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Service Manual - Page 3
... type T2 10℃~35℃ -7℃~35℃ ~35℃
T3 21℃~52℃ -7℃~52℃ ~52℃
1.3 Operating Range of Air Conditioners
Temp. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
1.DESCRIPTION OF PRODUCTS & FEATURES
1.1. Mode
Rated
Indoor
DB ℃
27
Cooling
WB ℃
19
Outdoor
DB ℃
35
WB ℃
24...
Service Manual - Page 4
.... Benefit for you.
Long-life& high efficiency air purify filter Low temperature cooling realized, super low temperature heating realized.
Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
1.4 Product features Adopt the much friendlier refrigerant R410a
The air conditioner system adopts the greatly friendly refrigerant R410a, which can be fixed with a weekly...
Service Manual - Page 5
.... maintenance panel installation
trial running and adjustment
hand over
5 Air purging by refrigerant is approximately 1.6 times higher than R22. Use piping material of R410A is prohibited seriously 2. Always inspect the used refrigerant 2. Use a special vacuum pump with reverse check mechanism
1. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA...
Service Manual - Page 6
... of special tools (* symbol).
Additional refrigerant: Charge a suitable amount of refrigerant piping to the
refrigerant. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
■Piping material
1. Refrigerant piping: Observe the basics of refrigerant with
Vacuum drying
adapter)
Electronic scale
Refrigerant
additional
Gas leakage detector
Gas leakage...
Service Manual - Page 8
... Area
m²
Temp. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Item
Model
Function
Capacity
kW
Sensible heat ratio
Total power input
W
Max. scope
℃
43-60
Dimension
External Package
（L×W×H） mm×mm×mm （L×W×H） mm×mm×mm
775x640x245 901x341x712
Refrigerant control method
mm/mm...
Service Manual - Page 10
... may cause electrical shock or fire hazard. INSTRUCTIONS: These information can be checked at hand ...manual should be checked for a long time, the base should be at any time when needed. If any damages.
Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
3. If the conditioner...repairment may cause water leak, electrical shock and fire hazard.
1000
Service Manual - Page 11
... be responsible for them.
Incorrect installation may cause shock.
Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
WARNING!
Don't operate the air-conditioner with inflammable gases because the inflammable gases near to the gas pipe, water pipe, lightning rod or phone line, in order to prevent the refrigerant from leaking. Earthing
Use discharge...
Service Manual - Page 14
... heavy snowfall in the winter time. Edging
2.
Installation Instructions
1. Place surrounded at the same time, obtain a consent from the
Air outlet
unit top
L1
(4) Don't block the surroundings of electric wires from other heat sources. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
5. Place where the air outlet may not be discharged. Place where...
Service Manual - Page 17
...Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Electric wiring
WARNING! Precautions for the indoor unit is supplied by authorized personnel. Do not connect more than 2% voltage drop.)
Item
Circuit breaker
Model...wires with the indoor units, see the corresponding indoor operation and instruction manual. INTERCONNECTING WIRES MUST BE WIRED ACCORDING TO FIG.1 INCORRECT WIRING...
Service Manual - Page 22
...22 Ensure that the hole is led out from the rear, make a hole as follows:
PREPARING INDOOR UNIT INSTALLATION FIRST REMOVE THE INTAKE GRILL
A. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
5.2.2 AC122ACERA
INSTALLATION PROCEDURE Install the room air conditioning unit as Fig.4, at the position shown.
(Fig. 4)
Wall 7cm Indoor unit
6mm outdoor unit
2. FLOOR...
Service Manual - Page 41
...
34
Alarm and stop if detect Td-Tci=25 last for 1min
Lack off refrigerant or discharge side dirty
11101
after compressor has started for 10min in cooling mode...-up abnormal
17
Compressor parameter error
10010
Wrong compressor parameter is selected in one hour
41 Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
Trouble description
Display of LED borad Analyze...
Service Manual - Page 58
...Communication error between indoor and outdoor units indoor unit troubleshooting
compressor can not startup after compressor is running, compressor discharging temperature is eliminated no
check if discharging temp. Commercial Air Conditioner Model: AU122AEERA AB122ACERA
AC122ACERA AD122ALERA
3) Outdoor DC motor abnormal Alarm condition: outdoor DC motor is normal
yes
replace sensor
replace...
Service Manual - Page 60
Commercial Air Conditioner
10) Communication failure between outdoor PCB and module outdoor indicator flashes 22 times
Model: AU122AEERA AB122ACERA AC122ACERA AD122ALERA
no compressor not start up, outdoor alarms, check if there is other failure
yes no
check if the wiring between outdoor PCB and module is correct yes
replace PCB
eliminate other failures adjust wiring
no...
Operation Manual - Page 3
... centers and waste paper disposal services nearest to be put into smaller pieces and given to be taken to unplug the air conditioner before opening inlet grill. Damaged air conditioners are not to your new air
Installation shall be properly grounded in accordance with the relative instructions set forth in the User's Guide.
All electrical repairs must be carried out
All...
Operation Manual - Page 21
... be prepared in field.
50~100
19
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(3) Install a suspending bolt. (Use a M10 bolt) To support the unit weight, anchor bolt shall be used to ensure a smooth surface and to prevent vibration. Connect all pipings (refrigerant, water drainage), wirings (inter unit cable) to paper pattern...
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