Panasonic S-22KA1E5S, Руководство по обслуживанию

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13.4 Sub Cool Control
Sub Cool Control only will operate during cooling mode with below conditions are fulfilled :
- Cooling
Operation.
- Outdoor air temp > - 5°C.
- Outdoor high pressure sensor temp value > 27°C.
- Total Operating Indoor capacity > 1.6HP.
Due to Super heat is happened, Sub Cool Expansion Valve more opening if below condition happened :-
(Bypass Pipe Temp – Low Pressure Sensor Temp Value) – Target
Due to Present of Sub Cool, Sub Cool Expansion Valve less opening if below condition happened :-
(Hi Pressure Sensor Temp Value – SC Pipe Temp) – Target
Sub Cool Expansion Valve is full close when above conditions not fulfilled.
13.5 Deice Control
•
This control will operate for 1 cycle after accumulation time for heating (Compressor ON) under low outdoor
ambient environment as stated in table below:
Outdoor Air Temperature (°C) Heat exchanger temperature (°C) Acc. Time (minutes)
-5 to -7 75
-3 & above
-7 or below 45
-10 to -12 100
-3 to -10
-12 or below 55
-15 to -22 115
Below -10
-22 or below 85
•
During deice control, for indoor units in ON condition:
o
Indoor fan OFF
o
Power LED blinking
o
Expansion valve fully opened
•
During deice control, for indoor units in OFF condition:
o
Expansion valve fully opened
•
Deice control start condition:
T rigg e r
C ond ition
C on tro l
R eset
O N
O F F
Defrost
30 H z
Compressor
80 H z
60 H z
50 H z
30 H z
O N
O F F
4 Way Valve
O F F
Outdoor Fan
480 pulse (fu ll open )
Outdoor Expansion Valve
Gas Bypass Valve
O N
Liquid Bypass Valve
N orm al
480 pulse (full open )
Indoor Expansion Valve
Indoor Fan S top
1k
3k
DEF_Th
60 sec
Sub Cool
Expansion Valve
O N