Protective Function For Discharge Temperature Of Compressor - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

Product Introduction
Basic Functions - 18K & 24K 230 volt
1. Frequency limited
If[Theating overload frequency-limited temperature]≤Tinner pipe<[Theating overload frequency reducing
temperature at normal speed], you should limit the frequency raising of compressor.
2. Reducing frequency at normal speed and stopping machine: If [Theating overload frequency reducing temperature
at normal speed]≤Tinner pipe<
[Theating overload frequency reducing temperature at high speed],you should adjust the compressor frequency by
reducing 8Hz/90s till the lower limit; After
it was running 90s at the lower limit, if [Theating overload frequency reducing temperature at normal speed]≤Tinner
pipe, then overload protects machine stopping;
3. Reducing frequency at high speed and power turn-off: If [Theating overload frequency reducing temperature at
high speed]≤Tinner pipe<
[Theating overload power turn-off temperature] you should adjust the compressor frequency by reducing 30Hz/90s
till the lower limit; After it was
running 90s at the lower limit, if [Theating overload frequency reducing temperature at normal speed]≤Touter pipe,
then Cooling overload protects machine stopping;
4. Power turn-off:If the [Theating overload power turn-off temperature]≤Tinner pipe, then overload protects
machine stopping; If Tinner pipe<
[Theating overload frequency-limited temperature] and the compressor has been stopped working for 3 minutes, the
machine should be allowed to operate.
5. If the overload protection power turn-off continuously occurs for 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 running time of
compressor exceeds the
[toverload 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

1. Starting estimation:
After the compressor stopped working for 180s, if TDischarge<[TDischarge limited temperature](the temperature of
hysteresis is 35.6°F), 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.
2. Frequency limited
If [TLimited frequency temperature during discharging]≤TDischarge<[Tfrequency reducing temperature at normal
speed during discharging], you should limit the frequency raising of compressor.
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