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7102
7105
7111
Connected unit count over
Address setting error
•Erroneous setting of Outdoor
unit address
Trouble source : Outdoor unit
Remote control sensor error
Error not providing the tem-
perature designed to remote
controller sensor.
Trouble source : Indoor unit
2) The Outdoor unit address is being
set to 51~100 under automatic
address mode (Remote controller
displays “HO”).
3) Slipping off of transmission wiring
at Outdoor unit.
4) Short circuit of transmission line in
case of 3) & 4), remote controller
displays “HO”.
1) Setting error of Outdoor unit ad-
dress
The address of Outdoor unit is not
being set to 51~100.
1) In case when the old type remote
controller for M-NET is used and
the remote controller sensor is de-
signed on indoor unit. (SW1-1
turned ON)
a) Check for the model total (capacity code total)
of indoor units connected.
Check that the address of Outdoor unit is being
set to 51~100.
Reset the address if it stays out of the range,
while shutting the power source off.
a) Replace the old remote controller by the new
remote controller.
Checking
code
Meaning, detecting method Cause Checking method & Countermeasure
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