Control Specification
SiEN12-710A
46
Function and Control
2.3 Controls at Mode Changing / Start-up
2.3.1 Preheating Operation
Outline
Operate the inverter in the open phase operation with the conditions including the preheating
command from the indoor, the outdoor air temperature and discharge pipe temperature.
Detail
Preheating ON Condition
$
When outdoor air temperature is below 10.5ºC and discharge pipe temperature is below
10.5ºC, inverter in open phase operation starts. (The power consumption of compressor
during preheat operation is 25 W.)
OFF Condition
$
When outdoor air temperature is higher than 12ºC or discharge pipe temperature is higher
than 12ºC, inverter in open phase operation stops.
2.3.2 Four Way Valve Switching
Outline
Heat Pump Only
During the heating operation current must be conducted and during cooling and defrosting
current must not be conducted. In order to eliminate the switching sound (as the four way valve
coil switches from ON to OFF) when the heating is stopped, the delay switch of the four way
valve must be carried out after the operation stopped.
Detail
The OFF delay of four way valve
Energize the coil for 150 sec after unit operation is stopped.
2.3.3 Four Way Valve Operation Compensation
Outline
Heat Pump Only
At the beginning of the operation as the four way valve is switched, acquire the differential
pressure required for activating the four way valve by having output the operating frequency,
which is more than a certain fixed frequency, for a certain fixed time.
Detail
Staring Conditions
1. When starting compressor for heating.
2. When the operating mode changes from the previous time.
3. When starting compressor for starting defrosting or resetting.
4. When starting compressor for the first time after the reset with the power is ON.
5. When starting compressor after operation stop by the cooling / heating mode change-over
malfunction.
Set the lower limit frequency to
Hz for 60 seconds with any conditions with 1 through 5
above.
2.3.4 3-Minute Standby
Prohibit to turn ON the compressor for 3 minutes after turning it off.
(Except when defrosting. (Only for Heat Pump Model).)
40 class
50 class
Cooling
56Hz
40Hz
Heating
68Hz
54Hz
Содержание 2MKS40FV1B
Страница 11: ...Introduction SiEN12 710A x ...
Страница 12: ...SiEN12 710A List of Functions 1 Part 1 List of Functions 1 Cooling Only 2 2 Heat Pump 4 ...
Страница 17: ...Heat Pump SiEN12 710A 6 List of Functions ...
Страница 25: ...Heat Pump SiEN12 710A 14 Specifications ...
Страница 33: ...Printed Circuit Board Connector Wiring Diagram SiEN12 710A 22 Printed Circuit Board Connector Wiring Diagram ...
Страница 75: ...Instruction SiEN12 710A 64 Operation Manual 2 3 Names of Parts FTKS 25 35 D FTXS 25 35 E Indoor unit ...
Страница 111: ...Instruction SiEN12 710A 100 Operation Manual ...
Страница 199: ...Wiring Diagrams SiEN12 710A 188 Appendix ...
Страница 203: ...SiEN12 710A iv Index ...