Super Free Match
Service Manual
MAINTENANCE
123
Indoor unit E gas tube
temperature sensor error
Flash 9 time
b7 b7 indoor unit address
Indoor unit E liquid tube
temperature sensor error
Flash 10 times
b5 b5 indoor unit address
3 FLOW CHART OF TROUBLESHOOTING
Service personnel shall collect the malfunction information as much as possible and research them
thoroughly, list these electrical parts which may cause malfunction, and shall be able to determine the specific
reason and solve the faulted parts. Observe the status of the complete device and do not observe the partial.
It is advised to start from the simple operation during analyzing, judging and confirming malfunction reason,
then conduct the complicated operations such removal of device, part replacement and refrigerant filling.
Find the malfunction reason carefully as unit may occur several malfunction at the same time and one
malfunction may develop into several malfunction, so entire system analysis shall be established to make the
judged result exact and credible.
3.1 Malfunction display: Current protection
Current protection
Check the
wiring of the compressor: is it
properly connected?
Is the current
value higher than the preset
value of protector?
Is the
high pressure normal?
Is the
voltage normal?
Replace the mainboard
Adjust the compressor
wiring
Replace the overcurrent
protector
Refer to high voltage
protection
Contact the power supply
company
Yes
No
Yes
Yes
Yes
No
No
No
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