Commercial Air Conditioner Model: AU182AFERA
AD182AMERA, AS182AVERA
8.2. Additional functions
8.2.1 The interval between compressor stop to startup again is 3 minutes, which can protection
compressor. If being electrified for the first time, compressor will start up only when the valve
opens to the normal operation angle.
8.2.2 TD high temperature protection
As long as the unit is running, the TD discharging overheat protection will work, but the discharging
sensor failure will alarm 4 minutes later after compressor starts up.
Measure sensor value: measure for 100 times (The program performs for one period needs 5 ms,
every time the system will take samples for 8 times, and make an order for them, taking out 2
average values in the middle, and make an average value.).
TD（℃）
Abnormal stop
120
quick reduce FQY(1HZ/s)
112
slow reduce FQY(1HZ/10s)
108
FQY no change
105
rise FQY(1HZ/10s)
98
rise FQY(1HZ/1s)
TD>120℃ and keeps for 20 seconds, discharging temperature over high protection will work, the
unit will stop and alarm(outdoor indicates, not sending to indoor). If TD>98℃, the unit will resume. If
within 30 minutes, the TD overhigh protection occurs 3 times, the unit will stop and alarm (sending to
indoor), it can not resume automatically.
8.2.3 In heating indoor TC high temperature protection
Indoor heat exchanger temperature will check the indoor coil temperature, if it is over 55℃, the unit
will reduce the compressor motor speed to perform the indoor heat exchanger temperature overhigh
protection. If it is below 48℃, the unit will resume to be normal.
TC
P reduce slowly
55
Q remaining
52
48 R rise slowly
P: reduce at the speed of 1Hz/10s
Q: remain the previous value
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