York EVJC 12, Руководство по установке

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If it still can’t run automatically when the out-of-step protection for compressor happens to stop working for 6
times in succession, it needs to press ON/OFF to operate. And if the running time is more than 10 min, the power
turn-off times for out-of-step protection shall be cleared and recounted.
(13) Voltage Abnormity Protection for DC Bus
1. To detect voltage abnormity protection for dc bus after completing the pre-charge:
(1) Over-High Voltage Protection for DC Bus:
If it found the DC bus voltage U
DC
˚
[U
DC Jiekuangchun Protection]
, turn off PFC and stop the compressor at once, and it
shall show the DC over-high voltage failure; and it should clear the failure when the voltage dropped to U
DC
˘
[U
DC
Jiekuangchun Recovery]
and the compressor stopped for 3 min.
(2) Over-Low Voltage Protection for DC Bus:
If it found the DC bus voltage U
DC
˘
[U
DC Wantuochun Protection]
, turn off PFC and stop the compressor at once, and it
shall show the DC over-low voltage; and it should clear the failure when the voltage raised to U
DC
˚
[U
DC
Wantuochun Recovery]
and the compressor stopped for 3 min.
2. To detect voltage abnormity protect for DC bus when getting electricity:
If it found the DC bus voltage U
DC
˚
[U
DC——Over-High Voltage]
, turn off the relay at once, and shows voltage abnormity
failure for DC Bus. And the failure can’t recover except to break off and get the electricity.
(14) Abnormity Protection for Four-way Valve
Under the model of heating operation in good condition: the compressor is detected T
Inner Tube
˘
(T
Inner Ring
—[T
Abnormity Temperature Difference For Four-Way Valve Reversion
]), during the running, it should be judged as four-way valve reversion
abnormity. And then it shall run if stop the reversion abnormity protection for four-way valve 3 min; and if it still
can’t run when the reversion abnormity protection for four-way valve happens to stop working for 3 times in
succession, it is available if presses ON/OFF.
Attention: the protection shall be shielded during the testing mode and defrosting process, and it shall be cleared
the failure and its times immediately when turning off or delivering wind / cooling / dehumidifying mode conversed
(the inverted mode don’t clear failure when it can’t recover to operate).
(15) PFC Protection
1. After start up the PFC, it should detect the protection signal of PFC immediately; under the condition of PFC
protection, it should turn off the PFC and compressor at one time;
2. It shows the failure is cleared if PFC Protection stopped working 3 min and recovers to run automatically;
3. If it still can’t run when it occurs PFC protection for 3 times in succession, it is available if presses ON/OFF; and
clear the PFC Protection times when start up PFC for 10min.
(16) Failure Detection for Temperature Packets
1. Ambient Temperature Packets: detect the failure of temperature packets at all times.
2. Temperature Packets for Outdoor Tube Temperature: only detect the temperature packets failure for outdoor
tube temperature during the defrosting within the heating operation compressor starting-up 10min. to detect the
failure of temperature packets; to detect the failure of temperature packets at all times except it.
3. Outdoor Discharge Temperature Packets:
(a) The compressor only detect the temperature packets failure after it start up 3 min in normal mode;
(b) It should detect the discharge temperature packets failure immediately in the testing mode.
4. Module Temperature Packets:
(a) Short-Circuit Detection: the compressor should be detected immediately when the module temperature
packets occur short-circuits;
(b) Open-Circuit Detection: the compressor should be detected on open-circuit when it runs 3min (it needn’t 30s
avoiding the module over-heated).
(c) Detect the temperature packets failure at all times in the testing mode.
5. Disposal for Temperature Packets Protection
(1) When the short-circuit of temperature packet is detected within 30s,
It is regarded as the temperature of temperature packets over-high (or infinite), and now according to the
over-high temperature packets, the machine should carry out the corresponding protection to stop working, and
show the corresponding temperature shutdown protection and temperature packets failure at the same time (for
example: the compressor stops immediately when outer tube temperature packets short-circuit, and the machine
shall show the overload protection and outer tube temperature packets failure).
(2) When the open-circuit of temperature packet is detected within 30s,
The protection shall be stopped and it shall show the corresponding temperature packet failure.
Operation
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