Air-Con ACZCI4C4R12, Руководство по обслуживанию

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20
Technical Information
Service Manual
2 Hz drooping
1.0second after
rushing in the
drooping zone
After 2.5 seconds
Compressor stops
Stop zone
Drooping zone
Keep zone
Reset zone
1
2
3
Detail
Input Current Control
Outline
Detect an input current by the CT during the compressor is running, and set the frequency upper limit from such input current.
In case of heat pump model, this control is the upper limit control function of the frequency which takes priority of the lower limit of four
way valve activating compensation.
Detail
The frequency control will be made within the following zones.
When a “stop current” continues for 2.5 seconds after rushing on the stop zone, the compressor operation stops.
If a “drooping current” is continues for 1.0 second after rushing on the drooping zone, the frequency will be 2 Hz drooping.
Repeating the above drooping continues until the current rushes on the drooping zone without change.
In the keep zone, the frequency limit will remain.
In the return / reset zone, the frequency limit will be cancelled.
Limitation of current drooping and stop value according to the outdoor air temperature
1. In case the operation mode is cooling
* The current droops when outdoor air temperature becomes higher than a certain level (model by model).
2. In case the operation mode is heating
* The current droops when outdoor air temperature becomes higher than a certain level (model by model).
Freeze-up Protection Control
Outline
During cooling operation, the signals being sent from the indoor unit allow the operating frequency limitation and then prevent freezing
of the indoor heat exchanger. (The signal from the indoor unit must be divided into the zones as the followings.)
Detail
1.Conditions for Start Controlling
Judge the controlling start with the indoor heat exchanger temperature after 2 sec from operation start.
2.Control in Each Zone
Divide the Zone
Management within the Zones
s t n e t n o c l o r t n o C e n o Z
Stop zone When the temperature reaches the stop zone, stop the compressor and
correct abnormality.
Drooping zone Start the timer, and the frequency will be drooping.
Keep zone Keep the upper limit of frequency.
Return / Reset zone Cancel the upper limit of frequency.
Heat exchanger
thermistor
temperature
Stop zone
Drooping zone
Keep zone
Up zone
Reset zone
FCG 3
FCG 2
FCG 1
TCG1
TCG2
TCG3
88
64
48
240
360
180
TCG 1sec TCG 2sec TCG 3sec
Time
Frequency
FCG3
FCG2
FCG1
(12)Health Function
When the indoor fan motor is running, the Health function is set by pressing remote controller (If there is no Health button on the remote
controller, the health function opening is defaulted).
(13)I Feel Function
If the remote controller receives the I Feel order, the controller will work at the ambient temperature value which is sent by remote
controller (Except the defrosting and anti-cool wind, which still adopts the sampling value of AC itself ambient temperature sensor),
the remote controller will send ambient temperature value to controller every 10mins. After 11mins, if the controller hasn’t received the
ambient temperature value from the remote controller for long time, then it will run according to the current ambient temperature of AC.
If the function has not been set, the ambient temperature will adopt the sensor sampling value of AC itself. If power off happens, this
function will not be memorized.
Troubleshooting of Temperature Sensor
(1) Indoor Temperature Sensor
Detect malfunctions of temperature sensor any time.
(2) Indoor Pipe Temperature Sensor
detect the temperature sensor malfunction. In other times, the temperature sensor malfunction will be detected.
(3) Protection of Temperature Sensor
1. When short-circuit occurs to the temperature sensor for 5s:
The temperature sensor overheats. In this case, the complete unit will stop for protection. At the same time, the temperature protection
and temperature sensor malfunction will be shown.
2. When break-circuit occurs to the temperature sensor for 5s:
The unit will stop and the temperature sensor malfunction will be displayed.
Frequency Control
Frequency Initial Setting<Outline>When starting the compressor, or when conditions are varied due to the change of the room, the
frequency must be initialized accordingto the D value of the indoor unit and the Q value of the indoor unit.Q value: Indoor unit output
D Signal)
1.P controlCalculate D value in each sampling time (20 seconds), and adjust the frequency according to its difference from the
frequencypreviously calculated.
D value.
When the D value is small lower the frequency.
When the D value is large increase the frequency.
3.Frequency management when other controls are functioningWhen frequency is drooping;Frequency management is carried out only
when the frequency droops.For limiting lower limitFrequency management is carried out only when the frequency rises.
4.Upper and lower limit of frequency by PI controlThe frequency upper and lower limits are set depending on indoor unit.When low
noise commands come from the indoor unit or when outdoor unit low noise or quiet commands come from indoor unit, theupper limit
frequency must be lowered than the usual setting.
3-minutes Standby
Prohibit to turn ON the compressor for 3 minutes after turning it off.(except when defrosting)
Compressor Protection Function
When turning the compressor from OFF to ON, the upper limit of frequency must be set as follows. (The function must not be used
when defrosting.)
Discharge Pipe Control
Outline
The discharge pipe temperature is used as the compressor’s internal temperature. If the discharge pipe temperature rises above a
certain level, the operating frequency upper limit is set to keep this temperature from going up further.