Mitsubishi Electric PUMY-P100VHMA Technical & Service Manual page 51

Display
Abnormal point and detecting method
7101 Capacity code error
When the connected indoor unit models
cannot be connected, <7101> is displayed.
7102 Number of connecting unit over
When the number of connecting unit
exceeds limitations, error code <7102>
is displayed.
Even if the indoor unit is not connected,
becomes <7102> is display.
Address setting error
7105
Address setting of the outdoor unit is
wrong.
7111 Remote controller sensor
In the case of M-NET remote controller,
it is an abnormality when incapable
response returns from the M-NET remote
controller during the operation.
0403 Serial communication error
Abnormal if serial communication between
outdoor multi board and outdoor power
board is defective.
Causes
The indoor unit models is not possible
to connect.
[PUMY-P100/125/140VHM]
The indoor unit of 20-140(code 4-28)
is possible to connect.
[PUMY-P100/125/140VHMA]
The indoor unit of 15-40(Code 3-28) is
possible to connect.
Number of connecting unit exceeds
limitations. It is assumed abnormality
excluding the following cases;
1) The indoor unit can be totally
connected up to 6(P100)/8(P125,
140) units.
2) Ventilation unit connecting is only
1 unit.
Addresses wrong setting of the outdoor
unit.
The outdoor unit is not set in 000 or in
the range of 51-100.
When an old type remote controller for
M-NET is used, the remote controller
sensor is specified (SW1-1 is ON).
Breaking of wire or contact failure of
connector CN2
Breaking of wire or contact failure of
connector CN4
Defective communication circuit of
outdoor power board
Defective communication circuit of
outdoor multi board for power board
51
Check points
Check the model code registration
switch (indoor controller board SW2)
in the connected indoor unit.
The outdoor unit SW1 operation can
check model code of the connected
indoor units.
1 3 4 5 6 7 8
on
Code of indoor unit No.1
1 3 4 5 6 7 8
on
Code of indoor unit No.2
1 3 4 5 6 7 8
on
Code of indoor unit No.3
1 3 4 5 6 7 8
Code of indoor unit No.4 on
1 3 4 5 6 7 8
on
Code of indoor unit No.5
1 3 4 5 6 7 8
Code of indoor unit No.6 on
1 3 4 5 6 7 8
on
Code of indoor unit No.7
1 3 4 5 6 7 8
Code of indoor unit No.8 on
Check whether the connecting unit
exceeds a number of limitations or
not.
Check the address setting of the
outdoor unit. The address should be
set in 000 or 51-100.
When the setting is out of the range,
reset it, turn off power supply of the
outdoor unit, indoor unit and lossnay
for 2 minutes or more at the same
time, and turn on power supply again.
Replace the remote controller to
M-NET remote controller.
Check connection of each
connector CN2, CN4.
Replace outdoor power board.
Replace outdoor multi board.
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