12.5 Cooling overload control (Cool)
•This control detect outdoor pipe temperature and perform the compressor frequency restriction during cooling operation.
12.6 Time Delay Safety Control (Restart Control)
•The compressor will not restart within three minutes after compressor is stopped.
•This control is not applicable if the power supply reset.
12.7 30 seconds Force Operation
•Once the compressor starts operation, it will not stop its operation for 30 seconds in order to cycle back compressor oil.
•However, it can be stopped using remote control or Auto OFF/ON button at indoor unit.
12.8 Total Current Control
•By referring to table below, during normal (default) operation, the running current refer to Hi values and during Power Save Mode, the running current refer to Lo values.
•When the outdoor unit total running current (AC) exceeds X value, compressor frequency will decrease.
•If the running current does not exceed X value for 5 seconds, compressor frequency will increase.
•However, if total outdoor unit running current exceeds Y value, compressor will be stopped immediately for 3 minutes.
Operation Mode |
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X (A) |
| Y (A) | ||
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Cooling/Soft Dry (A) | Hi | 14.0 |
| 17.5 |
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Lo | 7.8 |
| 17.5 | |
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Cooling/Soft Dry (B) | Hi | 14.0 |
| 17.5 |
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Lo | 7.8 |
| 17.5 | |
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12.9 IPM (power transistor) Protection Control
•Overheating Prevention Control
o If IPM temperature rises to 176°F, outdoor fan speed will be increased.
o When the IPM temperature rises to 203°F, compressor operation will stop immediately. o Compressor operation restarts when temperature decreases to 194°F.
o If IPM temperature detected less than
•DC Peak Current Control
o When IPM DC current exceeds set value of 30.0 ± 3.0 A, the compressor will stop.
o If the DC peak current detected within 30 seconds after operation starts, compressor will restart after 1 minute.
o If the DC peak current detected 30 seconds or more after operation starts, compressor will restart after 2 minute.
o Within 30 seconds after compressor restarts, if the DC peak current is exceeded set value continuously for 7 times, all indoor and outdoor relays will be cut off (“F99” is indicated).
•Error reset can be done by power supply reset.
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