AL Tech ATM-021DCIMX05 Operating manual

Technical service manual 2010
R410A 9A DC Inverter multi Series
Indoor Models
ATM-021DCIMX05
ATM-026DCIMX05
ATM035DCIMX05
ATM-053DCIMX05
Outdoor Models
ATE-053DCIMX05
ATE-079DCIMX05
ATE-081DCIMX05

CONTENT
1. Product features
2. Dimensions
3. Refrigeration cycle diagram
4. Operation limits
5. Indoor unit combination
6. Wiring diagram
7. Electric control functions
8. Troubleshooting
Annex 1 Characteristic of temp. sensor
Annex 2 Reference data

1. Product features
When the power supply is interrupted
and then restore, the air conditioners
automatically restore the previous
function setting.
Ionizer (optional)
Maintain the room temperature in accordance w
ith the setting temperature.
The
mode can be change by the room temperature.
The louver can be set at the desired position or
swing up and down automatically
The function is usually used in rainy days in
springtime or damp areas.
The fan is turn to low speed (cooling/heating).
The unit will be turn off at the seventh hour.
The unit will decide the louver direction according to
operation mode.
high, med, low, breeze.
Restarting is for approx. 3 minutes..
Prevent the water being frozen on evaporator by sensing the
evaporator pipe temperature in cooling mode
Room temperature sensor.
Pipe temperature sensor.
Indoor unit
Operation by remote controller
Sensing by room temperature
Room temperature control
Anti-freezing control in cooling
Time Delay Safety control
Indoor fan speed control
Two-direction air vane
Sleep mode auto control
Independent dehumidification
Air flow Direction control
Auto mode
Temp. Compensation Flexible wiring connection
Auto defrost
Anti-cold function
Self-diag. function
Auto-restart function
Prevent the cold wind at the
beginning of unit start.

It protects the valves and prevents water from dripping.
The unit has 3 mins delay between continuously ON/OFF operations.
Outdoor unit
Power relay control
The hydrophilic fin can improve the heating efficiency at operation mode.
Hydrophilic aluminum fin
It is only operated in the heating operation mode except defrosting operation.
Anti-rust cabinet
Valve protection cover
4 way valve control
Made from electrolytic zinc steel sheet and anti
-
rust coated components.
Low noise air flow system
Bird tail propeller fan makes the outdoor unit run more quietly.
Discharge pipe temperature protect
Driving heating at -15

2 Dimensions
2.1 Indoor unit
Model W(mm) H(mm) D(mm)
21/26/35 845 290 165
53 995 292 200
2.2 Outdoor unit
b) ATE-053DCIM2X05 / ATE-078DCIM3X05

c) ATE-081DCIM4X05

3 Refrigeration Cycle Diagram
3.1 Refrigeration circuit drawing of inverter quadplex type
3.2 Refrigeration circuit drawing of inverter trinary type
3.3 Refrigeration circuit drawing of inverter binary type
Liquid valve A
Gas valve C
EXV C
4-
way
valve
Compressor
Condenser
Axial flow fan
EXV B
EXV A
Gas valve A
Gas valve B
Liquid valve C
Liquid valve B
Evaporator
Cross
flow fan
Indoor Unit
Capillary A
Capillary B
Capillary C
Filter A
Filter B
Filter C
Main
Capillary
Auxiliary
Capillary
Check
Valve
Exhaust
temp. sensor
Indoor pipe out
temp. seneor B
Indoor pipe out
temp. seneor A
Indoor pipe out
temp. seneor C
Outdoor Unit
Coil temp.
sensor

