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Toshiba
Air Conditioner
HFCR407C
Page 156 (MM-A0280 Ht, Mma0280 Hx, MM-A0280 Ct, Mma0280 Cx, MM-A0224 Ht, Mma0224 Hx, MM-A0224 Ct, Mma0224 Cx)
Toshiba HFCR407C - MM-A0280 Ht, Mma0280 Hx, MM-A0280 Ct, Mma0280 Cx, MM-A0224 Ht, Mma0224 Hx, MM-A0224 Ct, Mma0224 Cx; Exploded Views and Service Parts
176 pages
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156
20
Exploded views and service part
s
Outdoor units
MM-A0280HT, MMA0280HX, MM-A0280CT, MMA0280CX,
MM-A0224HT, MMA0224HX, MM-A0224CT, MMA0224CX
155
157
Table of Contents
Main Page
Table of Contents
3
Precautions for R407C Outdoor Units
5
Introduction
5
Avoid Installation in the Following Locations:
5
Precautions
5
Precautions for R-407C Outdoor Units
6
Liquid Receiver Fusible Plug
6
System Pressure Measurement
6
Explanation of Toshiba Serial Number
6
Components
7
Outdoor Unit
7
Branching Joints/Headers
7
Operating Conditions
8
Outdoor Temperature
8
Room Temperature
8
Summary
8
Mode Priority
9
Range of Combined Units
9
Restriction for Combination Units
9
Model Name
9
Branching
10
Outline of MMS (Modular Multi System)
10
Indoor Units
12
Parts Specifications
12
Outdoor Units
13
Construction Views - Outdoor Units
21
Built-In Duct
22
Construction Views - Indoor Units
22
Built-In Slim Duct
23
Low Wall
24
Chassis
25
Ceiling
26
High Wall
27
2-Way Cassette
28
4-Way Cassette
29
Inverter Unit (10 HP, 8 HP)
31
Wiring Diagrams
31
Fixed-Speed Unit (10 HP, 8 HP)
32
Fixed-Speed Unit (6 HP)
33
Inverter Unit (10 HP, 8 HP) Cooling Only
34
Fixed-Speed Unit (10 HP, 8 HP) Cooling Only
35
Wiring Diagrams
36
Wall Unit
38
Inverter Unit (10 HP, 8 HP) Heat Pump
44
Model MM-A0280HT, MM-A0224HT
44
Refrigerant Piping Systematic Drawings
44
Model MM-A0280HX, MM-A0224HX
45
Model MM-A0160HX, MM-A0160CX
46
Fixed-Speed Unit (6 HP) Heat Pump
46
Model MM-A0280CT, MM-A0224CT
47
Model MM-A0280CX, MM-A0224CX
48
Normal Operation-Heat Pump System
49
Cooling Mode
49
Combined Refrigerant Piping Systematic Drawings
49
Emergency Operation When Inverter Unit Has Failed
50
Heat Pump System (Master Unit Back-Up Operation: Cooling Mode)
50
Heat Pump System (Cooling Mode)
51
Combined Refrigerant Piping Systematic Drawings
52
Recovery of Refrigerant in Failed Outdoor Unit
52
Heat Pump System (Normal Outdoor Unit Refrigerant Recovery)
52
Refrigeration Cycle Schematic
53
Refrigerant Cycle Schematic - Indoor Units
53
Thermostat On/Thermostat off
54
Outdoor Unit
54
Operation Start/Operation End
54
Outline of Control
54
Electronic Expansion Valve (PMV) Control
55
Pulse Motor Valve (PMV) Control
55
Outdoor Fan Control
55
Capacity Calculation
56
Oil Level Valve Detection Control
56
Oil Equalizing this Control
57
Refrigerant/Oil Recovery Control
57
Release Valve Control
58
Fixed-Speed Compressor High Pressure Release Control
58
Compressor Winding Heating Control
59
Crank Case Heater Control
59
IPDU (Inverter) Control
60
Defrost Control (Reverse Defrost Method)
61
Cold Draught Prevention Control
62
IDU Exchanger Heat Removal
62
PMV (Pulse Motor Valve)
63
Cooling Operation in Low Ambient Temperature
63
Other Cautions
63
System Information Data Display (Displayed on the Inverter Unit Only)
67
Self Diagnostic Display Information
67
Outdoor Unit Information Data Display (Displayed on each Outdoor Unit)
68
Outdoor Cycle Data Display (Displayed on each Outdoor Unit)
69
Outdoor Unit Information Data Display (Displayed on Inverter Unit Only)
70
LED Display on Indoor PC Board-MCC-1361-01
71
General Type
71
Indoor PC Board Parts Layout
71
Control Circuit Configuration
71
Display on Remote Controller
72
Indoor PMV Full Open/Full Close Function
72
Switch Positions at Shipment from the Factory
73
Contents of Switch Set-Up
74
