Confirming Function Of Connection Of Refrigerator Pipe And Signal Line For Control - Haier AU96NFTAHA Service Manual

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3.Confirming function of connection of refrigerator pipe and signal line for control

This air conditioner system has the function of checking and confirming the wrong connection of refrigerant pipe and
signal line for control between indoor unit group and outdoor unit (bridging of outdoor unit).
Before carrying out checking and confirming function, be sure to confirm the following matters:
1.When bridging the central controller with outdoor unit, it can not check and conform;
2. When conducting this check to confirm the system, the outdoor unit must be checked and confirmed one by one,
and meanwhile, when checking and confirming several outdoor units, the misjudgment may occur;
3. For the indoor unit group, outdoor unit and indoor unit group that may have wrong connection needing to check,
the power should be switched on from the outdoor unit.
Checking and conforming sequence:
Switching on the power
For outdoor unit, adjust SW01 on the I/F PCB to
"0" and SW02 to "6" to confirm the number of
indoor unit group through the display on the 7-
segment nixie tube, thus confirming whether its
number is completely in accordance with the preset
number connected.
For outdoor unit, the switch on the interface I/F
PCB should be set as follows:
SW01 is "0", SW02 is "9": cooling
SW01 is "0", SW02 is "10": heating
Press the micro switch SW04 on the I/F PCB for
over 2 seconds to confirm the display content on
the nixie tube is "CC" when cool and "HH" when
heat.
After 15 minutes, the display on the 7-segment nixie
tube will be the number of indoor unit group of
inspection code.
Set SW01 "4", SW02 according to the sequence of
the address to confirm the inspection code of the
indoor unit.
After checking and confirming, resume the display
switching switch SW01 and SW02 on the interface
base plate to "0". *
32
Indoor
temperature
[*]
SW02"10"
21
-15
1. The time of 15 minutes will be needed no matter it is
under the normal state or the mismatching line state.
2. The number of indoor unit group other than the
inspection signal of sending out the code of mismat-
ching line will also be counted. So please confirm the
inspection code.
36
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SW02"9"
10
Outdoor temperature [*]
43

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