Indoor Unit
Cross flow fan
Evaporator
Liquid valve A
Liquid valve B
Gas valve B
Gas valve A
EXVA
EXVB
Axial flow fan
Condenser
Compressor
4-way
valve
Auxiliary
Capillary
Capillary A
Capillary B
Exhaust
temp. sensor
Indoor pipe out
temp. seneor A
Indoor pipe out
temp. seneor B
Filter A
Filter B
Outdoor Unit
Main
Capillary
Check
ValveCoil temp.
sensor
4 Temperature Operation range
Indoor temperature 17°C
Cooling mode Outdoor temperature 50°C
Indoor temperature <=30
Heating mode Outdoor temperature -15 24
Indoor temperature 10
Dry mode Outdoor temperature 0°C 50°c
5. Indoor units combination
5.2 Indoor unit combination for ATE-053DCIM2X05
2QHXQLW

7ZRXQLW
  
  
 



 


5.4 Indoor unit combination for ATE-079DCIM3X05
2QHXQLW

7ZRXQLW 7KUHHXQLW
   

  
  



  
 

  





 

  

 

5.6 Indoor unit combination ATE-081DCIM4X05
2QHXQLW 7ZRXQLW 7KUHHXQLW )RXUXQLW
         
         

         
         
         

6. Wiring Diagram
6.1 Indoor unit TAILLE 021/026/035/053
6.3 Outdoor unit ATE-053DCI2X05

6.4 Outdoor unit ATE-079DCI3X05
6.6 Outdoor unit ATE-081DCI4X05

7 Electronic control function
7.1 Electric Control working environment.
7.1.1 Input voltage: 175~253V.
7.1.2 Input power frequency:50Hz.
7.1.3 Indoor fan normal working amp. is less than 1A.
7.1.4 Outdoor fan. Normal working amp. is less than 1.5A.
7.1.5 Four-way valve normal working amp. is less than 1A.
7.1.6 Swing motor: DC12V.
7.2 Icon explanation on indoor display board.
7.2.1 Run indicator
Flash at 0.5Hz when the unit is standby. Illuminate when the unit is turned on.
7.2.2 Auto indicator
Illuminates when the air conditioner is in AUTO operation.
7.2.3 Timer indicator
Illuminate when TIMER is set ON/OFF.
7.2.4 Defrost Indicator
Illuminate when the air conditioner starts defrosting automatically or when the warm air
control feature is activated in heating mode.
7.2.5 TEMPERATURE indicator
Usually it displays the temperature settings. When change the setting
temperature, this indicator begins to flash, and stops 20 seconds later. It
displays the room temperature when the air conditioner is in FAN only operation,
and the range of that is 0~50. It will also display the error codes when
malfunction or protection happen.
7.2.6 Frequency indicator
This indicator appears only when the compressor is in operation and indicates the current operating
frequency.
7.3 Outdoor unit’s digital display tube
There is a digital display tube in outdoor PCB.
7.3.1 Digital display tube display function
•In standby , the LED displays “- -”
•In compressor operation, the LED display the running frequency,
•In defrosting mode, The LED displays “dF” or alternative displays between running
frequency and “dF”(each displays 2s)
•In compressor pre-heating, The LED displays “- -”
•In protection or malfunction, the LED displays error code or protection code.
•

7.4 Outdoor unit point check function
There is a check switch in outdoor PCB.
Push the switch SW1 to check the states of unit when the unit is running. The digital display
tube will display the follow procedure when push SW1 each time:
Display Remark
1 Indoor unit capacity demand code
2 Outdoor unit running mode code Off:0, Cooling:1, Heating:2
3 Amendatory capacity demand code
4 Outdoor unit fan motor state Off:0, Low speed:1, High speed:2
5 Evaporator outlet temp. for 1# indoor unit Actual data
6 Evaporator outlet temp. for 2# indoor unit Actual data
7 Evaporator outlet temp. for 3# indoor unit Actual data
8 Evaporator outlet temp. for 4# indoor unit Actual data
9 Condenser pipe temp. Actual data
10 Ambient temp. Actual data
11 Compressor discharge temp. Actual data
12 Inverter current Actual data
13 EXV open angle for 1# indoor unit Actual data×8
14 EXV open angle for 2# indoor unit Actual data×8
15 EXV open angle for 3# indoor unit Actual data×8
16 EXV open angle for 4# indoor unit Actual data×8
17 DC voltage for outdoor unit Actual data
18 Indoor unit number The indoor unit can communicate with
outdoor unit well.
19 The last error or protection code 00 means no malfunction
20 Frequency sent from chip 0034 to chip 341 Actual data
21 Indoor room temp. for 1# indoor unit Actual data
22 Indoor pipe temp. for 1# indoor unit Actual data
23 Indoor room temp. for 2# indoor unit Actual data
24 Indoor pipe temp. for 2# indoor unit Actual data
25 Indoor room temp. for 3# indoor unit Actual data
26 Indoor pipe temp. for 3# indoor unit Actual data
27 Indoor room temp. for 4# indoor unit Actual data
28 Indoor pipe temp. for 4# indoor unit Actual data
29 ʊʊ Check point over
7.4.1 Frequency of compressor:
Display Frequency of compressor
(Hz)
30 30
-- Stand by
60 60

