Carrier 40MB C Series Service Manual page 16

Indoor Unit Diagnostic Guide
Operation Lamp Timer Lamp
☆
X
1 time
☆ 2 times
X
☆4 times
X
☆5 times
X
☆6 times
X
☆7 times
X
☆8 times
X
☆1 time
O
☆2 times
O
☆3 times
O
☆4 times
O
☆5 times
O
☆6 times
O
☆7 times
O
☆8 times
O
☆9 times
O
☆10 times
O
☆1 time ☆
☆2 times ☆
☆3 times ☆
☆4 times ☆
☆5 times ☆
☆6 times ☆
☆7 times ☆
☆8 times ☆
Table 7—Indoor Unit Error Display
Display LED Status
E0 Indoor unit EEPROM error
E1 Communication malfunction between indoor and outdoor units
E3 Indoor fan speed has been out of control
E4 Indoor room temperature sensor T1 open circuit or short circuit
E5 Evaporator coil temperature sensor T2 open circuit or short circuit
EC Refrigerant leakage detection
EE Water-level alarm malfunction
F0 Current overload protection
F1 Open circuit or short circuit of outdoor ambient temperature sensor T4
F2 Open circuit or short circuit of condenser coil temperature sensor T3
F3 Open circuit or short circuit of Compressor discharge temperature sensor T5
F4 Outdoor unit EEPROM error
F5 Outdoor fan speed has been out of control
F6 T2B sensor error
F7 Lifting-panel communication error
F8 Lifting-panel malfunction
F9 Lifting-panel is not closed
P0 IPM malfunction
P1 Over voltage or over low voltage protection
P2 High temperature protection of compressor top
P3 Outdoor low temperature protection
P4 Inverter compressor drive error
P5 Mode conflict
P6 Compressor low-pressure protection
P7 Outdoor IGBT temperature sensor error
O (light) X (off) ☆ (flash)
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