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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.
SW1
ON
1 2 3 4 5 6
Lower the operating noise
[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.
4-3. LOCKING THE OPERATION MODE OF THE AIR CONDITIONER (COOL, DRY, HEAT)
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.
SW1
ON
1 2 3 4 5 6
SW1
ON
1 2 3 4 5 6
LED
SW1
SW871
SW2
4-5. CHANGING THE AMPERE LIMIT
• Description of the function:
With this function, the amount of current that flows in the outdoor unit can be
changed.
Note:
Use this function only when the amount of current exceeds the allowed value.
[How to change the ampere limit]
1) Be sure to turn off the main power for the air conditioner before making the
setting.
2) Make the setting referring to the table below.
3) Turn on the main power for the air conditioner.
SW2
MXZ-2F53VFHZ
ON
1 2 3 4 5 6
13.6 A
(Factory setting)
ON
1 2 3 4 5 6
18.4 A
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