7.4.2 Running mode:
Display Corresponding mode
0 Off
1 Cooling mode
2 Heating mode
7.4.3 Capacity demand:
Cooling mode
Capacity 2000-
2500
2000-
2500
3000-
3800
4500-
5000
5000-
5500
5500-
6100
6100-
7000
7000-
7500
7500-
8000
7500-
8000
Correspon
ding Code
1 2 3 4 5 6 7 8 9 >=10
Heating mode
Capacity 2000-
2500
2000-
2500
3000-
3800
4500-
5000
5500-
6100
6100-
7000
6100-
7000
7000-
7500
7500-
8000
8000-
8900
Correspond
ing Code
1 2 3 4 5 6 7 8 9-10 >=11
Note:
The capacity is just for reference.
7.4.4Number of indoor unit
Display Number of indoor unit
1 1
2 2
3 3
7.4.5Outdoor ambient temp:
Display Corresponding temp. Display Corresponding
temp. Display Corresponding
temp.
15 -7.5 50 10 80 25
16 -7 51 10.5 81 25.5
17 -6.5 52 11 82 26
18 -6 53 11.5 83 26.5
19 -5.5 53 11.5 84 27
20 -5 54 12 85 27.5
21 -4.5 55 12.5 86 28
22 -4 56 13 87 28.5
23 -3.5 57 13.5 88 29
24 -3 58 14 89 29.5
26 -2 59 14.5 90 30
27 -1.5 60 15 91 30.5
28 -1 61 15.5 92 31
29 -0.5 62 16 93 31.5
30 0 63 16.5 93 31.5

31 0.5 63 16.5 94 32
32 1 64 17 95 32.5
33 1.5 65 17.5 96 33
34 2 65 17.5 97 33.5
35 2.5 66 18 98 34
36 3 67 18.5 99 34.5
37 3.5 68 19 10. 35~40
38 4 69 19.5 11.40~45
39 4.5 70 20 12.45~50
40 5 71 20.5 13.50~55
41 5.5 72 21 14.55~60
42 6 73 21.5 15.60~65
43 6.5 74 22 16.65~70
44 7 75 22.5
45 7.5 75 22.5
46 8 76 23
47 8.5 77 23.5
48 9 78 24
49 9.5 79 24.5
7.4.6Current of outdoor unit
Display Corresponding mode
44 6.0 A
46 6.2 A
54 7.4 A
55 7.6 A
58 7.6 A
62 8.0 A
66 8.6 A
67 8.8 A
68 9.0 A
70 9.2 A
72 9.5 A
76 10.0 A
78 10.2 A
80 10.4 A
82 10.6 A
84 11.0 A
88 11.6 A
92 12.0 A
94 12.2 A
7.4.7 No. 1 opening degree of electronic expansion valve:
Opening degree equals the display data times 8
7.4.8No. 2 opening degree of electronic expansion valve:

