Haier AB072XCEAA Service Manual - Page 73

Control of the compressor, outdoor motor and 4-way valve

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Chff^j\bZe Abj Chg]blbhg^j 9.5.4. Electric funtions of outdoor A.1 Control of the compressor, outdoor motor and 4-way valve A.1.1 Outdoor fan motor control A. When system do not have overheating or over current protection, outdoor fan speed will vary with outdoor ambient temperature, as follows: a. in cooling mode temperature arise temperature reduce outdoor fan motor 26℃ high speed high speed 28℃ 22℃ med speed med speed 24℃ 13℃ low speed low speed 15℃ super low speed super low speed temperature arise b. in heating mode (heat pump unit) temperature reduce outdoor fan motor super low speed 22℃super low speed 23℃ low speed 16℃ med speed 9℃ high speed low speed 19℃ med speed 11℃ high speed B.When fan speed changes, if it is from Low speed to High speed, there is no time delay; if it is from High speed to Low speed, there is 45-second delay. C.In cooling mode, in one minute before the compressor begins to run,the outdoor motor will be switched on to run. D.Super low speed control:outdoor motor will be off for 1 minute at the interval of 45 seconds. A.1.2 Compressor control After receiving the "compressor ON" signal sent from indoor unit, the compressor will run. Its running-stop interval is 3 minutes. Being powered on firstly is without 3-minute delay. If the two systems receive the "compressor ON" signal simultaneously,they will start up in turn, and the interval is 20 seconds. A.1.3 4-way valve control A. In cooling or dehumidification mode, 4-way valve is not electrified. B. When receiving the "heating" and "compressor ON" signal from indoor unit, 4-way valve and compressor will start up simultaneously. C. In 3 minutes after heating is over, it will be shut off 2 minutes and 50 seconds later. In 3-minute standby period, at 2-minute and 50-second clock, it is electrified. D. Changing from cooling mode to heating mode, 3 minutes later, it is eletrified. z 71 z

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9.
5.4.
Electric funtions of outdoor
A
.1 Control of the compressor, outdoor motor and 4-way valve
A
.
1.1 Outdoor fan motor control
A. When system do not have overheating or over current protection, outdoor fan speed
will vary with outdoor ambient temperature, as follows:
a. in cooling mode
temperature arise
super low speed
low speed
med speed
high speed
super low speed
low speed
med speed
high speed
15
℃
24
℃
28
℃
13
℃
22
℃
26
℃
temperature reduce
outdoor fan motor
b.
in heating mode (heat pump unit)
temperature arise
super low speed
low speed
med speed
high speed
11
℃
19
℃
9
℃
16
℃
temperature reduce
outdoor fan motor
super low speed
low speed
med speed
high speed
22
℃
23
℃
B.When fan speed changes, if it is from Low speed to High speed, there is no time delay;
if it is from High speed to Low speed, there is 45-second delay.
C.In cooling mode, in one minute before the compressor begins to run,the outdoor motor
will be switched on to run.
D.Super low speed control:outdoor motor will be off for 1 minute at the interval of 45
seconds.
A
.
1.2 Compressor control
After receiving the “compressor ON” signal sent from indoor unit, the compressor will run.
Its running-stop interval is 3 minutes. Being powered on firstly is without 3-minute delay.
If the two systems receive the “compressor ON” signal simultaneously,they will start up in
turn, and the interval is 20 seconds.
A
.
1.3 4-way valve control
A. In cooling or dehumidification mode, 4-way valve is not electrified.
B. When receiving the “heating” and “compressor ON” signal from indoor unit, 4-way
valve and compressor will start up simultaneously.
C. In 3 minutes after heating is over, it will be shut off 2 minutes and 50 seconds later. In
3-minute standby period, at 2-minute and 50-second clock, it is electrified.
D. Changing from cooling mode to heating mode, 3 minutes later, it is eletrified.
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