58
2. Stop
3. Defrosting prohibition
time
Control modes
Remarks
Control details
Defrosting prohibition time (T1 and T3) are decided by the previous defrosting
operation time (t2).
• Prohibition time table for ordinary region
• Prohibition time table for high humidity region
• Others
4. Defrosting prohibition
time
4-1. Requirements for starting
Compulsory defrosting operation will be conducted if all items below are
satisfied when SW1-1 (OFF
➜
ON) is detected during HEAT operation.
(Conditions)
a. The compressor is operating.
b. 10 minutes have passed since the compressor started or the last defrosting
operation was conducted.
c. The outdoor liquid pipe temperature is less than 8
:
.
4-2. Requirements for ending
Same conditions as the above ending conditions of normal defrosting
2-2. Actuator at the end of defrosting operation
Actuator will be activated by the following procedure if any of the above
conditions except d & e is detected.
1
Start the outdoor fan.
2
Let the compressor operation frequency down to 30Hz from the defrosting
operation frequency.
3
Stop the compressor for 1 minute when the compressor operation frequency
becomes 30Hz.
After
1
to
3
are completed, set the compressor operation frequency to the
normal (start-up pattern A).
Previous operation time
t2
[
7 minutes
7 < t2
[
15 minutes
50 minutes
20 minutes
20 minutes
20 minutes
T1
T3
Prohibition time
Previous operation time
t2
[
3 minutes
3 < t2
[
7 minutes
7 < t2
[
10 minutes
10 < t2
[
15 minutes
t2 = 15 minutes
100 minutes
60 minutes
50 minutes
30 minutes
20 minutes
30 minutes
20 minutes
20 minutes
20 minutes
20 minutes
T1
T3
Prohibition time
Operation mode has been changed to the other mode
except HEAT during defrosting operation.
Protection devices have worked during defrosting operation.
Initial prohibition time when power is reset.
40 minutes
10 minutes
40 minutes
40 minutes
10 minutes
40 minutes
T1
T3
Prohibition time
Previous operation time
From the previous page.
OCT04A-2.qxp 04.9.29 9:15 AM Page 58
