Daikin DCS302C71 Operation Manual page 21

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JH Outdoor unit · Oil temperature sensor (Th5) system error
L0 Outdoor unit · Inverter system fault
L4 Outdoor unit · Inverter cooler fault
Outdoor unit · Ground circuit for compressor motor, short circuit,
L5
or power unit short circuit
L6 Outdoor unit · Ground circuit for compressor motor, short circuit
Outdoor unit · Compressor overload, compressor motor wire
L8
disconnection
L9 Outdoor unit · Compressor lock
LA Outdoor unit · Power unit error
Outdoor unit · Transmission error between inverter and outdoor
LC
control unit
M1 Central controller: PC board fault
M8 Transmission error between central controllers
MA Central controller: Incorrect combination
MC Central controller: Address setting fault
P0 Insufficient gas (thermal storage)
P1 Outdoor unit · Power voltage imbalance, phase loss
P4 Outdoor unit · Power unit temperature sensor error
Pressure drop due to insufficient refrigerant, electric expansion
U0
valve fault, etc.
U1 Reversed or lost phase
U2 Power voltage error, momentary electrical stoppage
Transmission error between indoor unit/BEV unit and outdoor/BS
U4
unit, Transmission error between outdoor unit and BS unit
Transmission error between remote controller and indoor
U5
control unit
U5 Remote controller board fault or remote controller setting fault
U6 Transmission error between indoor units
Transmission error between outdoor units
U7 Transmission error between outdoor unit and ice thermal
storage unit
Transmission error between outdoor units
U7
(cooling/heating batch, low-noise operation)
Transmission error between master remote controller and slave
remote controller (slave remote controller error)
U8
Incorrect combination of indoor unit and remote controller within
a single system (model)
Transmission error between indoor unit/BEV unit and outdoor
unit within a single system
U9
Transmission error between BS unit and indoor unit/BEV unit and
outdoor unit within a single system
Incorrect combination of indoor, BS, and outdoor units within a
single system (model, number of units, etc.)
UA
Incorrect combination of indoor unit and remote controller
(remote controller in question) BS unit connection position fault
UC
Central control group numbers overlap
UE Transmission error between indoor unit and central controller
Unset system, incorrect settings between BEV unit and
UF
indoor unit
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