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Checking
code
6608 1) At the collision of mutual transmis-
sion data when transmission
wiring is modified or the polarity is
changed while turning the power
source on, the wave shape
changes detecting error.
2) Repeating of transmission error
due to noise.
3) Damping of transmission line volt-
age/signal due to exceeding of the
acceptable range for transmission
wiring.
•Farthest Less than 200m
•RC wiring Less than 12m
4) Damping of transmission voltage/
signal due to improper type of
trans-mission line.
• Wire size : More than 1.25mm
2
No response error
Though acknowledgement of
receipt (ACK) is received after
transmission, no response
command is returned.
Detected as error by transmis-
sion side when the same symp-
tom is re-peated 10 times with
an interval of
3 seconds
Note:
The address/attribute
shown on remote con-
troller indicates the con-
troller which has de-
tected error.
a) Generation at test run
Turn off the power sources of OC unit, IC unit
and Fresh Master for more than 5 minutes
simultaneously, and make them again.
→ Returning to normal state means the
trouble detection due to transmission line
work while powering.
→ If generated again, follow b).
b) Check 3) and 4) of the causes left.
→ If cause is found, remedy it.
→ If cause is not found, follow c).
c) Investigate the transmission wave shape/
noise on transmission line according to
<Investigation method of transmission wave
shape/noise>.
Much possibility if 6602 is generated.
Meaning, detecting method Cause Checking method & Countermeasure
(3) System error
Checking
code
Meaning, detecting method Cause Checking method & Countermeasure
7100
7101
7102
Total capacity error
Total capacity of indoor units in
the same refrigerant system
exceeds limitations.
Trouble source:
Outdoor unit
Capacity code error
Error display at erroneous con-
nection of Indoor unit of which
model name can not be con-
nected
Trouble source :
Outdoor unit
Indoor unit
Connected unit count over
Number of units connected in
the same refrigerant system
exceeds limitations.
Trouble source:
Outdoor unit
1) Total capacity of indoor units in
the same refrigerant system ex-
ceeds the following:
2) Erroneous setting of OC model
selector switch (SW3-10)
1) The Indoor unit model name
(model code) connected is not
connectable.
Connectable range...... 08~48
2) Erroneous setting of the switch
(SW2) for setting of model name
of Indoor unit connected.
1) Number of unit connected to ter-
minal block (TB3) for outdoor/in-
door transmission line exceeds
limitations given be-lows:
Item Limitation
1 Total of 1~13 (80)
Indoor unit 1~16 (100)
2 Total of Indoor
unit & RC
1~35
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 coad).
Check for the model selector switch (Dip
switches SW3-10 on outdoor unit control circuit)
of OC.
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-diagnosios 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), 4), left.
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).
Model Total capacity
PUHY-80 104
PUHY-100 130
12345678910
SW3
ON
OFF
.....
...
100
80
-
81
-