13. Protection Control
13.1 Protection Control For All Operations
13.1.1
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.
13.1.2
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 10 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.
Cooling/Soft Dry (A)
Cooling/Soft Dry (B)
Cooling/Soft Dry (C)
Heating
•
The first 30 minutes of cooling operation, (A) will be applied.
13.1.3
IPM (Power transistor) Prevention Control
•
Overheating Prevention Control
When the IPM temperature rises to 100°C, compressor operation will stop immediately.
o
Compressor operation restarts after 3 minutes the temperature decreases to 95°C.
o
If this condition repeats continuously 4 times within 20 minutes, timer LED will be blinking ("F96" is indicated).
o
•
DC Peak Current Control
When electric current to IPM exceeds set value of 20.2 A, the compressor will stop operate. Then, operation
o
will restart after 3 minutes.
If the set value is exceeded again more than 30 seconds after the compressor starts, the operation will
o
restart after 1 minute.
If the set value exceeded again within 30 seconds after the compressor starts, the operation will restart after
o
2 minutes. If this condition repeats continuously for 7 times, all indoor and outdoor relays will be cut off, timer
LED will be blinking ("F99" is indicated).
Model
Operation Mode
40°C
39°C
Outdoor air temperature
CE9PK
X (A)
Y (A)
4.54
14.76
3.95
14.76
3.95
14.76
5.34
14.76
(C)
(B)
(A)
40
CE12PK
X (A)
Y (A)
6.20
14.76
5.64
14.76
5.64
14.76
8.18
14.76
39°C
38°C