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7E878648
Hitachi 7E878648 Manuals
Manuals and User Guides for Hitachi 7E878648. We have
1
Hitachi 7E878648 manual available for free PDF download: Service Manual
Hitachi 7E878648 Service Manual (478 pages)
Brand:
Hitachi
| Category:
Air Conditioner
| Size: 25 MB
Table of Contents
Table of Contents
13
Units Installation
15
Transportation of Outdoor Unit
15
Rci
16
Factory-Supplied Accessories
16
Initial Check
16
Air Panel Installation
18
Factory-Supplied Accessories
20
Initial Check
20
Installation
20
Rcim-Fsn
20
Factory-Supplied Accessories
24
Initial Check
24
Installation
24
Rcd
24
Installation
25
Air Panels Installation
26
Rpc
28
Factory-Supplied Accessories
28
Initial Check
28
Installation
28
RPI (In-The-Ceiling)
30
Factory-Supplied Accessories
30
Initial Check
30
Installation
31
Connecting the Supply Air Duct
31
Fix Flexible Duct to External Faces of Flanges
31
Air Suction Direction Change
32
Rpk
33
Factory-Supplied Accessories
33
Initial Check
33
Installation
34
Dimensions of the Mounting Bracket
36
RPF (Floor Type) / RPFI (Floor-Concealed Type)
37
Factory-Supplied Accessories
37
Initial Check
37
Installation
37
Ras 2~6H(V)Rne / Ras-2.5~5Hn(V)E
39
Installation Space
39
Installation Place Provision
40
Remove Shipping Washer
41
Ras 8~12 Hrne
41
Installation Location
41
Serial Units Installation
42
Multiple Installation Space
43
Foundation Provision
45
Center of Gravity
45
Optional Accessories
46
Fresh Air Intake for 4-Way Cassette Indoor Units (OACI-232) or (PD-75)
46
T-Tube Connecting Kit for 4-Way Cassette Indoor Units (TKCI-232)
47
Branch Discharge for 4-Way Cassette Indoor Units (PDF-23C3; PDF-46C3)
47
Direction Air Flow for 4-Way Cassette Type Indoor Units
48
Filter Box for 4-Way Cassette Type Indoor Units (B-23H4)
48
Anti-Bacterial Long Life Air Filter for 4-Way Cassette Type Indoor Units (F-23L4-K)
49
Deodorant Air Filter for 4-Way Cassette Type Indoor Units (F-23L4-D and F-46L4-D)
49
Drain Piping
51
General
52
Indoor Units
53
Rci
53
Rcim
53
Rcd
54
Rpc
54
Rpi
55
Rpk
56
RPF and RPFI
57
Drain Discharging Boss for Outdoor Unit (DBS-26)
57
Drain Discharging Boss
57
Electrical Wiring
60
General Check
60
Electrical Wiring for RAS-2~6H(V)RNE
60
Setting the DIP Switches for RAS-2~6H(V)RNE
61
Electrical Wiring for RAS-2.5~5HN(V)E
62
Electrical Wiring Connection for RAS-2.5~5HN(V)E
62
Setting the DIP Switches for RAS-2~5HN(V)E
62
Electrical Wiring for RAS-8~12HRNE
63
Electrical Wiring Connection for RAS-8~12HRNE
63
Setting the DIP Switches for RAS-8~12HRNE
64
Electrical Wiring for the Indooor Unit
65
Electrical Wiring Connection
66
RPF\RPFI Units
70
Setting the DIP Switches for the Indoor Unit
70
Common Wiring
73
Electrical Wiring between the Indoor Unit and the Outdoor Unit
73
H-LINK System
77
Specifications
77
Psc-5Hr
78
Installation of the Optional Remote Control Switch
83
Installation of the Remote Control Switch <PC-P1HE
83
Before the Installation
83
Installation Area
83
Installation Procedure
84
Electrical Wiring
85
Installation of the Remote Control Switch (Core-Function) <PC-P5H
86
Before the Installation
86
Installation Area
86
Installation Procedures
86
Electrical Wiring
87
Installation of the Central Station <PSC-5S
89
Accessories
89
Installation Area
89
Installation Procedure
89
Electrical Wiring
90
Input/Output Function
94
Option Setting
96
Initialization of the Central Station
97
Installation of the 7-Day Timer <PSC-5T
98
Accessories
98
Installation Area
98
Installation Procedure
98
Electrical Wiring
100
Setting the Dip Switches
101
Installation of the Receiver Kit <PC-RLH8
102
Installation of the Wireless Receiver Kit
104
Installation of the Receiver Kit <PC-RLH9
104
Installation of the External Receiver Kit <PC-RLH11
105
Installation of the Wireless Receiver Kit
106
Installation of the Receiver Kit <PC-RLH13
106
Harc-Bx(A/B)
108
Part Names
108
Installation Procedure
108
Electrical Wiring
109
Arrangement of the Installation of PCB and H-LINK Terminals
109
Test Run
110
Maintenance and Service
110
CS-Net Interface (HARC40) Connection
