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4-3. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)
• Description of the function:
With this function, once the operation mode is locked to either COOL/DRY
mode or HEAT mode, the air conditioner operates in that mode only.
* Changing the setting is required to activate this function. Please explain about
this function to your customers and ask them whether they want to use it.
[How to lock the operation mode]
1) Be sure to turn off the main power for the air conditioner before making the
setting.
2) Set the "3" of SW1 on the outdoor controller board to ON to enable this func-
tion.
3) To lock the operation mode in COOL/DRY mode, set the "4" of SW1 on the
outdoor controller board to OFF. To lock the operation in HEAT mode, set the
same switch to ON.
4) Turn on the main power for the air conditioner.
en
4-4. LOWERING THE OPERATION NOISE OF THE OUTDOOR UNIT
• Description of the function:
With this function, the operating noise of the outdoor unit can be lowered by reducing the operation load, for example, during nighttime in COOL mode. However,
please note that the cooling and heating capacity may lower if this function is activated.
* Changing the setting is required to activate this function. Please explain about this function to your customers and ask them whether they want to use it.
[How to lower the operating noise]
1) Be sure to turn off the main power for the air conditioner before making the
setting.
2) Set the "5" of SW1 on the outdoor controller board to ON to enable this func-
tion.
3) Turn on the main power for the air conditioner.
4-5. HOW TO SET LOW STANDBY POWER MODE
Use of the low standby power mode is recommended when none of the indoor
units listed in Table 1 is connected to the outdoor unit. The low standby power
mode can be set with the dip switch (SW1) and the jumper connector (SC751).
• Before turning on the breaker at first time, settings for dip switch (SW1) and
jumper connector (SC751) are necessary on the outdoor control P.C. board.
• It is recommended to activate the low standby power mode when none of the
indoor units listed in Table 1 is connected.
Note:
• Units come with low standby power mode deactivated as factory setting.
• When connecting one or more indoor units listed in Table 1, the outdoor unit
does not work at "activated low standby power mode".
• In the event that SC751 is missing, outdoor unit will not work.
• Activate the P.C. board setting by turning ON the breaker.
To activate low standby power mode:
Connect SC751 to CN750.
Set the 2 of SW1 to ON.
To deactivate low standby power mode:
Connect SC751 to CN751.
Set the 2 of SW1 to OFF.
Table 1: List of the target models
Type
Wall-mounted
1way-cassette
4way-cassette
Ceiling-Concealed
Ceiling-Suspended
Floor-Standing
10
SC751
SW1
ON
CN750
1 2 3 4 5 6
ON
CN751
1 2 3 4 5 6
Model name
MSZ-AP**VF
MLZ-KP**VF
SLZ-M**FA*
PEAD-M**JA(L)*
SEZ-M**DA(L)*
PCA-M**KA*
SFZ-M**VA*
LED
SW1
SW871
SW2
SW1
SW1
ON
ON
1 2 3 4 5 6
1 2 3 4 5 6
COOL/DRY
HEAT
SW1
ON
1 2 3 4 5 6
Lower the operating noise
CN750
CN751
MODE
Activated
Factory setting
Deactivated
SC751
SW871
SW1
ON
1 2 3 4 5 6
SW2
ON
1 2 3 4 5 6
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