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Johnson Controls
Air Conditioner
HVWHP072B32S
Page 229
Johnson Controls HVWHP072B32S - Page 229
300 pages
Manual
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(Main Parts)
MAINTENANCE
SM-18006
4-79
●
Arrangement of Inverter Power Unit
(H,Y)VWH(P
,R)144B42S, (H,Y)VWH(P
,R)168B42S,
(H,Y)VWH(P
,R)192B42S and (H,Y)VWH(P
,R)216B42S Only
Inverter PCB (INV1)
Inverter PCB (INV2)
Radiation Plate 1
Radiation Plate 2
228
230
Table of Contents
Main Page
- -
11
Table of Contents
11
Installation
15
Water Source Unit
16
Change-Over Box
17
Single Branch Type: COBS048B22S, COBS096B22S
17
Multiple Branch Type: COB04M132B22S,COB08M264B22S, COB12M264B22S
17
Single Branch Type (for Chicago): COBS048B22C, COBS096B22C
17
Optional Parts (Piping Kit)
18
Multi-Kit (Line Branch) for Heat Recovery System (3-Pipes Connection): MW-NP142X3, MW-NP282X3, MW-NP452X3, MW-NP562X3, MW-NP902X3
18
Multi-Kit (Line Branch) for Heat Pump System and Heat Recovery System (2-Pipes Connection)
18
(2-Pipes Connection): MW-NP282A3, MW-NP452A3, MW-NP692A3, MW-NP902A3
18
Multi-Kit (Header Branch) for Heat Recovery System (3-Pipes Connection): MH-NP288X
18
Multi-Kit (Header Branch) for Heat Pump System and Heat Recovery System (2-Pipes Connection)
18
(2-Pipes Connection): MH-NP224A, MH-NP288A
18
Operation
19
Troubleshooting
21
Initial Troubleshooting
22
Checking Electrical Wiring and Power Supply
22
Location of Printed Circuit Boards (Pcbs)
26
Checking Rotary Switch and DIP Switch Settings
30
Checking Wired Controller
33
Checking Using 7-Segment Display
40
Checking Alarm Code History
47
Troubleshooting
48
Abnormality of Power Supply Phase
51
Activation of Protection Device
51
Decrease in Discharge Gas Superheat
51
Water Source Unit PCB
51
Water Source Units
51
Checking Using Service Checker
55
Emergency Operation
59
Alarm Code Table
62
Troubleshooting Procedures
62
Troubleshooting Using Alarm Codes
63
Increase in Discharge Gas Temperature at the Top of Compressor D1-15
79
Abnormality of High Pressure Sensor
97
Abnormality of Thermistor for Water Source Unit Heat Exchanger Gas Pipe (Tg)
100
Abnormality of Low Pressure Sensor
101
Incorrect Connection of Change-Over Box
104
Incorrect Indoor Unit No. Setting
106
Abnormality of Picking up Circuit for Protection in Water Source Unit
107
Abnormalities of Devices
132
Procedures for Checking
136
Self-Checking of Pcbs Using Wired Controller
136
Self-Checking of Wired Controller
136
Test Run
137
Test Run for Water Piping
138
Test Run Using Wired Controller (CIW01)
139
Test Run from Water Source Unit Side
141
Checking the Test Run
143
Checklist for Refrigerant System
144
Reset for Accumulated Operation Time of Compressor 1-2 (Cu1 - Cu2 ) ( : Water Source Unit No.)
147
Setting of Forced Open Valve Mode
148
Maintenance
151
Maintenance of Water Source Unit
152
Removing Service Cover and Front Cover
152
Attaching Service Cover and Front Cover
153
Removing Upper Cover
154
Removing Rear Cover
155
Removing Pipe Cover
156
Removing Side Cover
157
Removing Electrical Box Cover
159
Removing Electrical Box
160
Removing Radiation Plate from Inverter PCB
160
Removing Wiring and Disconnect Connectors
161
Removing Electrical Box
163
Removing Compressor
164
Replacing Plate Heat Exchanger
173
Replacing Refrigerant Oil
175
Replacing Refrigerant Oil (no Clogging in Oil Return Pipe Assy)
175
Replacing Refrigerant Oil (Clogging in Oil Return Pipe Assy) and Replacing Oil Return Pipe Assy
177
Removing Expansion Valve and Solenoid Valve Coils
180
Removing Expansion Valve Coil (MV1,MV3,MV4, MVB)
181
Removing Solenoid Valve Body (SVA, SVB, SVC, SVG)
183
Removing Solenoid Valve Coil (SVA, SVB, SVC, SVG)
183
Removing Reversing Valve Coil (RVR1, RVR2)
185
Removing Reversing Valve Body (RVR1, RVR2)
186
Removing Stop Valve
188
Removing High Pressure Switch, High Pressure Sensor, Low Pressure Sensor and Thermistors
189
Removing High Pressure Sensor (Pd) and Low Pressure Sensor (Ps)
191
Removing High Pressure Switch (PSH1 and PSH2)
191
Removing Thermistor for Refrigerant Piping (Te, Tg, Tchg, Tsc)
192
Removing Thermistor for Entering Water Temperature (Ta)
193
Removing Thermistor for Upper Side of Compressor (Discharge Gas) Temperature (Td1 and Td2)
194
Removing Thermistor for Electrical Box Temperature (Ts)
195
Removing Control PCB and Electrical Components Inside Electrical Box
196
Removing Other Electrical Components
196
Removing Inverter PCB
209
Removing Electrical Box
210
Removing Cooling Fan
212
Removing Components for Change-Over Box
214
Removing Service Cover for Electrical Box and Electronic Expansion Valve
214
Removing Electrical Components
216
Removing Electric Expansion Valve Coil
219
Inverter for 208/230V Type
221
Inverter for 460V Type
228
Printed Circuit Board
235
Scroll Compressor
236
Cooling Fan
242
Thermistor
243
Electronic Expansion Valve
246
Pressure Sensor
249
High Pressure Protection Device
250
Electrical Coil Parts
251
Noise Filter (NF1, NF2)
252
Reactor (DCL1, DCL2)
254
Transformer (TF) for 460V Type
256
Change-Over Box
257
External Input/Output and Function Setting
259
DIP Switch Settings of Water Source Unit
260
External Input/Output and Function Setting Mode for Water Source Unit
261
External Input and Output Settings
262
Function Setting
272
Function Setting Item
272
Description of Function Setting Item
275
Power Saving Functions from Wired Controller
280
Power Saving Guide
280
Water Source Unit Capacity Control
280
Intermittent Control Function
281
Rotation Control Function
281
Operation Noise Reduction Schedule Function
282
Power Consumption Display Function
282
Power Saving Schedule Function
282
Field Work Instructions
283
Caution for Refrigerant Leakage
284
Maintenance Work for Water Circuit
284
Modifications of Charging Refrigerants Other than those Specified by Johnson Controls
285
Maintenance Work for Cycle Operation
286
Service and Maintenance Record by 7-Segment Display
287
Service and Maintenance Record by Wired Controller
291
Service and Maintenance Record
293
Saturation Curve for Refrigerant
294
Mollier Chart for R410A
295
Service Parts List
297
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