111
Control System
114
Device Control System
114
V)Rne
114
V)Ne
115
12Hrne
116
Indoor Unit PCB
118
Layout of the Printed Circuit Board for RCI
118
Layout of the Printed Circuit Board for RCD
119
Layout of the Printed Circuit Board for RPI 1.5~6.0, RPC, RPF(I)
120
Layout of the Printed Circuit Board for RPI 8/10
121
Layout of the Printed Circuit Board for RPK FSNM
122
Layout of the Printed Circuit Board (Only RPK-1.5FSN1M)
123
Outdoor Units PCB
124
Ras-(2~6)H(V)Rne
124
Ras-(8~12)Hrne
125
Ras-(2.5~5)Hn(V)E
126
Protection and Safety Control
127
Safety and Control Device Setting
127
Standard Operation Sequence
129
Cooling Process
129
Dry Operation
135
Heating Process
141
Defrost Operation Control
147
Standard Control Function
150
Freezing Protection Control During the Cooling Process or Dry Operation
150
Over Heating Protection Control of the Outlet Temperature
151
Control for Automatic Cooling and Heating Process
152
Control of Expansion Valve for the Plate Heat Exchanger
153
Indoor Unit Electrical Expansion Valve Control
154
Outdoor Unit Electrical Expansion Valve Control
154
Compressor Operation Control
155
Activation for Protection Device Control
156
Outdoor Fan Control During Heating Operation
158
Outdoor Fan Control During Cooling Operation
160
Preheating Control of Compressor
161
Prevention Control for High Pressure Increase
162
Prevention Control for High Pressure Increase at Cooling
162
Prevention Control for High Pressure Increase at Heating
162
Control for Existing Pipe
162
Available Optional Functions
164
Indoor Unit (Except RPK)
164
Input Setting and Output Setting of the Connector of the Indoor Unit PCB
164
On/Off Function of the Remote Control
166
Cancellation of the Commands from the Remote Control Switch after the Enforced Stoppage
167
Setting the Cooling Mode or the Heating Mode
167
Control by Means of a Field-Supplied Room Thermostat ( / )
168
Control by Means of a Remote Temperature Sensor
168
Picking up the Signals
169
Indoor Unit (RPK Only)
170
Remote On/Off Operation ( / )
170
Cancellation of the Commands from the Remote Control Switch after the Enforced Stoppage ( )
172
Remote Cooling / Heating Mode Changeover ()
172
Automatic Operation When Power Supply Is on ()
173
Restart Function after the Power Failure ()
173
Control by Means of the Field-Supplied Room Thermostat ()
173
Picking up the Signals
173
Outdoor Units RAS-2.5~5HN(V)E
174
Release Ambient Temperature Limit
174
Defrosting Condition Changeover
174
Demand Thermo off
175
Defrost Indoor Unit Fan Speed
175
Outdoor Units RAS-2.5~6H(V)RNE
176
Demand
176
Release Ambient Temperature Limit
176
Defrosting Condition Changeover
177
Night Shift (Low Sound) Operation
177
Energy Saving Operation
177
Slow Defrost Setting
177
R407C Piping
178
Outdoor Units RAS-8~12HRNE
179
Input Setting and Output Setting of the Outdoor Unit Connector
179
Fixing the Operation Mode (Heating / Cooling )
180
Demand ( )
181
Snow Sensor ()
181
Enforced Stoppage ()
181
Demand Current Control (///)
181
Available Optional Functions by Pressure Switches
182
Indoor Fan Control During Thermo off at Heating
183
Night Shift (Low Noise)
183
Cancellation of Outdoor Temperature Limit of Heating
183
Cancellation of Outdoor Temperature Limit of Cooling
184
Change of Defrost Operation Conditions
184
Slow Defrost Setting
184
Cancellation of Outdoor Hot-Start Limit
184
Long Piping Setting
184
Low Noise Setting
184
Fixing the Demand Function
185
Picking up Signals from Outdoor Unit Printed Circuit Board
185
Optional Functions Available through Remote Control Switch
186
Optional Functions Setting
186
Optional Functions of Remote Control Switch
190
Optional Functions Available through the Remote Control Switch (PC-P5H)
192
Optional Functions Available through Wireless Remote Control Switch
193
Test Run
196
Checking Procedure before the Test Run
196
Test Run Procedure by Means of the Remote Control Switch
197
Test Run Procedure by Means of the Wireless Remote Control (PC-LH3A)
198
Test Run Procedure from the Outdoor Unit Side
200
Check List
203
V)Rne
