Daikin FCQ18PVJU - Cooling Operation Fan Control

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>348 psi
Pc<261 psi Pc>348 psi
Pc<261 psi Pc>348 psi
Pc<261 psi Pc>348 psi
Pc<261 psi Pc>348 psi
Pc<261 psi Pc>334 psi
Pc<261 psi Pc>305 psi
STEP 0
Pc<261 psi Pc>276 psi
850 rpm
715 rpm
580rpm
445 rpm
360 rpm
285rpm
400 rpm
250 rpm
0rpm
M1F
815 rpm
680rpm
545 rpm
410 rpm
325 rpm
250 rpm
0rpm
0rpm
0rpm
M2F
STEP 3
STEP 4
STEP 5
STEP 6
STEP 7
STEP 8
STEP 2
STEP 1
STEP 0
Cooling
Fan Steps
850 rpm
250 rpm
815 rpm
M1F
0rpm
M2F
STEP 8
STEP 1
Heating
There are 2 steps in heating operation.
Reference
Pc: HP pressure sensor detection value