Control Specification
SiUS091601E
49
Functions and Control
3.10 Defrost Control
Outline
Defrosting is carried out by the cooling cycle (reverse cycle). The defrosting time or outdoor heat
exchanger temperature must be more than a certain value to finish defrosting.
Detail
Conditions for Starting Defrost
The starting conditions are determined with the outdoor temperature and the outdoor heat
exchanger temperature.
The system is in heating operation.
The compressor operates for 6 minutes.
More than
A
minutes (depending on the duration of the previous defrost control) of accumulated
time have passed since the start of the operation, or ending the previous defrosting.
Conditions for Canceling Defrost
The judgment is made with the outdoor heat exchanger temperature (
B
°C).
: The same value continues.
09 class
12 class
15 class
A
(minute)
20
20
25
B
(°C)
2 ~ 20
2 ~ 20
6 ~ 30
(°F)
35.6 ~ 68.0
35.6 ~ 68.0
42.8 ~ 86.0
C
(Hz)
64
40
48
D
(Hz)
64
40
42
E
(seconds)
40
40
60
F
(seconds)
60
60
60
G
(seconds)
510
510
340
H
(seconds)
50
50
90
J
(seconds)
8
8
5
K
(pulse)
400
400
450
L
(pulse)
300
300
300 ~ 450
M
(pulse)
350
350
200
Frequency
Compressor
Four way valve
Fan
ON
OFF
ON
OFF
ON
OFF
0 Hz
0 Hz
C
Hz
D
Hz
J
sec.
PI control
8 sec.
H
sec.
(R21661)
E
sec.
F
sec.
G
sec.
L
pulse zone
Electronic
expansion valve
opening
Normal
control
K
pulse
zone
M
pulse
zone
Starting
control
Summary of Contents for FVXS09NVJU
Page 12: ...SiUS091601E 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Page 15: ...SiUS091601E Specifications 4 Part 2 Specifications 1 Specifications 5 ...
Page 65: ...SiUS091601E Remote Controller 54 Part 5 Remote Controller 1 FTX Series 55 2 FVXS Series 57 ...
Page 144: ...Revision History Month Year Version Revised contents 02 2016 SiUS091601E First edition ...