Module Protection; Module Overheating Protection - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

Basic Functions - 18K & 24K 230 volt

(8)Module protection

Testing the module protective signal immediately after started, once the module protective signal is measured, stop
the machine with
module protection immediately. If the module protection is resumed, the machine will be allowed to operate.
If the module protection continuously occurs for three times, it should not be resumed automatically, and you should
press the ON/OFF
button to resume. If the running time of compressor exceeds the [tProtection times clearing of module], the module
protection is cleared to recount.

(9)Module overheating protection

1. Starting estimation:
After the compressor stopped working for 180s, if TModule <[TModule frequency 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
module overheating
protection: 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 of module]≤TModule < [Tfrequency reducing temperature at normal speed of
module], you should limit the frequency raising of compressor.
3. Reducing frequency at normal speed and power turn-off: If [Tfrequency reducing temperature at normal speed of
module]≤TModule<
[Tfrequency reducing temperature at high speed of module], you should adjust the compressor frequency by
reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [Tfrequency reducing temperature
at normal speed of module]<TModule, you should stop the machine for module
overheating protection;
2. Frequency limited If [TLimited frequency temperature of module]≤TModule<[Tfrequency reducing temperature
at normal speed of module], you should limit the frequency raising of compressor.
3. Reducing frequency at normal speed and power turn-off
If [Tfrequency reducing temperature at normal speed of module]≤TModule<[Tfrequency reducing temperature at
high speed of module], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [Tfrequency
reducing temperature at normal speed of module] ≤TModule, you should stop the machine for module overheating
protection;
4. Reducing frequency at high speed and power turn-off
If [Tfrequency reducing temperature at high speed of module]≤TModule<[TPower turn-off temperature of module]
you should adjust the compressor frequency by reducing 30Hz/90s till the lower limit; After it was running 90s at
the lower limit, if [Tfrequency reducing temperature at normal speed of module]≤TModule, you should stop the
machine for module overheating protection;
5. Power turn-off
If the [TPower turn-off temperature of module]≤TModule, you should stop the machine for module overheating
protection; If TModule< [TLimited frequency temperature of module] and the compressor has been stopped for 3
minutes, the machine should be allowed to operate.
6. If protection continuously occurs for six 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
[tProtection times clearing of module], the discharge protection is cleared to recount. Stopped or transferred to
supply air mode will clear the trouble times immediately (if the trouble cannot be
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