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KURO
Toyotomi KURO User Manual
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Mini Service Manual
v.2-2020
2
Table of Contents
Floor Standing
3
Error Code List
4
Flow Chart of Troubleshooting for Main Malfunctions
9
Troubleshooting for Jumper Cap
9
Main Check Points
9
Communication Malfunction E6
10
Communication Error of Indoor and Outdoor Unit
10
Communication Error between Wired Controller and Indoor Unit
11
IPM Protection H5
12
Over-Phase Current of Compressor P5
12
Overload Protection of Compressor H3
13
Overload Protection
14
Troubleshooting for Temperature Sensor
15
Temperature Sensor Error
15
High Temperature Prevention Protection E8
17
High Power L9
17
Desynchronization Diagnosis for Compressor H7
19
Malfunction Diagnosis for Failure Startup
20
Charging Malfunction of Capacitor PU
21
Troubleshooting-Motor(Indoor Fan) Doesn't Operate
22
AC Overcurrent Protection
24
Electrical Heating Operation Error
25
Relay Adhesion Error (PTAC)
26
Current Imbalance Error (PTAC)
27
Combination Method of Electrical Heating Is Incorrect
28
Operation Current of Electrical Heating Is Abnormal
29
Circuit of Temperature Limiter Is Disconnected
30
Troubleshooting on Full Water Protection
31
Water Pump Protection Error
32
Resistance Table of Ambient Temperature Sensor for Indoor
33
Error Code
38
E1- Internal Temperature Sensor Error
39
E2 -External Coil Sensor Error
40
E3 -Internal Coil Sensor Error
41
E4 -Internal Fan Error of Wall Mounted Air Conditioner
42
E4- Internal Fan Error of Wall Mounted Air Conditioner (DC Motor)
43
E4- Sliding Door Error of Floor Standing
44
E5(5E) -Internal and External Communication Error
45
F0- External DC Fan Error (3-Core Terminal Motor)
46
F1 -Module Protection Error
47
F2- PFC Protection Error
48
F3- Compressor Out-Of-Step Error
49
F4- Exhaust Sensor Error
50
F5 -Compressor Top Head Sensor Error
51
F6- External Temperature Sensor Error
52
F7-OVP or UVP Error
53
F8-Main External Control Panel and Module Panel Communication Error
54
F9- Outdoor EE Error
55
P1-Water Full Alarm
58
P2-High Voltage Switch Protection（Pe: High Voltage Switch Error）
59
P3- Fluoride Deficiency Protection
60
P4 Outside Dish Prevent Overload Protection (Refrigeration)
61
P6- High Temperature Protection in Heating Room
62
P7- Indoor Anti-Freeze Protection During Cooling
63
P8-Outdor Unit Overcurrent Protection Error Lock
64
L0- DC Overvoltage Error
65
L1- Compressor Phase Current Overcurrent Protection
66
L2- Compressor Lost Step Protection
66
L3- Compressor Phase Error
67
L4-Compressor Drive Module IPM Fault
68
L5- PFC Overcurrent Hardware Protection
69
L6- PFC Overcurrent Software Protection
69
L7- Current Detection AD Abnormal Protection
69
LC- PFC Current Detection AD Abnormal Protection
69
L8- Shunt Resistance Imbalance Fault
70
L9- IPM Temperature Sensor Error
71
LA- Compressor Startup Failure
72
LE- DC Fan Motor Phase Error
73
LF- DC Fan Motor Lost Step Protection
73
LH- DC Fan Motor IPM Protection
74
Maintenance
76
Console Models
76
Troubleshooting for Main Malfunction
78
Troubleshooting for Communication Malfunction
79
Troubleshooting for C5 Malfunction
81
Troubleshooting for H6 Malfunction
82
Troubleshooting for Normal Malfunction
83
Air Conditioner Can't be Started up
83
Poor Cooling for Air Conditioner
83
Horizontal Louver Can't Swing
83
ODU Fan Motor Can't Operate
84
Compressor Can't Operate
84
Air Conditioner Is Leaking
84
Abnormal Sound and Vibration
84
Reference Sheet of Celsius
85
Set Temperature
85
Ambient Temperature
85
Configuration of Connection Pipe
85
List of Resistance for Ambient Temperature Sensor
86
Precautions before Performing Inspection or Repair
90
Maintenance
90
Flashing LED of Indoor/Outdoor Unit and Primary Judgement
91
Requirement of Malfunction Display
91
Malfunction Display Method
91
Malfunction Display Control
91
Malfunction Checking and Elimination
92
IPM Protection Malfunction
92
PFC Protection Malfunction, Capacity Charging Malfunction
94
Compressor Desynchronizing Malfunction
95
Compressor Overload, Diacharge Protectionmalfunction
97
Start Failuremalfunction
98
Temperature Sensor Malfunction
99
DC Fan Malfunction
100
Communication Malfunction
101
Anti-High Temperatureand Overload Malfunction
103
Maintenance Method for Normal Malfunction
104
Poor Cooling (Heating) for Air Conditioner
104
Troubleshooting
106
Malfunction Indicator
106
Energize the Unit
108
Error Code
121
Troubleshooting
123
E1‖ Compressor High Pressure Protection
123
E2‖ Indoor Anti-Freezing Protection
124
Ambient Temperature of IDU and ODU Is too Low
125
E4 Compressor Air Discharge High-Temperature Protection
126
E6 Communication Error
127
E8 Indoor Fan Error
128
E9 Water Overflow Protection
129
F0 Indoor Ambient Temperature Sensor Error
130
F1 Evaporator Temperature Sensor Error
131
F2 Condenser Temperature Sensor Error
132
F3 Outdoor Ambient Temperature Sensor Error
133
F4 Discharge Temperature Sensor Error
134
F5 Wired Control Temperature Sensor Error
135
C5 IDU Jumper Cap Error
136
EE IDU or ODU Memory Chip Error
136
PF Electric Box Sensor Error
137
H3 Compressor Overload Protection
138
H4 Overload
138
H5 IPM Protection
139
H6 DC Fan Error
140
H7 Driver Out-Of-Step Protection
141
HC PFC Protection
142
Lc Startup Failure
143
Lp IDU and ODU Unmatched
144
U7 4–Way Valve Switch-Over Error
145
P0 Driver Reset Protection
145
P5 Over-Current Protection
146
P6 Master Control and Driver Communication Error
147
P7 Driver Module Sensor Error
148
P8 Driver Module High Temperature Protection
149
PA AC Current Protection
149
AC Current Protection
150
Pc Driver Current Error
150
Pd Sensor Connection Protection
151
PL Bus Low-Voltage Protection
151
Bus Low-Voltage Protection
152
PH Bus High-Voltage Protection
152
PU Charge Loop Error
153
Ee Drive Memory Chip Error
153
C4 ODU Jumper Cap Error
154
EL Emergency Stop (Fire Alarm)
155
Failures Not Caused by Errors
155
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Toyotomi KURO Specifications
General
Type
Split System
Cooling Capacity
2.5 kW
Refrigerant
R32
Inverter
Yes
Power Consumption (Heating)
0.75 kW
Noise Level (Outdoor)
48 dB
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