Jumper Set-Up
75
Service PC Board Selection Corresponded Table MCC-1361-01
75
Switch Set-Up
75
LCD Display
76
Remote Controller Check Display
76
Operating and Reading the Check Display
76
Troubleshooting
76
7 Segment Display
77
Filter Data
77
Check Data
77
Self Diagnostic Function
78
Diagnostic Procedure for Check Code
79
[04] Inverter Serial Signal Short Circuit
79
[0B] Drain Pump Fault
80
[0C] Indoor Sensor (TA) Short or Open Circuit Alarm
80
[11] Indoor Fan Motor Short Circuit Alarm
81
[12] Indoor PC Board Short Circuit Alarm
81
[14] G-Tr Short Circuit Protective Operation Alarm (Gate Transistor)
82
[1C] Extension IC, EEPROM Short Circuit Alarm
83
[17] Current Detection Circuit Alarm
83
[18] Outdoor Heat Exchanger Sensor (TE) Short Circuit
83
[1D] Compressor Error Alarm
84
[1F] Compressor Break down
85
[21] Inverter High Pressure SW Circuit Alarm
86
[22] High Pressure Protective Operation
87
[87] Missing Phase
88
Modify the Power Source Wiring
88
[89] Indoor over Capacity
88
[8D] Reduction in the No. of Connected Outdoor Units
89
[8E] Outdoor Unit Connection over Limit
89
[8F] Server Outdoor Address Incorrect
90
[93] Indoor TC1 Sensor Short Circuit Alarm
90
[94] Indoor TC2 Sensor Short Circuit Alarm
90
[95] Indoor/Outdoor Comunication Short Circuit
91
[96] No. of Connected Indoor Units over Capacity
92
[97] Central Management Communication Short Circuit
93
[98] Central Management Address Set-Up Fault
94
[99] Remote Controller Serial Signal Circuit Alarm
95
[9A] Indoor Unit Miswiring/Misconnection
96
[9F] Refrigerant Circulation Amount Shortage Judgement
96
[A0] Discharge Temp. Sensor (TD1) Short Circuit
97
[A2] Suction Temp. Sensor (TS) Short Circuit
97
[A1] Discharge Temp. Sensor (TD2) Short Circuit
97
[A6] Discharge Temperature TD1 Alarm
98
[A7] Suction Temperature (TS) Alarm
99
[AA] High Pressure Sensor (Pd) Short Circuit
99
[Ab] Pressure Sensor (Pd/Ps) Miswiring
100
[AE] Low Hz Time Discharge Temp. (TD1) Alarm
101
[AF] Outdoor Unit Power Source Phase Order Miswiring
101
[B9] Indoor Pressure Sensor Short Circuit
102
[B4] Low Pressure Sensor (Ps) Short Circuit
102
[Bb] Discharge Temperature (TD2) Alarm
103
[Bd] Mg-SW Protective Operation
104
[Be] Low Pressure (Ps) Protective Operation
105
[D1] Master Outdoor Unit Set-Up Alarm
106
[D2] Slave Outdoor Unit Alarm
107
[D3] TH Sensor Alarm
107
[D4] Oil Temp. (TK1) Sensor Alarm
107
[D5] Oil Temp. (TK2) Sensor Alarm
107
[D7] Low Oil Level Detection
108
2-Way Valve Leakage/Blockage Check Procedure
109
Blockage Check Procedure for Oil Return Circuit of Oil Separator
109
[D8] Oil Temperature (TK1) Detection Alarm
109
[D9] Oil Temperature (TK2) Detection Alarm
110
Oil Tank Peripheral Circuit Leakage/Blockage Check Procedure
111
[Da] Abnormal Overheat of Heat Sink
112
SV3C Valve Blockage Check Procedure
113
[Db] SV3C Valve Blockage Detection
113
[DC] SV3C Valve Leakage Detection
114
SV3C Valve Leakage Check Procedure
114
[DD] Outdoor PMV Refrigerant Leakage Detection
115
[De] Indoor Address Undefined
116
[Df] Outdoor Address Undefined
116
[E1] Fixed-Speed (1) High Pressure SW System Alarm
117
[F0] Fixed-Speed (2) High Pressure SW System Alarm
117
[E5] Inverter IOL Short Circuit
118
[E6] Fixed-Speed (1) IOL, OCR Alarm
119
[F1] Fixed-Speed (2) IOL, OCR Alarm
119
Segment Display Function
120
Outdoor Unit 7 Segment Display (Interface PC Board)
120
When the System Has Stopped Due to an Error of the Outdoor Unit, Check the Following Items
120
Description of Functional Parts
121
When an Outdoor Unit Has Failed
122
Emergency Operation
122
When One Compressor Has Failed (Back-Up Set-Up of Compressor)
122
Back-Up Operation
122
Fault in Fixed-Speed Unit (Back-Up of Slave Outdoor Unit)
123
Fault of Inverter Unit (Back-Up Set-Up of Master Outdoor Unit)
