14
ENGLISH
■
Electrical Work
■
Defrosting operation (Available for heating only)
1. Condition to start defrosting: Units will switch to defrosting
mode when either of the following conditions is met.
a. Unit has been running under T3<0ºC for 40
minutes and T3<-3ºC for 3 minutes.
b. Unit has been running at high temperature
protection mode* for 90 minute. (*High temperature
protection mode: when coil temperature of indoor
unit reaches 55°C, outdoor unit will turn off external
unit fan but still keep compressor running).
2. Condition to stop defrosting: Units will switch back to
heating mode when either of the following conditions
is met.
a. Unit has been running at defrosting mode for 10
minutes.
b. T3>20
ºC
Remark:
T3 is coil temperature of outdoor units.
0
-1
-2
-3
-4
-5
1
2
0
5
10 15 20 25 30 35 40 45 50
T3 (°C)
3 min
40 min
Heating mode
Defrosting mode
Time
Elapsed
(min)
Starting Defrosting Mode under condition a.
NOTE
The supply volyage must be consistent with the rate voltage of the air conditioner.
Wiring size
Switch and
Fuse rating
Power Source
Model
f
f
f
f
f
1.0 mm
2
10A
220-240V ~ 50Hz
220-230V ~ 60Hz
7000-9000 Btu/h
f
f
f
f
f
1.5 mm
2
16A
12000 Btu/h
f
f
f
f
f
2.5 mm
2
25A
18000 Btu/h
32A
24000 Btu/h
220-240V ~ 50Hz
220-230V ~ 60Hz
220-240V ~ 50Hz
220-230V ~ 60Hz
220-240V ~ 50Hz
220-230V ~ 60Hz
J199.pmd
31/03/2005, 9:54 PM
14
