Mitsubishi Daiya SRK50HA User Manual page 23

(15) Forced defrosting (Heat pump type only)
To test forced defrosting in the operation test mode, the unit may be operated once in the forced defrost mode as shown below.
¡Temporarily turn off the power source and then perform the following operation using the remote controller within 20 seconds
after the power is turned back on.
: Run
Operation
Fan speed : Low
Operation setting : Heating
Temperature setting : 19
¡When the remote control operation is performed, forced defrosting will start for one minute after the three minute timer opera-
tion ends. After that defrost thermostat(23DH) will either turn OFF or the operation will stop after 10 minutes.
(16) High-pressure control (Heat pump type only)
The indoor heat exchanger thermistor detection temperature controls the indoor fan and compressor.
¡ When the indoor heat exchanger
temperature Is
Indoor fan
Set fan
Speed
Indoor heat exchanger temp. (˚C)
Note (1) Value in ( ) indicates 40 model.
(17) Three-minute forced operation
When the compressor begins operating the thermal operation is not effective for 3 minutes, so operation continues as is in the
operation mode. (After 3 minutes has passed the thermal operation is effective.)
However, stopping the compressor via a stop signal or protection control has priority.
(18) Heating operation overload protection (Heat pump type only)
During heating operation in overload condition (room outside air temperature is considerably high), in order to protect the unit, the
outdoor fan is controlled by the pressure switch (63H).
(a) Outdoor fan control
High pressures are prevented and extreme heat absorption controlled by turning the outdoor fan ON and OFF with the
pressure switch.
(19) High power operation (Remote controller "HI POWER" button on) [50, 56 model only]
The indoor unit fan rotates at speed 6 for 15 minutes, and carries out continuous cooling, heating and Fan.
(20) Economy operation (Remote controller "ECONO" button on) [50, 56 model only]
(a) Cooling economy operation
The set temperature is raised by 2ºC and the unit is operated in cooling mode.
(b) Thermal dry economy operation
Thermal dry operation carried out at 2ºC higher than the set temperature.
Air flow
Timer switch : On timer (
On time
61˚C
Speed 5(4)
50 61
Outdoor fan
40: 2.02(20.5)
50,56: 1.86(19.0)
High pressure MPa (kgf/cm
: Swing
)
: 3H
¡ When the indoor heat exchanger
temperature Is 64˚C
ON
Compressor
50
Indoor heat exchanger temp. (˚C)
ON
OFF
2.41(24.5)
2 )
OFF
64
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