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11. Protection Control
11.1 Restart Control (Time Delay Safety Control)
• When the thermo-off temperature is reach during Cooling operation, the compressor stops for 3 minutes
(minimum) before resume operation.
• When the thermo-off temperature is reach during Soft Dry operation, the compressor stops for 6 minutes
(minimum) before resume operation.
• 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.
11.2 7 minutes Time Save Control
z
The compressor will automatically operate if it has stopped for 7 minutes even if the room temperature Is not
reached the Thermo-ON point.
reached the Thermo-ON point.
z
This phenomenon is to prevent the room humidity raising.
11.3 60 seconds Forced Operation
z
Once the air conditioner is turned on, the compressor will not stop within 60 seconds in normal operation even if
the intake air temperature has reached the thermo-off point. However, forced stop by pressing the OFF/ON
operation button at the remote control is permitted.
the intake air temperature has reached the thermo-off point. However, forced stop by pressing the OFF/ON
operation button at the remote control is permitted.
z
This phenomenon is to allow the refrigerant oil run in a full cycle and return back to the outdoor unit.
11.4 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.
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.
11.5 Anti-Freezing Control
z
If the temperature of evaporator is lower than 2℃ continuously for 4 minutes, the compressor will cease to
prevent the evaporator from freezing. Fan Speed setting will not be changed.
prevent the evaporator from freezing. Fan Speed setting will not be changed.
z
When temperature of evaporator reach 10℃, compressor will restart.
z
During Cooling and soft Dry operation, the Time Delay Safety Control will be applied if the recovery time is too
short.
short.
11.6 Compressor Reverse Rotation Protection Control
If the compressor has been continuously running for 5 minutes or longer, and the difference of temperature between
intake air and evaporator is continuously lower than 2.5℃ (cooling mode) /5 ℃(heating mode) or below for 2 minutes,
the compressor will stop, and then restart 3 minutes later. (Time Delay Safety Control is effective.)
intake air and evaporator is continuously lower than 2.5℃ (cooling mode) /5 ℃(heating mode) or below for 2 minutes,
the compressor will stop, and then restart 3 minutes later. (Time Delay Safety Control is effective.)
△ T= Intake air temperature – Indoor heat exchanger temperature
Compressor runs ≥ 5 min
△ T≤ 2.5℃ for 2 min (Cooling mode)
△ T≤ 5℃ for 2 min(heating mode)
△ T≤ 2.5℃ for 2 min (Cooling mode)
△ T≤ 5℃ for 2 min(heating mode)
Compressor stops
Compressor restarts 3 minutes later
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