13. Protection Control
13.1 Restart Control (Time Delay Safety Control)
•
The compressor will not turn on within 3 minutes from the moment operation stops, although the unit is turned on
again by pressing OFF/ON button at remote control within this period.
•
This control is not applicable if the power supply is cut off and on again.
•
This phenomenon is to balance the pressure inside the refrigerant cycle.
13.2 30 Seconds Forced Operation
•
Once the air conditioner is turned on, the compressor will not stop within 30 seconds in a normal operation
although the intake air temperature has reached the thermo-off temperature. However, force stop by pressing the
OFF/ON button at the remote control is permitted or the Auto OFF/ON button at indoor unit.
•
The reason for the compressor to force operation for minimum 30 seconds is to allow the refrigerant oil run in a
full cycle and return back to the outdoor unit.
13.3 Total Running Current Control
•
When the outdoor unit total running current (AC) exceeds X value, the frequency instructed for compressor
operation will be decreased.
•
If the running current does not exceed X value for 5 seconds, the frequency instructed will be increased.
•
However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3
minutes.
Model
Operation Mode
X (A)
Cooling / Soft Dry (A)
5.6
Cooling / Soft Dry (B)
5.2
•
The first 30 minutes of cooling operation, (A) will be applied.
13.4 IPM (Power Transistor) Prevention Control
•
DC Peak Current Control
When electric current to IPM exceeds set value of 13.2A (S10PK), 13.1A (S13PK), 17.1A (S15, 18PK),
o
27.7A (S24PK) within 30 seconds, the compressor will stop operation. Then, operation will restart after 1
minute.
For second occurrence onwards, if the set value exceeds again within 30 seconds, the compressor will stop
o
operation. Then, operation will restart after 2 minutes.
If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer LED will
o
be blinking "("F99" is indicated).
•
Overheating prevention
When the IPM temperature raises to 120°C the compressor will stop immediately.
o
Compressor operation restarts after 3 minutes the temperature decreases to 115°C.
o
If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking ("F96" is indicated).
o
S10***
S13***
Y (A)
X (A)
15.0
7.1
15.0
6.6
38.5°C
Outdoor air temperature
S15***
Y (A)
X (A)
Y (A)
15.0
8.3
15.0
15.0
7.7
15.0
(B)
37.5°C
(A)
93
S18***
X (A)
Y (A)
X (A)
10.8
15.0
11.8
10.3
15.0
11.3
S24***
Y (A)
19.0
19.0