60
Voltage protection
Protection against AC input over-voltage/under-voltage
1.Conditions for protection against AC input over-voltage/under-voltage:
If the input AC voltage is greater than
“protective over-voltage value” or less than “protective
under-voltage value
” for five seconds, over-voltage/under-voltage protection tarts.
2.Protection actions against AC input over-voltage/under-voltage
The system stops operation.
3. Conditions for ending AC input over-voltage/under-voltage:
If the input AC voltage is lower than
“the protective over-voltage value” -10V, or higher than “the
protective under-voltage value
” +10V, the over-voltage/under-voltage protection will be released.
Current protection:
1.Protection against over-current
Conditions for over-current protection: if the current is equal to or greater than
“current value for starting
the refrigeration current protection (E2 value)
” for six seconds, over-current protection starts.
Protection actions against over-current: indoor display screen and outdoor indicator give indications, the
compressor and outdoor fan stop, but indoor fan runs normally.
Condition for ending over-current protection: when the current drops below
“current value for releasing
the refrigeration current protection (E2 value)
”, over-current protection will be released.
2.Frequency decreasing for over-current
Conditions for over-current
frequency decreasing
: if the current is equal to or greater than
“current value
for starting the refrigeration current protective frequency decreasing (E2 value)
”, over-current
frequency
decreasing
starts.
Over-current
frequency decreasing
actions: the compressor will decrease frequency at rate of (E2
value)Hz/S. The indoor and outdoor fans run.
Conditions for ending over-current
frequency decreasing
: when the current drops below
“current value
for starting the refrigeration current protective prohibition of frequency rising (E2 value)
”, over-current
under-clocking will be released.
3.Prohibition of frequency increasing of compressor exhausting
Conditions for prohibition of frequency rising of compressor discharge
Condition 1: in the case of frequency decreasing of compressor discharge, the discharge temperature of
the compressor drops below X4
℃
.
Condition 2: in normal operation, the discharge temperature of compressor reaches X5
℃
.
Either of the above two conditions is met, prohibition of frequency rising of compressor discharge
begins.
Actions relates to prohibition of frequency rising of compressor discharge: the frequency of compressor
maintains at the current level, which may decrease as the case requires while cannot rise. The indoor and
outdoor fans run.
Summary of Contents for AS-10UR4SYDTDI
Page 6: ...6 Gross Weight Kg Indoor Unit 9 5 Outdoor Unit 24...
Page 9: ...9 Gross Weight Kg Indoor Unit 9 5 Outdoor Unit 25...
Page 21: ...21...
Page 22: ...22 Outdoor Model...
