Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 827

(2) Operations of major functional items under each operation mode
Operation mode
Thermostat ON Thermostat OFF
Functional item
Remote controller
Indoor unit fan
command
Indoor unit electronic Selected frequency
adaptation
expansion valve
Compressor 1 (Inverter)
Compressor 2
(Without inverter)
Outdoor unit fan (FMo-1)
Outdoor unit fan (FMo-2)
4-way valve
Solenoid valve SV1
(Compressor cooling)
Solenoid valve SV2
(Compressor cooling)
Notes(1) Compressor 2 is available on FDCJ224, 280, FDCP224 and 280 only.
: ON, ×: OFF, / ×: ON or OFF
(2)
(3) This applies to when the jumper wire is shorted (state at shipping). It is OFF if the connection is open.
(4) It is fully open for one minute when the compressor begins operation.
(3) Cooling operation
(a) Cooling
1) If the sum of selected and required frequencies is not larger than the maximum frequency, the required frequencies listed in the
following table apply. If the sum of required frequencies is larger than the maximum frequency, the required frequencies divided
proportionally apply.
Frequency bands for indoor unit models
Model (Indoor)
Category
22 model 28 model 36 model 45 model 56 model 71 model 90 model 112 model 140 model
Required frequency (Hz)
10 ~ 15
Selected frequency (Hz)
5 ~ 15
Notes (1) Frequency during cooling is 45 Hz.
(2) The required frequency is counted in the unit of 5 Hz and the selected frequency in the unit of 1 Hz.
Frequency bands for outdoor unit models
Item
Compressor's total operation frequency (Hz)
Note (1) Frequency is controlled in the unit of 5 Hz.
Compressor capacity control (only for 224, 280 models)
Model
FDCJ224HKXE2B
FDCP224HKXE2B
FDCJ280HKXE2B
FDCP280HKXE2B
Note (1) In case when CM1 only changes from ON to the CM2 ON range, CM1 is reduced at 40 Hz and then CM2 is turned ON.
Cooling
Fan
Complete stop
Remote controller Remote controller
command command
Fully closed Fully closed
×
×
/ ×
× × /
/ ×
× × /
/ ×
×
×
×
/ ×
×
/ ×
All series
10 ~ 20 10 ~ 25 10 ~ 25 15 ~ 30
5 ~ 20 5 ~ 25 5~ 25 5 ~ 30
Capacity 140 model
20 ~ 80
Fk (Hz) condition
Fk < 70Hz
Fk ≥ 70Hz
Fk < 80Hz
Fk ≥ 80Hz
Heating
Thermostat ON Thermostat OFF
Remote controller Intermittent opera-
command tion
(3)
Selected frequency (4)
Fully closed
adaptation
×
×
/ ×
/ ×
/ ×
×
×
×
/ ×
×
/ ×
15 ~ 40 15 ~ 50 35 ~ 60
5 ~ 40 5 ~ 50 5 ~ 60
224 model 280 model
20 ~ 120 20 ~ 130
CM1 (Inverter)
25 ~ 90Hz
40 ~ 100Hz
25 ~ 95Hz
40 ~ 100Hz
FDC-HKX
Dehumidifying
Defrosting
→ ×
Selected frequency
Fully opened
adaptation
×
×
× → ×
× → ×
→ ×
× / ×
× / ×
35 ~ 70
5 ~ 70
CM (Without inverter)
OFF
ON
OFF
ON
/ ×
/ ×
/ ×
/ ×
/ ×
×
/ ×
/ ×
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