En-13
6. 2. Additional charging
Refrigerant suitable for a total piping length of 164 ft is charged in the outdoor unit at the
factory.
When the piping is longer than 164 ft, additional charging is necessary.
For the additional amount, see the table below.
Total piping
length [ft. (m)]
98 (30)
131 (40) 164 (50) 197 (60) 230 (70)
Additional
refrigerant
charge
36 type
None
None
None
7oz
(200g)
14oz
(400g)
0.21oz/ft
(20g/m)
24 type
None
7oz
(200g)
14oz
(400g)
1lbs 5oz
(600g)
1lbs 12oz
(800g)
18 type
None
7oz
(200g)
14oz
(400g)
-
-
CAUTION
When moving and installing the air conditioner, do not mix gas other than the specified
refrigerant (R410A) inside the refrigerant cycle.
When charging the refrigerant R410A, always use an electronic balance for refrigerant
charging (to measure the refrigerant by weight).
When charging the refrigerant, take into account the
slight change in the composition of the gas and liquid
phases, and always charge from the liquid phase side
whose composition is stable.
R410A
Gas
Liquid
Add refrigerant from the charging valve after the completion of the work.
If the units are further apart than the maximum pipe length, correct operation cannot
be guaranteed.
7. POWER
WARNING
The rated voltage of this product is 208/230 V A.C. 60 Hz.
Before turning on verify that the voltage is within the 187 V to 253 V range.
Always use a special branch circuit and install a special receptacle to supply power to
the air conditioner.
Use a special branch circuit breaker and receptacle matched to the capacity of the air
conditioner. (Install in accordance with standard.)
Perform wiring work in accordance with standards so that the air conditioner can be
operated safely and positively.
Install a leakage special branch circuit breaker in accordance with the related laws
and regulations and electric company standards.
CAUTION
The power source capacity must be the sum of the air conditioner current and the
current of other electrical appliances. When the current contracted capacity is insuf-
ficient, change the contracted capacity.
When the voltage is low and the air conditioner is difficult to start, contact the power
company the voltage raised.
8. BASE HEATER FORCED OFF FUNCTION
18, 24 type
The power to the Base heater can be cut off by changing the DIP switch setting.
[Factory setting]
To set the Base heater forced off function, set the DIP switch as follows;
9. TEST RUN
The test run method may be different for each indoor unit that is connected. Refer to the
installation instruction sheet included with each indoor unit.
CAUTION
Always turn on the power 12 hours prior to the start of the operation in order to ensure
compressor protection.
(1) Indoor unit
1
Is operation of each button on the remote control unit normal?
2
Does each lamp light normally?
3
Do the airflow direction louver operate normally?
4
Is the drain normal?
5
Is there any abnormal noise and vibration during operation?
(2) Outdoor unit
1
Is there any abnormal noise and vibration during operation?
2
Will noise, wind, or drain water from the unit disturb the neighbors?
3
Is there any gas leakage?
• Do not operate the air conditioner in the test running state for a long time.
• For the operation method, refer to the operating manual and perform operation check
9. 1. Outdoor unit LED
When a malfunction occurs in the outdoor unit, the LED on the circuit board lights to
indicate the error. Refer to the following table for the description of each error according
to the LED.
Error contents
LED1
LED2
LED3
LED4
Discharge temp. sensor error
● 2 times
–
–
–
Outdoor unit Heat Ex. outlet temp.
sensor error
● 3 times
–
–
–
Outdoor temp. sensor error
● 4 times
–
–
–
2-way valve temp. sensor error
(for Indoor unit A)
● 5 times
–
–
–
2-way valve temp. sensor error
(for Indoor unit B)
–
● 5 times
–
–
2-way valve temp. sensor error
(for Indoor unit C)
–
–
● 5 times
–
2-way valve temp. sensor error
(for Indoor unit D)
–
–
–
● 5 times
3-way valve temp. sensor error
(for Indoor unit A)
● 6 times
–
–
–
3-way valve temp. sensor error
(for Indoor unit B)
–
● 6 times
–
–
3-way valve temp. sensor error
(for Indoor unit C)
–
–
● 6 times
–
3-way valve temp. sensor error
(for Indoor unit D)
–
–
–
● 6 times
Compressor temp. sensor error
● 7 times
–
–
–
Heat sink temp. sensor error
● 8 times
–
–
–
High pressure switch 1 error
● 9 times
–
–
–
High pressure switch 2 error
● 10 times
–
–
–
Indoor unit capacity error
● 11 times
–
–
–
Trip detection
● 12 times
–
–
–
Compressor rotor position detection
error
● 13 times
–
–
–
Trip terminal L error
● 14 times
–
–
–
Outdoor unit fan motor error
● 15 times
–
–
–
Outdoor unit Heat Ex. middle temp.
sensor errer
● 16 times
–
–
–
Outdoor unit PCB microcomputer
communication error
● 17 times
–
–
–
Discharge temperature error
● 18 times
–
–
–
Compressor temperature error
● 19 times
–
–
–
4-way valve error
● 20 times
–
–
–
Outdoor unit PCB model information
error
● 21 times
–
–
–
Active filter error, PFC circuit error
● 22 times
–
–
–
● : Flashing – : Off
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