124
Outdoor Back-Up Set-Up in Cooling Season (Simple Setting Method)
125
Oil Tank Circuit System Error
126
Oil Level Judgement Result
126
Peripheral Circuits of Oil Tank
126
Forced Function of Oil Level Detection
126
Leak Test
127
Refrigerant Pipe Installation
127
Vacuuming
128
Charging the System with Additional Refrigerant
129
Calculating the Amount of Additional Refrigerant Required
129
Refrigerant in the System When Shipped from the Factory
129
Additional Refrigerant Charging Method
130
Additional Refrigerant Charging Amount Reference Chart
131
Procedure and Summary of Trial Operation
132
Check before Trial Operation
132
Trial Operation Check
133
Flowchart of Trial Operation Procedure
133
Power Source and Initial Set-Up Check
133
Fan Operation Check
133
Cooling Operation Check
134
Criteria for Indoor Air Inlet/Outlet Temperature Difference
135
Criteria of Operation Current Value
135
Criteria of Operation Pressure
135
Automatic Address (between Outdoor Unit and Indoor Unit)
136
Cautions During Automatic Addressing
136
Service Support Function
137
Check Function for Connection of Refrigerant Pipe and Control Transmission Line
137
Function to Start/Stop (On/Off) Indoor Unit from Outdoor Unit
138
Trial Cooling Operation Function
139
Collective Start/Stop (On/Off) Function
140
Individual Start/Stop (On/Off) Function
141
Alarm Clear Function
142
Clearing of Check Code on Remote Controller
142
Clearing the Interface PC Board of the Inverter Outdoor Unit
142
Clearing of Check Code Alarm by Resetting Power Source
143
Remote Controller Identification Function
143
Identifying Procedure
143
Pulse Motor Valve (PMV) Manual “Full Open” Function in the Indoor Unit
144
Pulse Motor Valve (PMV) Forced Full Open/Full Close Function in Outdoor Unit
144
Refrigerant Recovery Method
145
Refrigerant Recovery Method for a Failed Outdoor Unit
145
When Back-Up Operation Has Not Been Utilised
145
Replacing the Compressor
145
When Back-Up Operation Has Been Utilised
146
Position of Service Valve
147
Open/Close Direction of Service Valve
147
Explanatory Diagram: Modular Multi Service Valve
147
Compressor Replacement Procedure
148
Compressor Replacement Procedure
149
In Case of Removal of the Compressor from the Front Side
149
Outdoor Units (Inverter and Fixed-Speed Units)
149
Removing of Parts
149
Extraction of Oil from Compressor
149
Charging of Refrigerant
150
In Case of Removal of the Compressor from the Rear Side
151
Removing of Compressor
152
Replacing the Interface PC Board
155
MM-A0280Ht, Mma0280Hx, MM-A0280Ct, Mma0280Cx, MM-A0224Ht, Mma0224Hx, MM-A0224Ct, Mma0224Cx
156
Exploded Views and Service Parts
156
MM-A0280Ht, MM-A0280Ct, MM-A0224Ht, MM-A0224Ct, MM-A0280Hx, MM-A0280Cx, MM-A0224Hx, MM-A0224Cx
157
MM-A0160Hx, MM-A0160Cx
158
MM-A0280Hx, MM-A0280Cx, MM-A0224Hx, MM-A0224Cx
160
Outdoor Unit Electrical Parts Assembly
160
MM-A0280Ht, MM-A0280Ct, MM-A0224Ht, MM-A0224Ct
160
MM-A0280Ht, MM-A0280Ct, MM-A0224Ht, MM-A0224Ct, MM-A0280Hx, MM-A0280Cx, MM-A0224Hx, MM-A0224Cx, MM-A0160Hx, MM-A0160Cx
161
Built-In Duct–MM-B056, MM-B080, MM-B112, MM-B140
162
Ceiling Type–MM-C042, MM-CR042, MM-C056, MM-CR056, MM-C080, MM-CR080, MM-C112, MM-CR112, MM-C140, MM-CR140
163
High Wall–MM-K042, MM-KR042, MM-K056, MM-KR056, MM-K080, MM-KR080
164
Chassis–MM-N028, MM-N042, MM-N056, MM-N080
165
Low Wall–MM-S056, MM-SR056, MM-S080, MM-SR080
166
Built-In Slim Duct–MM-SB028
167
2-Way Cassette–MM-TU028, MM-TU042, MM-TU056
168
4-Way Cassette–MM-U056, MM-U080
169
4-Way Cassette–MM-U112, MM-U140
170
Ceiling Panel-RBC-U133PG(W)-PE
171
Ceiling Panel-RBC-U264PG(W)-E, RBC-U264PGR(W)-E
172
Ceiling Panel-RBC-U464PG(W)-E, RBC-U464PGR(W)-E
173
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