U-Match Series DC Inverter Service Manual
37
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 codes will be displayed
circularly.
When there is a malfunction, please turn off the unit and ask the professional for maintenance.
For example, E1 means high pressure protection during operation.
Figure 2-6-1
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
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