38MBR: Service Manual
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
17
DIAGNOSTIC GUIDES
Table 13 — Indoor Unit Error Display
O (light) X (off)
☆
(flash)
Table 14 — Error Display on Two Way Communication Wired Controller
OPERATION LAMP
TIMER LAMP
DISPLAY
LED STATUS
SOLUTION
☆
1 time
X
E0
Indoor unit EEPROM parameter error
Page 20
☆
2 times
X
E1
Communication malfunction between indoor and outdoor units
Page 22
☆
4 times
X
E3
Fan speed is operating outside of the Normal Range
Page 25
☆
5 times
X
E4
Indoor room temperature sensor (T1) malfunction
Page 26
☆
6 times
X
E5
Evaporator coil temperature sensor (T2) malfunction
Page 26
☆
7 times
X
EC
Refrigerant leakage detection
Page 27
☆
8 times
X
EE
Water-level alarm malfunction
Refer to Indoor Unit
Service Manual
☆
1 time
O
F0
Current overload protection
Page 21
☆
2 times
O
F1
Outdoor ambient temperature sensor (T4) malfunction
Page 26
☆
3 times
O
F2
Condenser coil temperature sensor (T3) malfunction
Page 26
☆
4 times
O
F3
Compressor discharge temperature sensor (T5) malfunction
Page 26
☆
5 times
O
F4
Outdoor unit EEPROM parameter error
Page 20
☆
6 times
O
F5
Outdoor fan speed malfunction
Page 25
☆
7 times
O
F6
Indoor coil outlet pipe sensor (Located on outdoor unit low pressure valve)
Refer to Indoor Unit
Service Manual
☆
8 times
O
F7
Communication malfunction between the cassette optional lift panel and the unit
Refer to Indoor Unit
Service Manual
☆
9 times
O
F8
Cassette optional lift panel malfunction
Refer to Indoor Unit
Service Manual
☆
10 times
O
F9
Cassette optional lift panel not closed
Refer to Indoor Unit
Service Manual
☆
1 time
☆
P0
Inverter module (IPM) malfunction
Page 28
☆
2 times
☆
P1
Over-voltage or under-voltage protection
Page 31
☆
3 times
☆
P2
Compressor top high temperature protection (OLP)
Page 32
☆
4 times
☆
P3
Low ambient temperature cut off in HEATING mode
Refer to Indoor Unit
Service Manual
☆
5 times
☆
P4
Compressor drive malfunction
Page 33
☆
6 times
☆
P5
Indoor units mode conflict
Refer to Indoor Unit
Service Manual
☆
7 times
☆
P6
Low pressure protection
Refer to Indoor Unit
Service Manual
☆
8 times
☆
P7
Outdoor IPM temperature sensor error
Page 34
DISPLAY
LED STATUS
SOLUTION
F0
Communication error between wired controller and indoor unit
Page 21
F1
The cassette faceplate is abnormal
Page 26
E1
Communication malfunction between indoor and outdoor units
Page 22
E2
Indoor room temperature sensor (T1) malfunction
Refer to Indoor Unit Service Manual
E3
Evaporator coil temperature sensor (T2) malfunction
Refer to Indoor Unit Service Manual
E5
Outdoor ambient temperature sensor (T4) malfunction
Page 26
E5
Condenser coil temperature sensor (T3) malfunction
Page 26
E5
Compressor discharge temperature sensor (T5) malfunction
Page 26
E7
Indoor unit EEPROM parameter error
Refer to Indoor Unit Service Manual
E8
Indoor fan speed malfunction
Refer to Indoor Unit Service Manual
EF
Refrigerant leak detection
Refer to Indoor Unit Service Manual
EE
Water-level alarm malfunction
Refer to Indoor Unit Service Manual
ED
Outdoor unit EEPROM parameter error
Refer to Indoor Unit Service Manual
ED
Outdoor fan speed malfunction
Refer to Indoor Unit Service Manual
EB
Inverter module (IPM) malfunction
Refer to Indoor Unit Service Manual
EF
Other malfunction