Gree GWH12ACC-K6DNA1D Service Manual page 44

Service Manual
1. Frequency limited
If [T
heating overload frequency-limited temperature
compressor.
2. Reducing frequency at normal speed and stopping machine:
If T[
heating overload frequency reducing temperature at normal speed
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if T
, then overload protects machine stopping;
pipe
3. Reducing frequency at high speed and power turn-off:
If [T
heating overload frequency reducing temperature at high speed
reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if T heating overload frequency reducing temperature at normal
speed ≤T outer pipe, then Cooling overload protects machine stopping;
4. Power turn-off:
If the [T
heating overload power turn-off temperature
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 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 can not 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 T
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 [T
Limited frequency temperature during discharging
compressor.
3. Reducing frequency at normal speed and stopping machine:
If [T
frequency reducing temperature at normal speed during discharging
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [T
≤T , you should discharge to protect machine stopping;
Discharge
4. Reducing frequency at high speed and power turn-off:
If [T
frequency reducing temperature at high speed during discharging
the compressor frequency by reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if [T
] ≤T
speed during discharging Discharge
5. Power turn-off:
If the [T
Power turn-off temperature during discharging
] and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
discharging
6. If the discharging temperature protection of compressor 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 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 can not be resumed, mode transferring also will not clear it).
7. Frequency limited
If [I
Limited frequency when overcurrent
8. Reducing frequency:
If [I
Frequency reducing when overcurrent
the frequency reducing condition;
9. Power turn-off:
If [I
Power turn-off machine when overcurrent
] and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
overcurrent
10. If the overcurrent 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 [t
protection is cleared to recount.
Installation and Maintenance
]≤T <[T
inner pipe heating overload frequency reducing temperature at normal speed
]≤T
inner pipe
]≤T
inner pipe
] ≤T , then overload protects machine stopping; If T inner pipe T heating overload frequency-limited
inner pipe
Discharge
] ≤T <[T
Discharge frequency reducing temperature at normal speed during discharging
] ≤T
Discharge
] ≤T
Discharge
, you should discharge to protect machine stopping;
] ≤T , you should discharge to protect machine stopping; If [T
Discharge
] ≤I <[I
AC Electric current frequency reducing when overcurrent
] ≤[I
AC Electric current I Power turn-off when overcurrent
] ≤[I ] , you should carry out the overcurrent stopping protection; If I
AC Electric current
<[T
heating overload frequency reducing temperature at high speed
<[T
heating overload power turn-off temperature
<T (the temperature of hysteresis is 2ºC ), the machine is
Discharge limited temperature
<[T
frequency reducing temperature at high speed during discharging
<[T
Stop temperature during discharging
], you should limit the frequency raising of compressor.
] , you should reduce the compressor frequency till the lower limit or exit
] , you should limit the frequency raising of
], you should adjust the compressor
heating overload frequency reducing temperature at normal speed
], you should adjust the compressor frequency by
] , you should limit the frequency raising of
], you should adjust the compressor
frequency reducing temperature at normal speed during discharging
], you should adjust
frequency reducing temperature at normal
]<[T
Discharge
AC Electric current
Protection times clearing of over current
≤T
inner
]
Limited frequency temperature during
<[T
Limited frequency when
] , the discharge
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