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Installation Procedure
Setting key operation and checking the view mode with tact switch
K1 control KEY operation Display on segment
Press and hold 1 time Auto trial operation
“K” “K” “BLANK” “BLANK”
Display can be changed into “K” “9” “X” “X”
(Last two digits display the progress.)
K1 (Number of press) KEY operation Display on segment
1 time Refrigerant charging in Heating mode “K” “1” “BLANK” “BLANK”
2 times Trial operation in Heating mode “K” “2” “BLANK” “BLANK”
ߥϩʪϑ Pump out in Heating mode (Outdoor unit address 1) “K” “3” “BLANK” “1”
4 times Pump out in Heating mode (Outdoor unit address 2) “K” “3” “BLANK” “2”
5 times Pump out in Heating mode (Outdoor unit address 3) “K” “3” “BLANK” “3”
6 times Pump out in Heating mode (Outdoor unit address 4) “K” “3” “BLANK” “4”
7 times Vacuuming (Outdoor unit address 1) “K” “4” “BLANK” “1”
8 times Vacuuming (Outdoor unit address 2) “K” “4” “BLANK” “2”
9 times Vacuuming (Outdoor unit address 3) “K” “4” “BLANK “ “3”
10 times Vacuuming (Outdoor unit address 4) “K” “4” “BLANK” “4”
11 times Vacuuming (All outdoor units) “K” “4” “BLANK” “A”
12 times Inverter Fault Detection (Comp#1) “K” “5” “I” “1”
ߣߥϩʪϑ Inverter Fault Detection (Comp#2) “K” “5” “I” “2”
14 times Inverter Fault Detection (Fan#1) “K” “5” “F” “1”
15 times Inverter Fault Detection (Fan#2) “K” “5” “F” “2”
16 times End Key operation -
WARNING
• After installing the product, be sure to perform leak tests on the piping connections. After pumping down refrigerant to inspect or
relocate the outdoor unit, be sure to stop the compressor and then remove the connected pipes.
– Do not operate the compressor while a valve is open due to refrigerant leakage from a pipe or an unconnected or incorrectly
connected pipe. Failure to do so may cause air to flow into the compressor and too a high pressure to develop inside the refrigerant
circuit, leading to an explosion or product malfunction.
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