Opening degree equals the display data times 8
7.4.9No. 3 opening degree of electronic expansion valve:
Opening degree equals the display data times 8
7.5 Protection
7.5.1 3 minutes delay at restart for compressor.
7.5.2 Discharge temperature protection of compressor, compressor stops when the temp. of
discharge is more than 115and lasts for 10 s. Compressor runs when the temp. of
discharge is less than 90.
7.5.3 Temperature protection of compressor top, compressor stops when the temp. of top
of compressor is more than 120, compressor runs when the temp. of top of compressor is
less than 105.
7.5.4 When AC voltage ≥265V for 30 seconds, Outdoor Unit stops operation and alarms.
When AC voltage ≤265V for 30 seconds, Outdoor Unit resumes operation.
7.5.5 Inverter module Protection , Inverter module Protection itself has a protection function
against current, voltage and temperature.
7.5.6 Sensor protection at open circuit and breaking disconnection
7.5.7 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High
Fan+300RPM)or too low(lower than 400RPM), the unit stops and LED displays failure
information and can’t return to normal operation automatically.
7.5.8 Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit
stops and LED displays failure information and can’t return to normal operation
automatically.
7.5.9 Current protection: When the current is more than ‘X’ A, the compressor stops.
(X is 7A for 14K 1x2 unit, is 14A for 18K 1x2 unit, is 13.5A for 21 1x3 unit, is 15A for 27K 1x3
unit, is 16A for 27K 1x4 unit and is 21.5A for 36K 1x4 unit. )
7.5.10 Outdoor condenser high temperature protection: Under cooling mode, if T3>65for 3
minutes, the compressor will stop. When T3<52, the protection is not valid.
7.5.11 Pressure protection (just be available for 27K and 36K 1x4 unit): If low pressure is
lower 0.03MPa, the compressor will stop and when low pressure is higher than 0.10MPa,
the compressor will restart. If high pressure is higher than 3.3MPa, the compressor will stop
and when high pressure is lower than 2.4MPa, the compressor will restart.
7.5.12Compressor pre-heating function: When the outdoor temperature is lower than 3
and the compressor stops operation for more than 3 hours, or the outdoor temperature is
lower than 3and the power is just put on, the compressor enters into pre-heating condition.
When outdoor temp. is more than 5or user operate it, pre-heating condition will finish.
7. 6 Fan-only mode
Fan speed is high/mid/low/ Auto

7.7 Cooling mode
7.7.1 Indoor fan keeps running, fan speed can be set in high/mid/low/ Auto:
7.7.2Auto fan at cooling mode: (T=Indoor Temp.-Setting Temp.)
Condition Indoor fan speed
T<1.5Low
1.5<T<4Mid.
Room temp. up
T>4High
T> 3High
1<T<3Mid.
Room temp. down
T<1Low
7.7.3Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. )
Evaporator Temp. Compressor
T< 4Off
T > 8On
7.8 Dehumidifying mode
7.8.1the indoor fan is fixed in low speed
7.8.2Low room temperature protection:
When room temperature decreases to below 10 , indoor fan stop, when room
temperature restores to over 12, indoor fan start.
7.8.3At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the
same as that of cooling mode.
7.9Heating mode
7.9.1Indoor Fan actions at heating mode
Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but
Anti-cold wind function prevails.
Anti-cold wind control function at heating mode
Condition
T= Indoor exchanger
temp.
Indoor fan speed
T<34Off
34<T<37Breeze
37<T<44Low speed
Indoor exchanger temp.
up
T> 44Setting fan speed
T> 38Setting fan speed
33<T<38Low speed
24<T<33Breeze
Indoor exchanger temp.
down
T<24Off
7.9.2Auto wind at heating mode
Condition
T=Indoor Temp.-Setting
Temp.
Indoor fan speed

