Fan (F1)
124
Cancellation of Defrost at Absence Judgement (F9)
125
Change Forced Stoppage Status (FE)
125
Check Mode
126
External Input and Output Setting
126
Function Setting
126
Menu Mode Accessing (by 7-Segment Display)
126
Ras-(4-6)H(V)(R/N)(C/P)2E
126
Available Control Functions
127
External Input and Output Setting (by 7-Segment Display)
127
Setting of External Input and Output
128
External Input Function Setting
129
External Output Function Setting
131
Function Setting (by 7-Segment Display)
132
Sequence of the Function Setting
132
Demand Function Setting
133
Indoor Expansion Valve Opening
133
Indoor Expansion Valve Operating
133
Low Noise Setting
133
Protection of Decrease in Outlet
133
Slo (Fan Speed)Defrost Setting
133
Temperature for Cooling
133
Function Setting
134
Circulator Function at Heating Thermo
137
Circulator Function at Heating Thermo-OFF (FA)
137
Night-Shift (Low Noise)
137
Night-Shift (Low Noise)(Ni)
137
Cancellation of Outdoor Ambient Temperature Limit
138
Cancellation of the Outdoor Ambient Temperature Limit (GS)
138
Defrost for Cold Area
139
Defrost for Cold Area (Jo)
139
Priority Capacity Mode Setting (Nu)
139
Slo Defrost Setting (Bj)
139
Demand Function Setting
140
Demand Function Setting (De)
140
Low Noise Setting (Db)
140
Cold Draft Protection
141
Cold Draft Protection (Fb)
141
Outlet Temperature (DOAS)
141
Wave Function Setting
141
Wave Function Setting (UE)
141
Outdoor Unit Capacity Control
142
Power Saving Function from Wired Controller
142
Power Saving Guide
142
Intermittent Control Function
143
Rotation Control Function
143
Operation Noise Reduction Schedule Function
144
Power Consumption Display Function
144
Power Saving Schedule Function
144
Commissioning
145
Preliminary Checks
146
Before the Test Run
147
Test Run Using the PC-ARFP1E Remote Control Switch (Example)
148
Test Run from the Outdoor Unit
150
Checking at Test Run
152
Refrigerant Cycle Checklist
153
Test Run Check List
156
Electrical Checks of Main Parts
157
Inverter
158
Ras-(4-6)Hv(R/N)(C/P)2E
158
Ras-(4-6)H(R/N)(C/P)2E
160
Specifications of Inverter
162
Inverter Time Chart
164
Protective Function
164
Overload Control
166
Thermistor
167
Thermistors for RAS-3HVRC2
167
Thermistors for RAS-(4-6)H(V)(R/N)(C/P)2E
168
Electronic Expansion Valve
171
High Pressure Protection Device
172
Ras-(4-6)H(V)(R/N)(C/P)2E
172
Ras-3Hvrc2
172
Noise Filter (NF)
173
Ras-(4-6)H(R/N)(C/P)2E
174
Ras-(4-6)Hv(R/N)(C/P)2E
174
Ras-3Hvrc2
174
Reactor (DCL)
174
Rotary Compressor
175
Servicing
177
Safety Introduction
178
Ras-3Hvrc2
179
Removing the
179
Removing the Pipe Cover
179
Removing the Outdoor Fan
180
Removing the Compressor
181
Removing the 4-Way Valve Coil
183
Removing the High Pressure Switch and Pressure Switch for Control
183
Removing the Electrical Box
184
Removing the Electronic Expansion Valve Coil
184
Removing Display PCB
185
Removing Other Electrical Components
185
Ras-(4-6)H(V)(R/N)(C/P)2E
186
Remove Outlet Grille
186
Removing Service Cover
186
Removing Upper Cover
186
Removing Bottom Service Cover and Rear Cover
187
Removing Outdoor Fan Motor
187
Removing Electrical Box
188
Removing the Compressor
191
Removing the High Pressure Switch and Pressure Switch for Control
195
Removing 4-Way Valve Coil
197
Removing Electronic Expansion Valve Coil
197
Removing 4-Way Valve
198
Removing Solenoid Valve Coil (SVA)
198
Removing Electronic Expansion Valve
199
Removing Solenoid Valve
200
Disassembly / Assembly the Electrical Components for RAS-(4-6)HV(R/N)(C/P)2E
201
Disassembly / Assembly Electrical Components for RAS-(4-6)H(R/N)(C/P)2E
206
Removing Pipe Thermistors
211
Troubleshooting
213
Initial Troubleshooting
215
Power Supply Failure to the Indoor Unit and the Remote Control Switch (PC-ARFP1E)
215
Ras-3Hvrc2
215
Simple Checking Procedure by Means of the 7-Segment Display
215
Abnormal Operation of the Devices
216
Checking the Electrical Wires and the Power Source
219
Ras-(4-6)H(V)(R/N)(C/P)2E
219
Checking by 7-Segment Display
220
Failure of the Power Supply to Indoor Units and the Remote Control Switch
223
Abnormal Transmission between Remote Control Switch and Indoor Unit
224
Abnormal Operation of the Devices
225
Alarm Codes for the Outdoor Units
236
Ras-3Hvrc2
236
Troubleshooting Procedure
236
Troubleshooting by Alarm Code
238
Alarm Codes of Wired Controller
262
Ras-(4-6)H(V)(R/N)(C/P)2E
262
Troubleshooting by Alarm Code
265
Check Mode Display by Unit Controller
298
Ras-3Hvrc2
298
Troubleshooting in Check Mode
298
Troubleshooting Using the 7 Segment Display (Outdoor Unit)
298
Ras-(4-6)H(V)(R/N)(C/P)2E
303
Troubleshooting by Using the 7-Segment Display
303
Checking Procedure for Main Parts
310
Checking Procedure for the PCB
310
Ras-3Hvrc2
310
Checking Procedeure for the DC Fan Motor
311
Checking Procedure for the Electronic Expansion Valve for Indoor and Outdoor Units
312
Checking Procedure for Other Parts
313
Checking Procedure for the Inverter PCB
315
Checking Procedure for the Compressor
316
Location of Print Circuit Boards (Pcbs)
318
Purpose
318
RSW, Dsws and Leds Functions RAS-(4-6)HV(R/N)(C/P)2E
318
Location of Print Circuit Boards (Pcbs)
321
Purpose
321
RSW, Dsws and Leds Functions RAS-(4-6)H(R/N)(C/P)2E
321
Maintenance Notes
325
Checking the Power Source and the Wiring Connection
326
General Notes
326
Insufficient Cooling Performance When a Long Piping Is Applied
326
Abnormally High Operation Sound (in the Ceiling Type Indoor Unit)
327
Alarm Code "31
327
Not Cooling Well Due to Insufficient Installation Space for the Outdoor Unit
327
Maintenance Work
328
Service and Maintenance Record
329
Service and Maintenance Record Using the 7-Segment Display
330
Information of Cause Code of Alarm
332
Information of Cause Code of Alarm Record
332
Information of Indoor Unit
332
Ras-3Hvrc2
333
Service and Maintenance Table through the Remote Control Switch
333
Ras-(4-6)(V)(R/N)(C/P)2E
335
Refrigerant Collection Method
336
Refrigerant Collection Method When Replacing the Parts of Outdoor Unit
336
Refrigerant Collection Method When Replacing Indoor Unit
338
4
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Hitachi UTOPIA RAS-4HVRP2E Specifications
General
Brand
Hitachi
Model
UTOPIA RAS-4HVRP2E
Category
Air Conditioner
Language
English
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