203
Ras-2.5~5Hne
204
Test Run and Maintenance Record
205
Troubleshooting
208
Initial Troubleshooting
208
Checking by Means of the 7-Segment Display
208
Emergency Operation When the Inverter Compressor Is Damaged
209
Failure of the Power Supply to the Indoor Unit and the Remote Control Switch
210
Abnormal Transmission between the Remote Control Switch and the Indoor Unit
211
Abnormal Operation of the Devices
212
Troubleshooting Procedure
220
Alarm Code Table
220
Troubleshooting by Alarm Code
223
Troubleshooting in Check Mode
275
Troubleshooting by Means of the 7-Segment Display
281
Running Current of the Compressor
290
Protection Control Code on the 7-Segment Display
291
Activating Condition of the Protection Control Code
293
Procedure for Checking each Main Part
295
Self-Checking Procedure of PCB by Means of the Remote Control Switch
295
Self-Checking Procedure of the Remote Control Switch
297
Self-Checking Procedure of the Indoor Unit PCB (Only for RPK)
299
Procedure for Checking Other Main Parts
300
Servicing
338
Outdoor Unit RAS-2~6H(V)RNE
338
Removing Service Cover
338
Removing Air Outlet Grille
338
Removing Outdoor Fan
338
Removing Outdoor Fan Motor
339
Removing the Compressor
339
Removing High Pressure Switch and Pressure Switch for Control
342
Removing Coil for Reversing Valve
343
Removing Coil for Expansion Valve
344
Removing PCB1
344
Removing ISPM
345
Removing Electrical Components
347
Outdoor Unit RAS-8/10/12HRNE
348
Removing the Air Inlet Grille
348
Removing the Front Service Panel
349
Removing the Fan Guard Nets
349
Removing the Outdoor Fan
350
Position for Attaching the AC Motor
351
Removing the Compressor
351
Removing the High Pressure Switch, the High Pressure Sensor and the Low Pressure Sensor
356
Removing the High Pressure Switch (Detailed Procedure)
356
Removing the High Pressure Sensor and the Low Pressure Sensor (Detailed Procedure)
357
Removing the 4-Way Valve Coil
357
Removing the Solenoid Valve Coil
358
Removing the Expansion Valve Coil
359
Removing the Thermistor for the Liquid Pipe
360
Removing the Outdoor Thermistor
361
Removing the 4- Way Valve
363
Removing the Stop Valve
364
Removing the Electrical Box
365
Removing the PCB (Electrical Box for Control)
366
Removing Other Electrical Components (Electrical Box for Control)
366
Removing the Noise Filter
367
Removing the ISPM
368
Removing the Fan Controller
368
Outdoor Unit RAS-2.5~5HN(V)E
369
Removing Service Cover
369
Removing Air Outlet Grille
369
Removing Outdoor Fan
369
Removing Outdoor Fan Motor
370
Removing the Compressor
370
Removing High Pressure Switch and Pressure Switch for Control
373
Removing Coil for Reversing Valve
374
Removing Coil for Expansion Valve
375
Removing PCB
375
Rci
376
Removing the Long Life Filter
376
Removing the Air Intake Grille
376
Removing the Electrical Box Cover
376
Removing the Optional Air Panel
377
Removing the Fan Runner and Fan Motor
377
Removing the Bell-Mouth
378
Removing the Printed Circuit Board (PCB)
378
Removing the Drain Pan
379
Removing the Drain-Up Mechanism
379
Removing the Float Switch
379
Removing the Thermistor for Liquid Pipe and Gas Pipe
380
Removing the Electronic Expansion Valve Coil
380
Removing the Automatic Louver Motor
381
Rcim - Fsn
382
Removing the Air Filter
382
Removing the Air Intake Grille
382
Removing the Electrical Box Cover
382
Removing the Optional Air Panel
383
Removing the Fan Runner and Fan Motor
384
Removing the Bell-Mouth
384
Removing the Printed Circuit Board (PCB)
385
Removing the Drain Pan
385
Removing the Drain-Up Mechanism
386
Removing the Float Switch
387
Removing the Thermistor for Liquid Pipe and Gas Pipe
388
Removing the Automatic Louver Motor
390
Rcd
391
Removing the Long-Life Filter and the Air Inlet Grille
391
Removing the Electrical Box Panel
391
Removing the Optional Air Panel
391
Removing the Fan Runner and the Fan Motor
392
Removing the Printed Circuit Board (PCB)
393
Removing the Float Switch
394
Removing the Drain-Up Mechanism
394
Removing the Drain Pan
395
Removing the Thermistor for Liquid Pipe and Gas Pipe
396
