Mitsubishi Electric PURY-P120Y(T)HMU-A, Service Handbook

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[
VII
Control ]
- 129 - HWE0803A GB
2. Function of the switch (Indoor unit)
(1) Dipswitches
1) SW1,3
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.
Switch Function
Function according to switch setting
OFF ON
Switch setting timing
OFF ON
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
- -
- - -
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 OFF 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
The setting depends on the
model and type.
The setting depends on the
model and type.
5
SCm setting 10 15
Disabled
Forced heating operation
at OA temp of 5 C or below