Mitsubishi Heavy Industries SRK100VNXWZRF Service Manual page 16

(b) Operation mode is changes when keep cooling and heating thermostat off 20 minutes and be satisfied following conditions. If
the setting temperature is changed with the remote control, the operation mode is judged immediately.
※It can not be changed to heating mode if outdoor air temperature is 28℃ or higher.
(c) When the unit is started again within one hour after the stop of automatic operation or when the automatic operation is
selected during heating, cooling or dehumidifying operation, the unit is operated in the previous operation mode.
(d) Setting temperature can be adjusted within the following range. There is the relationship as shown below between the
signals of the wireless remote control and the setting temperature.
Cooling
Setting
temperature
Heating
(12) Frost prevention control (During cooling or dehumidifying)
(a) Operating conditions
1) More than 8 minutes after starting the compressor
2) Indoor heat exchanger temperature (detected with Th2) is lower than 2.5 ℃ .
(b) Contents of frosting operation
Compressor ON/OFF command
Indoor fan motor
(c) Resetting condition
Indoor heat exchanger temperature (Th2) is higher than 8 ℃ .
(13) Dew prevention control (During cooling or dehumidifying)
( i ) Operating conditions
When the following conditions have been satisfied for more than 30 minutes after starting operation
1) Command compressor speed is 20 rps or higher.
2) Detected value of humidity is 68% or higher.
Keep operation
mode
Heating
SP － 1
Room air temperature (˚C)
Signals of wireless remote control (Display)
18 19 20 21
20 21 22 23
19 20 21 22
During this control
Forced stop Operation command
Depending on the air flow setting with the remote
control
15
- -
Cooling
SP: Setting temperature
SP ＋ 1
24
22 23 25
26
24 25 27
24
23 25 26
Reset
During
control
Indoor heat exchanger temperature (℃)
'22 • PAC-SM-422
Unit : ℃
26 27 28 29
28 29 30 31
27 28 29 30
Reset
2.5 8
30
32
31