U-Match Series DC Inverter Service Manual
32
When there is a malfunction during operation, error will be displayed on the temperature displaying
zone of LCD. When several malfunctions occur at the same time, these error code will be displayed
circularly.
Compressor high discharge temperature protection
Communication malfunction
Malfunction of indoor fan motor
Malfunction of indoor ambient temperature sensor
Malfunction of evaporator temperature sensor
Malfunction of condenser temperature sensor
Malfunction of outdoor ambient temperature sensor
Malfunction of discharge temperature sensor
Malfunction wired controller temperature sensor
Outdoor unit Capacity code error
Indoor unit Capacity code error
Malfunction of outdoor main control memory chip
Malfunction of electric box sensor
Compressor overload protection
Malfunction of DC fan motor
Drive desynchronizing protection
Compressor phase protection
Models of indoor unit and outdoor unit do not match with each other
Direction changing malfunction of 4-way valve
Communication malfunction between main control and drive
Malfunction of drive module sensor
High temperature protection of drive module
Malfunction of drive current
Sensor connection protection
Temperature excursion protection
Low voltage protection of bus bar
High voltage protection of bus bar
Charging circuit malfunction
Abnormity of input voltage
Malfunction of outdoor drive memory chip
Malfunctions of outdoor unit, please refer to status of error indicator in outdoor unit
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