120ºC (undetermined)
113ºC (undetermined)
108ºC (undetermined)
80ºC (undetermined)
release
normal limit stop
(3 minutes stand-by) stop restore(compressor restarts)
If the compressor continuously stops twice within 30 minutes, the compressor discharge temperature protection
alarms.
Note:
The undetermined data are for the example machine type, not for all types.
The dotted line indicates the descending curve of the discharge temperature after frequency is limited, and the real
line indicates the continuous ascending curve of the discharge temperature after frequency is limited.
1.1.7.4 Over-current protection of the power module。
When compressor is running, if “rotation obstacle” appears or the system pressure is too high, the power module
will send “over-current signal of power module” to outdoor computer board to protect it from damaging and the
unit stops and alarms.
1.1.7.5 Overhigh temperature protection of the outdoor computer board
If the temperature of the outdoor computer board is too high, the system will reduce the frequency or stop the
compressor to protect other components on the computer board from damaging, see the following figure for
details:
75ºC (undetermined)
75ºC (undetermined)
normal reduce unit stop ( 3 minutes stand-by) restore
frequency
1.1.8 Abnormity confirmation alarm
1.1.8.1 Indoor ambient temperature sensor abnormal
When in running, temperature above 126ºC or below -31ºC is abnormal.
When leaving the above ranges, operation resets automatically.
1.1.8.2 Indoor coil pipe temperature sensor abnormal
When in running, temperature above 196ºC or below -53ºC is abnormal.
When leaving the above ranges, operation resets automatically.
If abnormity appears, the low-load protection shall be released.
1.1.8.3 High-load protection
Model:
HSU-09H03/(BP)1
HSU-12H03/(BP)1Domestic Air Conditioner
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