Haier HSU-09H03/R(DB) [87/131] Communication error between the indoor and

Haier HSU-09H03/R(DB) [87/131] Communication error between the indoor and
7.4.8 Communication error between the indoor and
outdoor units
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The date received from the another unit in indoor unit-outdoor unit signal
transmission is
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checked whether is normal
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When the date sent from the another unit cannot be received normally,or when the content
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of the data is abnormal
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6XSSRVHGƵ
indoor unit- outdoor unit signal transmission error due to wiring error
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Faulty PCB
Troubleshooting
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Be sure to turn off power switch before connect or disconnect connector,
or else parts damage may be occurred.
Restart the a/c and it
becomes normally.
If starting up
normally, but
malfunction occurs
again after a while
Check whether the linking
cable between the indoor and
outdoor is well connected or
whether its core wires are
well insulated.
Yes
Yes
Yes
No
No
No
1. Reconnect the linking cable;
2. Replace the linking cable with
new one.
The outdoor mainboard
needs dedust.
The outdoor mainboard needs
dehumidification.
Demastic Air Conditioners
+6809,12H03/R(DB)
System Diagnosis
84

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