Domestic Air Conditioner
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signal to the outdoor system. Meanwhile, you can fix the indoor system at high speed mode, the
location of the airflow directin board can be switched to the maximal position.
c. Quitting condition: The fixed frequency heating can be quitted after receiving the remote signal, and
the system will enter the remote setting status.
5.1.19 Test program
First, connect the test program terminal on the mainboard, then connect the system to the power
circuit. The test program will operate as follows.
HV series display: The buzzer rings for one time—the signal will be sent to outdoor system for 0.5
second— the violet is sent for 0.5-- the background light turns to white—the back ground light turns to
white—the background light turns to white—the background light is fully lighted for 0.5 second—LED
screen lights for 0.5 second— the step-in motor fully output for 0.5 second—then the motor doesn’t
output for 0.5 second—the motor fully output again for 0.5 second. The test program finishes.
5.1.20 Time cutting function:
connect the test program terminal on the mainboard after connecting the system to the power circuit.
The CPU of the main control will be 60 times faster.
5.2 The control system of outdoor unit
5.2.1˖The operation frequency of outdoor unit and its control
5.2.1.1
The operation frequency control of compressor
The operation frequency scope of compressor˖
Mode Minimun operation frequency Maximun operation frequency
Heating 36Hz 110Hz
Refrigeration 36 Hz 95Hz
5.2.1.2
The starting of compressor
When the compressor is started for the first time, it must be kept under the conditions of
58Hz,88Hz for one minute (the overheating protection of the outdoor unit air-blowing temperature,
immediately decrease the frequency when the compressor is overflowing and releasing the
pressure)ˈthen it can be operated towards the target frequency. When the machine runs normally,
there’s no such process. After starting the compressor for operation, the compressor should run
according to the calculated frequency, and every determined frequency for protection should be prior
to the calculated frequency.
5.2.1.3
The speeds of increasing or decreasing the frequency of the compressor
The speed of increasing or decreasing the frequency rapidly 1 -----------1HZ/second
The speed of increasing or decreasing the frequency slowly 2 -----------1HZ/10seconds
5.2.1.4
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