Mitsubishi Electric PURY-P200 Service Handbook page 149

3. System error
Checking
Meaning, detecting method
code
Total capacity abnormality
7100
Total capacity of indoor units in the
same refrigerant system exceeds
limitations.
Trouble source :
Outdoor unit
7101
Capacity code abnormality
Error display at erroneous
connection of Indoor unit of which
model name can not be connected.
Trouble source :
Outdoor unit
Indoor unit
7102 Error in the number of connected
units
Number of units connected in the
same refrigerant system exceeds
limitations.
Trouble source:
Outdoor unit
7105 Address setting error
• Erroneous setting of OC unit
address
• Erroneous setting of BC con-
troller address
Trouble source :
Outdoor unit
BC controller
Cause
(1) Total capacity of indoor units
in the same refrigerant
system exceeds the
following:
Total
Model
capacity
P200 300
P250 375
P300 450
P350 525
P400 600
P450 675
P500 750
P550 825
P600 900
P650 975
(1) The Indoor unit model name
(model code) connected is
not connectable.
Connectable range :
20 ~ 250
(2) Erroneous setting of the
switch (SW2) for setting of
model name of indoor unit
connected.
(1) Number of unit connected to
terminal block (TB3) for
outdoor/indoor transmission
line exceeds limitations
given below:
Number
Item
of units
1) Total
1~15 : P200 type
number of
1~16 : P250~P300
indoor units
types
1~20 : P350 type
1~24 : P400~P550
types
1~32 : P600,P650
types
2) Number of
LOSSNAY
units
(Only when
0 or 1
the free
address is
set.)
(2) Disconnection of transmission
wiring at outdoor unit.
(3) Short circuit of transmission
line in case of (2) and (3),
remote controller displays
"HO".
(1) Setting error of Outdoo runit
address.
The address of Outdoor unit
is not being set to 51~100.
(2) The address of BC controller
is not being set within
51~100.
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Checking method & Countermeasure
(a) Check for the model total (capacity
cord total) of indoor units connected.
(b) Check whether indoor unit capacity
code (SW2) is wrongly set.
For erroneous switch setting, modify
it, turn off power source of outdoor
unit, and indoor unit simultaneously
for 5 minutes or more to modify the
switch for setting the model name
(capacity code).
(a) Check for the model name of the
Indoor unit connected.
(b) Check for the switch (SW2 if indoor
controller for setting of Indoor unit
model name of generating address.
When it is not agreed to the model
name, modify the capacity code
while shutting off the power source
of Indoor unit.
✻ The capacity of Indoor unit can
be confirmed by the self-
diagnosis function (SW1
operation) of indoor unit.
(a) Check whether the connection of
units to the terminal block for
indoor/outdoor transmission wiring
(TB3) of outdoor unit is not
exceeding the limitation.
(See (1) ~ (2) left.)
(b) Check for (2), (3), and (4).
(c) Check for the connection of
transmission wiring to the terminal
block for centralized control is
erroneously connected to the
indoor/outdoor transmission wiring
terminal block (TB3).
(d) Check for the model total (capacity
code total) of indoor units
connected.
Check that the address of OC unit is
being set to 51~100.
Reset the address if it stays out of the
range, while shutting the power source
off.
When BC controller is out of the range,
reset it whileshutting the power source
of both OC unit and BCcontroller off.