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2. SYSTEM PROTECTION DEVICES
The air conditioner is equipped with complete safety protections to ensure safe
operation of air conditioner.
2.1 Safety protections of Cooling operation
Auto restart Feature with backup memory.
When the power failure is happened during system operation, the micom of printed circuit board
will memorize the operation settings. After the power is recovered, the system operates
automatically ( without remote control ) after compressor time delay, according to the previous
operation settings.
3 (Three) minutes time delay between compressor turning off and turning on.
Frost prevention of indoor coil of indoor unit when the system is operating in cool mode at low
ambient temperature with excessive dirt on the indoor coil and / or clogged air filters.
Complete Self-diagnostic function to detect malfunctions.
When the system is on and in a malfunction, the malfunction will be detected through leds
located on the indoor unit display. Leds status refer to malfunction reason.
2.2 Safety protections of Heating operation
Auto restart Feature with backup memory.
When the power failure is happened during system operation, the micom of printed circuit board
will memorize the operation setting. After the power is recovered, the system operates
automatically ( without remote control ) after compressor time delay, according to the previous
operation settings.
3 (Three) minutes time delay between compressor turning off and turning on.
Frost prevention of indoor coil of indoor unit when the system is operating in cool mode at low
ambient temperature with excessive dirt on the indoor coil and / or clogged air filters.
Cold draft protection when the system is operating in heat mode to prevent cold air from blowing
into the space to be air-conditioned and also to speed up the heating.
Defrost protection of outdoor coil of outdoor unit when the system is operating in heat mode at
very low ambient temperatures.
High temperature protection of indoor coil of indoor unit when the system is operating in heat
mode at high ambient temperature.
Complete Self-diagnostic function to detect malfunctions.
When the system is on and in a malfunction, the malfunction will be detected through leds
located on the indoor unit display. Leds status refer to malfunction reason.
