Functions and control
b) For the units’ malfunctions˖Annex 1
If there’s malfunction with the units, this will not affect the run of the complete appliance, but this can be
displayed by the malfunction light, the light flashing frequency is 0.5HZ, the number of times is according to
the malfunction table of the indoor units. When a round of flashing is finished, the light should be off for 10
seconds. Then report according to the order : unit A→unit B→unit C→unit D, that is, if there’s malfunction
with several units, then just report the indoor unit with the highest priority level.
Among the unit malfunctions, the priority level of the communication malfunction is the highest, forothers,
that appears first will have the priority.
Remarks: in 3 minutes when the compressor stops, the units’ malfunctions are not displayed; the complete
appliance’s malfunctions are prior to the units’
malfunctions.
Annex 1˖Malfunction codes of the whole unit
Remarks: under the mode of refrigeration, the malfunctions of each unit’s thin pipe temperature sensor are
not reported, under the mode of heating, the malfunctions of each unit’s thick pipe temperature sensor are
not reported.
●During the starting process of the compressor, if the current of the compressor is greater than 17.5A
for 3 seconds, stop the compressor and alarm, after 3 minutes, start it again, if such state appears 3
times in 20 minutes, stop the compressor and alarm, and confirm the malfunction. Then continue to
run it only after the the power is off.
●During the starting process of the compressor, if the AC current is greater than 16.5A, the frequency
of the compressor decreases at the speed of 1HZ/second.
●During the starting process of the compressor, if the AC current is greater than
15.5A, t
he frequency
of the compressor decreases at the speed of 0.1HZ/second.
●During the starting process of the compressor, if the AC current is greater than14.5A, the frequency
of the compressor increases at the prohibited speed.
●During the starting process of the compressor, if the AC current is greater than 13.5A, the frequency of the
compressor increases at the speed of no faster than 0.1HZ/second.
5.2.9 The protection function of AC current:
During the starting process of the compressor, if the AC current is greater than 16.5A, the frequency of the
compressor decreases at the speed of 1HZ/second.
During the starting process of the compressor, if the AC current is greater than 15.5A, the frequency of the
compressor decreases at the speed of 0.1HZ/second.
During the starting process of the compressor, if the AC current is greater than 14.5A, the frequency of the
compressor increases at the prohibited speed.
During the starting process of the compressor, if the AC current is greater than 13.5A, the frequency of the
compressor increases at the speed of no faster than 0.1HZ/second.
Remarks: when the
outdoor t
emperature is high, there’s compensation for AC current protection.
ŁWhen the outdoor environment temperature is higher than 40ć, AC current protection value decreases
by 25AD
łWhen the outdoor environment temperature is higher than 46ć,AC current protection value decreases by
15AD
ŃWhen the outdoor environment temperature is higher than 50ć,AC current protection value decreases by
35AD
Domestic air conditioner
27
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