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3. 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/90s till the lower limit; After
it was running 90s at the lower limit, if [T
frequency reducing temperature at normal speed during discharging
]≤T
Discharge
, you should discharge to protect
machine stopping;
4. 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/90s till the lower limit; After it was running
90s at the lower limit, if [T
frequency reducing temperature at normal speed during discharging
]≤T
Discharge
, you should discharge to protect machine stopping;
5. Power turn-off:If the [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.
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
]≤I
AC Electric
current
<[I
frequency reducing when overcurrent
], you should limit the frequency raising of compressor.
8. Reducing frequency:
If [I
Frequency reducing when overcurrent
]≤I
AC Electric current
<[I
Power turn-off when overcurrent
], you should reduce the compressor frequency till the lower limit or
exit the frequency reducing condition;
9. 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 has been stopped for 3 minutes, the machine should be allowed to operate.
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 times clearing of overurrent
], the
discharge protection is cleared to recount.
(6)Voltage sag protection
After start the compressor, if the time of DC link Voltage sag [U
Sagging protection voltage
] is measured to be less than [t
Voltage sag protection time
], the
machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes.
(7)Communication fault
When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault.
When you have not received any correct signal from driver IC (aim to the controller for the separating of main control IC and driver IC),
and the machine will stop for communication fault. If the communication is resumed, the machine will be allowed to operate.
(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 [t
Protection 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 T
Module
<[T
Module 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 [T
Limited frequency temperature of module
]≤T
Module
< [T
frequency 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 [T
frequency reducing temperature at normal speed of module
]≤T
Module
<
[T
frequency 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 [T
frequency reducing temperature at normal speed of module
]<T
Module
, you should stop the machine for module
overheating protection;
2. Frequency limited If [T
Limited frequency temperature of module
]≤T
Module
<[T
frequency 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 [T
frequency reducing temperature at normal speed of module
]≤T
Module
<[T
frequency 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 [T
frequency reducing temperature at normal speed of module
]
≤T
Module
, you should stop the machine for module overheating protection;
4. Reducing frequency at high speed and power turn-off
If [T
frequency reducing temperature at high speed of module
]≤T
Module
<[T
Power 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 [T
frequency reducing temperature at normal speed of module
]≤T
Module
, you should
stop the machine for module overheating protection;
