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Control Specification
SiUS041501E
43
Function 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).
09 class
12 class
18 class
RXN24NMVJU
RX24NMVJU
A
(minute)
20 ~ 25
20 ~ 25
25
25
B
(°C)
2 ~ 20
2 ~ 20
6 ~ 30
6 ~ 30
(°F)
35.6 ~ 68.0
35.6 ~ 68.0
42.8 ~ 86.0
42.8 ~ 86.0
C
(Hz)
64
64
48
48
D
(Hz)
64
64
42
42
E
(seconds)
40
40
60
60
F
(seconds)
60
60
60
60
G
(seconds)
630
630
490
490
H
(seconds)
40
50
60
90
J
(seconds)
8
8
5
5
K
(pulse)
400
400
450
450
L
(pulse)
300
300
300 ~ 450
300 ~ 450
M
(pulse)
200
350
200
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 FTKN09NMVJU
Page 12: ...SiUS041501E 1 List of Functions Part 1 List of Functions 1 Functions 2...
Page 59: ...SiUS041501E Remote Controller 48 Part 5 Remote Controller 1 Cooling Only 49 2 Heat Pump 51...
Page 65: ...SiUS041501E Service Diagnosis 54 5 13 Power Module Check 100...
Page 132: ...Revision History Month Year Version Revised contents 03 2015 SiUS041501E First edition...