Daikin FTKS50BVMB, Service Manual

Page: 113 / 456

Basic Control SiEN18-622
100 Function
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.
Furthermore, when outdoor temperature
≥
20°C, the compressor will run in Step 7 or higher.
When outdoor temperature
≥
18°C, it will run in Step 5 or higher.
When outdoor temperature
≥
12°C, it will run in Step 1 or higher.
8 50 rpm
715 rpm
5 8 0 rpm
445 rpm
3 60 rpm
2 8 5 rpm
400 rpm
250 rpm
0 rpm
M1F
8 15 rpm
6 8 0 rpm
545 rpm
410 rpm
3 25 rpm
250 rpm
0 rpm
0 rpm
0 rpm
M2F
S TEP 3
S TEP4
S TEP5
S TEP6
S TEP7
S TEP 8
S TEP2
S TEP1
S TEP0
Cooling
F a n S tep s
Upper limit of f a n
revol u tion s : S tep 8
Upper limit of o u tdoor u nit
f a n revol u tion s
S tep 7
-1 s tep on
o u tdoor u nit f a n
+1 s tep on
o u tdoor u nit f a n
Pc <2.75MP a
PI control
Pc > 3 .24MP a
L a p s e of 20 s ec.
PI control
PI control
L a p s e of 20 s ec.
Hold the
c u rrent s tep on
o u tdoor u nit f a n
Pc: HP pre ssu re s en s or detection v a l u e