Commercial Air Conditioner
Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
and LED1 are black out.
1.9 Time shorting function
Time shorting function: If the time shorting port is in short circuit after electrifying CJ601, the unit will
perform a 1/60 time shorting control.
1.10 Additional functions
1.10.1 The interval between compressor stop and 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.
1.10.2 Ttc high temperature protection
Ttc discharg temp. over-heat protection can be executed once the unit is ON, but the discharge temp.
sensor can only alarm after the compressor has started up for 4 minutes.
If Ttc>=115 keeping for 10s, the discharge temp. over-heat protection excutes and unit stops,
resumable after quit the protection. If in 60 minutes the protection occurs for 3 times, the failure can be
sent to indoor unit.
1.10.3 In heating indoor Tc high temperature protection
Indoor heat exchanger temp. sensor 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 temp. overhigh protection.
If it is below 48℃, the unit will resume to be normal control.
P: reduce at the speed of 1Hz/10s
Q: remain the previous value
R: rise at the speed of 1Hz/10s
TC
P reduce slowly
55℃
Q remaining
52℃
R rise slowly
48℃
1.10.4 Over current protection:
Discharging temp. Ttc
quick reduce FQY 2HZ/S
quick reduce FQY 1HZ/S
slow reduce FQY 1HZ/10S
keep FQY
slow rise FQY 1HZ/10S
114℃
111℃
108℃
105℃
95℃
90℃
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