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DC Inverter Multi
VRF Service Manual
Fig.4 Patching Board Connected with Some Indoor Unit
If the system stops for error, the address code of patch board and error code will be displayed alternately.
2 FLOW CHART OF TROUBLESHOOTING
The repair personnel shall collect the error information as more as possible for careful study and list those electric or
system parts that might cause the error. Then, the repair personnel shall be able to identify the specic cause of error and
nd out the problem parts.
Keep an eye on the complete equipment. Do not restrict to a part, but taking care to check the state of complete
equipment.
Study from the simple point. o analyze, judge and identify the cause of trouble, please start from the simple operation
and nally proceed to such complicated operations as discharge of refrigerant, disassembly of equipment, replacement of
parts and lling of refrigerant. Be prudent to nd out the cause. The unit might be incurred to multiple errors, and such
errors might be caused by multiple reasons. It is also possible that one error is developed into multiple errors. Therefore, a
comprehensive analysis system shall be set up to ensure that the result of judgment is more correct and reliable
2�1 High-pressure Protection
Error display on hand controller: E1
Outdoor units mainboard indicator: led4: dark; led3: dark; led2: dark; led1: blink
Indoor units mainboard indicators:
Patio indoor units: red led: blink; green led: dark; yellow led: dark
FY wall-mounting motor: red led: blink; yellow led: dark
New FY wall-mounting motor: red led: blink; green led: dark; yellow led: dark
Hanging indoor units: red led: blink; green led: dark; yellow led: dark
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