Mitsubishi Electric R410A, Service Handbook

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[5-1 Dipswitch Functions and Factory Settings ]
- 91 - HWE14080 GB
5
Control
5-1-2 Indoor Unit Switch Functions and Factory Settings
(1) Dipswitches
1) SW1,3
The switch setting may vary depending on the indoor unit's type. Refer to relevant Service Handbook for details.
(2) Address switch
Actual indoor unit address setting varies in different systems. Refer to the installation manual for the outdoor unit for details
on how to make the address setting.
Each address is set with a combination of the settings for the 10's digit and 1's digit.
(Example)
When setting the address to "3", set the 1's digit to 3, and the 10's digit to 0.
When setting the address to "25", set the 1's digit to 5, and the 10's digit to 2.
SW3-1
OFF
OFF
OFF
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
Very Low
Low
Preset speed
Preset speed
Preset speed
Stop
Stop
Stop Stop
Switch setting
SW1-7 SW1-8 Heating Cooling
Cooling-only/heat pump
Heat pump
Cooling-only
Heat pump
Fan speed during Thermo-OFF
Note 2. If both SW1-7 and SW1-8 are set to ON, the fan remains stopped during heating Thermo-OFF.
To prevent incorrect temperature detection due to a build-up of warm air around the indoor unit, use the built-in temperature sensor on the remote controller (SW1-1)
instead of the one on the indoor unit inlet thermistor.
Note 3. By setting SW3-1, SW1-7, and SW1-8 to a certain configuration, the fan can be set to remain stopped during cooling Thermo-OFF. See the table below for details.
Note 4. The settings that are configured from the remote controller will automatically be stored on the outdoor unit. The stored settings will automatically be restored when the
indoor unit control board is replaced.
Switch Function
Function according to switch setting
OFF ON
Switch setting timing
Notes
SW1
SW3
1
2
3
4
5
6
7
8
9
10
9
10
1
2
3
4
5
6
7
8
Room temperature
detection position
Clogged filter detection
Filter check reminder time setting
Outside air intake
Remote display option
Humidifier control
Self-recovery after power failure
Fan speed setting for
Heating Thermo-OFF
Power source start-stop
Unit model selection
Louver
Vane
Vane swing function
-
Vane angle limit setting
for cooling operation
Initial vane position
Heating 4°C [7.2°F] up
Automatic LEV value
conversion function
Indoor unit inlet
100h
Disabled
Fan output
2500h
Enabled
Thermo-ON signal
Built-in sensor on
the remote controller
Available
During heating operation
According to the
SW1-7 setting
Heat pump
Always on while in the heating mode
Fan speed setting for
Heating Thermo-OFF
Very Low Low
Preset speed
Cooling only
Enabled
Enabled
Disabled
Disabled Enabled
Enabled
Not available Available
Not available Available
Not available
Not available
Available
Not available
Available
Not available Available
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Downblow B,C Horizontal
While the unit is stopped
(Remote controller OFF)
Always set to OFF on PKFY-AM model units
Set to ON (built-in sensor on the remote controller)
on All Fresh (PEFY-VMH-F) model units
Applicable to All Fresh model units
(PEFY-VMH-F) only
Applicable to All Fresh model units
(PEFY-VMH-F) only
Always set to OFF on PKFY-VAM model units
PLFY-VLMD model only
Set to ON on floor-standing
(PFFY) type units
Note 1. Settings in the shaded areas are factory settings.(Refer to the table below for the factory setting of the switches whose factory settings are not indicated by the shaded cells.)
Always set to Downblow B or C on
PKFY-VAM model units
Disabled
SHm setting 2°C [3.6°F]
10°C [18°F]
5°C [9°F]
15°C [27°F]
The setting depends on the
model and type.
The setting depends on the
model and type.
SCm setting
Disabled
Forced heating operation
at OA temp of 5 C or below
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