SiUS28-902_a
Basic Control
Function
20
2.4
Cooling Operation Fan Control
In cooling operation with low outdoor air temperature, this control is used to provide the
adequate amount of circulation air with liquid pressure secured by high pressure control using
outdoor unit fan.
STEP
8
STEP 7
STEP 6
STEP 5
STEP 4
STEP 3
STEP 2
STEP 1
Pc>450 psi
Pc<261 psi
Pc>34
8
psi
Pc<261 psi
Pc>34
8
psi
Pc<261 psi
Pc>34
8
psi
Pc<261 psi
Pc>34
8
psi
Pc<261 psi
Pc>34
8
psi
Pc<261 psi
Pc>334 psi
Pc<261 psi
Pc>305 psi
STEP 0
Pc<261 psi
Pc>276 psi
8
50 rpm
715 rpm
5
8
0 rpm
445 rpm
360 rpm
2
8
5 rpm
400 rpm
250 rpm
0 rpm
M1F
8
15 rpm
6
8
0 rpm
545 rpm
410 rpm
325 rpm
250 rpm
0 rpm
0 rpm
0 rpm
M2F
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
STEP
8
STEP 2
STEP 1
STEP 0
Cooling
Fan Steps
8
50 rpm
250 rpm
8
15 rpm
M1F
0 rpm
M2F
STEP
8
STEP 1
Heating
There are 2 steps in heating operation.
Reference
Pc: HP press
u
re sensor detection
v
al
u
e
Summary of Contents for SkyAir FCQ18PVJU
Page 1: ...Split System Air Conditioners SkyAir Inverter R 410A Heat Pump 60Hz P Series SiUS28 902_a...
Page 44: ...Other Control SiUS28 902_a 37 Function...
Page 81: ...SiUS28 902_a Troubleshooting by Remote Controller Troubleshooting 74...
Page 185: ...SiUS28 902 Precautions for New Refrigerant R 410A Precautions for New Refrigerant R 410A 178...