Removing the Electronic Expansion Valve Coil
396
Removing the Automatic Louver Motor
397
Rpi
398
Removing the Air Inlet Thermistor
398
Removing the Thermistors for Liquid Pipe and Gas Pipe
398
Removing the Thermistor Outlet
398
Removing the Fan Unit
399
Removing the Drain Pump
399
Removing the Electrical Box
399
Removing the Float Switch
399
Removing the Inlet Air Thermistor
400
Removing the Liquid Thermistor
400
Removing the Outlet Air Thermistor
400
Removing the Fan Unit
400
Removing the Float Switch
401
Removing the PCB
401
Removing Other Electrical Box Components
402
Rpc
403
Removing the Air Filter
403
Removing the Side Panel
403
Removing the Discharge Air Grille
403
Removing the Fan Motor
404
Removing the Bearing
405
Removing the Coupling
405
Removing the Automatic Louver Motor
406
Removing the Thermistors for Liquid Pipe and Gas Pipe
406
Removing the Printed Circuit Board (PCB)
407
Rpk-1.5/2
407
Removing the Air Filter
407
Removing the Front Panel
408
Removing the Motor for the Automatic Louver
409
Removing the Thermistor for Liquid Pipe, Gas Pipe, Discharged Air and Suction Air
409
Removing the Electrical Box Panel
410
Removing the Drain Pan
411
Removing the Heat Exchanger
411
Removing the Fan Motor
412
Removing the Electronic Expansion Valve
413
Rpk-2.5~4.0
415
Removing the Right Side Cover
416
Removing the Thermistors for Liquid Pipe, Gas Pipe, Discharge Air and Suction Air
417
Removing the Drain Pan
418
Removing the Electrical Box Panel
419
Removing the Heat Exchanger
420
Removing the Fan and the Fan Motor
421
Removing the Suction Air Grille
422
Removing the Electronic Expansion Valve Coil
423
Servicing
423
Rpk 1.5Fsn1M
424
Removing the Air Filter
424
Removing Front Panel
425
Removing the Electrical Box Panel
426
Removing the Motor for the Automatic Louver
426
Removing the Thermistors for Liquid Pipe, Gas Pipe, Discharge Air and Suction Air
427
Removing the Drain Pan
428
Removing the Heat Exchanger
429
Removing the Fan and the Fan Motor
430
Removing the Electronic Expansion Valve Coil
431
Removing the Printed Circuit Board
432
Rpf
434
Removing the Air Inlet Grille
434
Removing the Air Filter
434
Removing the Discharge Air Grille
434
Removing the Front Panel
435
Removing the Fan Motor
435
Removing the Printed Circuit Board (PCB)
436
Removing the Thermistors for Liquid Pipe and Gas Pipe
437
Rpfi
437
Removing the Air Filter
437
Removing the Front Panel
437
Removing the Fan Motor
438
Removing the Printed Circuit Board (PCB)
438
Removing the Thermistors for Liquid Pipe and Gas Pipe
438
Cleaning the Indoor Heat Exchanger
439
Required Tools for Cleaning (for All Indoor Units)
439
Cleaning the 4-Way Cassette Indoor Unit
441
Cleaning the 2-Way Cassette Indoor Unit
444
Cleaning the Wall Type Indoor Unit
446
Cleaning the Floor Type Indoor Unit and the Floor Concealed Type Indoor Unit
446
Cleaning the Ceiling Type Indoor Unit
448
Main Parts
452
Inverter
452
Specification of Inverter (Single Phase)
452
Specifications of Inverter (Three Phase)
453
Inverter Time Chart
455
Protective Function
456
Thermistor
457
Resistance Value of the Thermistor
458
Electronic Expansion Valve
460
Electronic Expansion Valve for the Outdoor Unit
460
Electronic Expansion Valve for the Indoor Unit
461
Pressure Sensor
462
Auto Louver Mechanism
463
RCI / RCIM (4-Way Cassette Type)
463
RCD (2-Way Cassette Type)
464
RPC (Ceiling Type)
465
Scroll Compressor
466
Reliable Mechanism for Low Vibration and Low Sound
466
Principle of Compression
466
Field Work Instruction
468
Guideline for Selecting the Drain Pipe for the Indoor Unit
468
Caution with the Refrigerant Leakage
468
Maximum Permissible Concentration of the HCFC Gas
468
Calculation of the Refrigerant Concentration
468
Countermeasure for the Refrigerant Leakage According to the KHK Standard
469
Maintenance Work
469
Service and Maintenance Record
470
Service and Maintenance Record by Means of the 7-Segment Display
471
Pump-Down Method for Replacing the Compressor
472
Check Data Sheet of the Outdoor Units RAS-8~12HRNE
474
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