AUX-DC inverter ARV outdoor unit individual series technical manual
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3. Indoor unit error code explanation
Indoor ambient temperature sensor
failure
The fuse of indoor PCB is broken
temperature sensor broken , or exceed test limit
Temperature sensor about middle
position of evaporator failure
The fuse of indoor PCB is broken
temperature sensor broken , or exceed test limit
Indoor coil pipe inlet temperature
sensor failure
The fuse of indoor PCB is broken
temperature sensor broken , or exceed test limit
Indoor coil pipe outlet temperature
sensor failure
The fuse of indoor PCB is broken
temperature sensor is broken , or exceed test limit
Indoor water pump failure
Water pump switch short-circuit or unconnected
Drain pipe block or up lean
Indoor fan blade is stuck
The connection between PCB and fan motor failure.
The connection between PCB and step motor failure.
Indoor unit ERRPROM module failure
Indoor unit PCB is broken
Errprom module is broken.
Communication error between indoor
unit and outdoor unit
The communication wire is broken.
Some or all of the Indoor units are power off
Communication error between indoor
unit and wire controller.
The communication wire is broken.
Indoor PCB or the wired controller is broken
The default mode is heating priority, unit which needs to
run in cooling mode will stand by and show mode conflict
Indoor unit address repeated
Two or more indoor units were set the same address.
Indoor unit total capacity exceeded
Capacity of indoor units is less than 50% or more than
130% of outdoor unit capacity.
The EXV can’t close normally
EXV is blocked or the coil is dropped from the valve.
Indoor unit temperature sensor is abnormal.
The EXV can’t open normally
EXV is blocked or the coil is dropped from the valve.
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