Carrier 38MBRQ48A-3 - Diagnostic Error Guides; Indoor Unit Error Display Table; Wired Controller Error Display Table

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