Technical Information
ƴƴ
c. Frequency Limited
• If [T heating overload frequency limited temperature] ≤ T inner pipe < [T heating overload frequency reducing
temperature at normal speed], you should limit the frequency raising of the compressor.
d. Reducing Frequency at Normal Speed and Stopping Machine
• If [T heating overload frequency reducing temperature at normal speed] ≤ T inner pipe < [T heating overload
frequency reducing temperature at high speed], you should adjust the compressor frequency by reducing 8Hz/90
seconds until the lower limit. After it was running 90 seconds at the lower limit, if T heating overload frequency
reducing temperature at normal speed ≤ T inner pipe, then overload protects machine stopping.
e. Reducing Frequency at High Speed and Power Turn-off
• If [T heating overload frequency reducing temperature at high speed] ≤ T inner pipe < [T heating overload power
turn-off temperature], you should adjust the compressor frequency by reducing 30Hz/90 seconds until the lower
limit. After it was running 90 seconds at the lower limit, if T heating overload frequency reducing temperature at
normal speed ≤ T outer pipe, then cooling overload protects machine stopping.
f. Power Turn-off
• If [T heating overload power turn-off temperature] ≤ T inner pipe, then overload protects machine stopping. If T
inner pipe T heating overload frequency limited temperature and the compressor has been stopped working for 3
minutes, the machine should be allowed to operate.
• If the overload protection power turn-off continuously occurs six times, it should not be resumed automatically and
you should press the ON/OFF button to resume if the fault keeps on. During the process of running, if the run time
of compressor exceeds the T overload protection times zero clearing time, the times of overload protection power
turn-off should be cleared to recount. The mode of stopping the machine or transferring to supply air will clear the
trouble times immediately (if the trouble cannot be resumed, transferring mode will not clear it). Protective function
for discharge temperature of compressor.
g. Starting Estimation
• After the compressor starts working for 180 seconds, if T discharge < discharge limited temperature (the
temperature of hysteresis is 35.6ºF), the machine is allowed to start, otherwise it should not be started, and should
be stopped to treat according to the discharge temperature. The machine should be stopped or transferred to
supply air, the trouble should be cleared immediately, and the protection times are not counted.
h. Frequency Limited
• If [T limited frequency temperature during discharging] ≤ T discharge < [T frequency reducing temperature at normal
speed during discharging], you should limit the frequency raising of the compressor.
i. Reducing Frequency at Normal Speed and Stopping Machine
• If [T frequency reducing temperature at normal speed during discharging] ≤ T discharge < [T frequency reducing
temperature at high speed during discharging], you should adjust the compressor frequency by reducing
8Hz/90 seconds until the lower limit. After it was running 90 seconds at the lower limit, if {T frequency reducing
temperature at normal speed during discharging] ≤ T discharge, you should discharge to protect machine stopping.
j. Reducing Frequency at High Speed and Power Turn-off
• If [T frequency reducing temperature at high speed during discharging] ≤ T discharge < [T stop temperature during
discharging], you should adjust the compressor frequency by reducing 30Hz/90 seconds until the lower limit.
After it was running 90 seconds at the lower limit, if {T frequency reducing temperature at normal speed during
discharging] ≤ T discharge, you should discharge to protect machine stopping.
k. Power Turn-off
• If [T power turn-off temperature during discharging] ≤ T discharge, you should discharge to protect machine
stopping. If [T discharge] < [T limited frequency temperature during discharging] and the compressor has been
stopped for 3 minutes, the machine should be allowed to operate.
• If the discharging temperature protection of compressor continuously occurs 6 times, it should not be resumed
automatically and you should press the ON/OFF button to resume. During the process of running, if the running
time of compressor exceeds the T protection times clearing of discharge, the discharge protection is cleared to
recount. Stopped or transferred to supply air mode will clear the trouble times immediately (if the trouble protection
cannot be resumed, mode transferring also will not clear it.).
l. Frequency Limited
• If [I limited frequency when overcurrent] ≤ I AC electric current < [I frequency reducing when overcurrent], you
should limit the frequency raising of compressor.
m.Reducing Frequency
• If [I frequency reducing when overcurrent] ≤ [I AC electric current I power turn-off when overcurrent], you should
reduce the compressor frequency until the lower limit or exit the frequency reducing condition.
n. Power Turn-Off
• If [I power turn-off machine when overcurrent] ≤ [I AC electric current], you should carry out the overcurrent
stopping protection. If I AC electric current < [T limited frequency when overcurrent] and the compressor and the
compressor has been stopped for 3 minutes, the machine should be allowed to operate.
Содержание AWH18QD-D3DNA1G/O
Страница 2: ......