T<1.5High
1.5<T<2.5Mid.
Room temp. up
T>2.5Low
T<1.0High
1.0<T<2.0Mid.
Room temp. down
T>2.0Low
7.9.3Indoor evaporator high-temperature protection at heating mode
Condition
T= Indoor exchanger temp.
Compressor
T<48On
53<T<63Decrease frequency of compressor
T>63Off
Defrosting operation (Available for heating only).
7.10 Defrost
7.10.1Defrosting condition:
The temperature of outdoor heat exchanger remains consecutively lower than -2°c
for more than 40 minutes,
7.10.2Ending condition of defrosting
If one of following conditions is satisfied, end the defrost and turn into heating mode:
a. The defrost time has reached to 10 minutes.
b. When the temperature of outdoor heat exchanger rises up to 15°C
7.10.3Defrosting Actions:
a. Compressor runs.
b. 4 way valve switches off,
c. Outdoor fan switches off
d. Indoor fan running according to anti-cold wind function in heating mode.
7.11Automatic operation mode
The air conditioner automatically selects one of the following operation modes: cooling,
heating or fan only according to the temp. difference between room temp. (TA) and set
temp. (TS).
TA—TS Operation mode
TA—TS>2Cooling
-1TA-TS+2Fan-only
TA-TS<-1Heating (air-only for cooling only type)
7.12Manual switch
7.12.1Mode changes when push this button .
Cooing modeÆAuto modeÆUnit offÆCooing mode
7.12.2At Cooing mode, after 30 minutes cooling operation whose fan speed is set as low, the
A/C operates with a setting temp. of 24.
7.12.3At auto mode, the A/C operates with a set temp. of 24
7.13Timer Function

7.13.1The maximum length of timer is 24 hours and the minimum resolving power is 15
minutes.
7.13.2Timer on: first turn off the A/C, the A/C will be automatically on at the set time.
7.13.3Timer off: first turn on the A/C, the A/C will be automatically off at the set time
7.13.4Timer on/off function( on time is earlier than off time): first turn off the A/C, it will be
automatically on at set time, and later be off at the set time, then unit turns on at set time.
7.13.5Timer off/on function( off time is earlier than on time): first turn on the A/C, it will be
automatically off at set time, and later be on at the set time, then unit turns off at set time.
7.14Sleep mode
7.14.1It is available at cooling, heating or auto mode.
7.14.2 Cooling:
The set temperature rise 1per hour. Two hours later, the set temperature will
maintain as a constant and the fan speed is kept at low speed.
7.14.3 Heating:
The set temperature decrease 1per hour. Two hours later, the set temperature
will maintain as a constant and the air circulation is kept at low speed (Cold air proof
function takes precedence over all).
7.14.4 Auto:
The Sleep Mode running function operates in accordance with selected running mode by
auto mode.
7.14.5 After 7 hours, unit cancels this mode automatically.
7.15 Auto restart function
In case of a sudden power failure, this function automatically sets the unit to previous
settings before the power failure when power returns.
7.16 Mode conflict
The indoor units cannot work cooling mode and heating at same time.
Heating mode has a priority.
7.16.1Definition
Cooling mode Heating Mode Fan Off
Cooling mode No Yes No No
Heating Mode Yes No Yes No
Fan No Yes No No
Off No No No No
No: No mode conflict;
Yes: Mode conflict
7.16.2 Unit action
•In case of one Indoor unit working in cooling mode or fan mode, and another indoor unit
is set to heating mode, the indoor unit working in cooling mode or fan mode will change
to stand by. The outdoor unit will work in heating mode.
•In case of one Indoor unit working in heating mode, and another indoor unit is set to
cooling mode or fan mode, the indoor unit setting to cooling mode or fan mode will
change to stand by.

8.Troubleshooting
8.1 Safety
Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down
the power supply, electricity power still are kept in capacitors, do not forget to discharge the
electricity power in capacitor.
The value of resistance is about 1500 ohms to 2000 ohms
Resistanc e
The voltage in P3 and P4 in outdoor PCB is high voltage about 310V
The voltage in P6 in outdoor PCB is high voltage about 310V