Frigobox HKEB-HCNB-261-X User manual

SERVICESERVICE
MANUALMANUAL
SPLIT TYPE AIR CONDITIONERSPLIT TYPE AIR CONDITIONER
CONTENTS
1.PART NAMES AND FUNCTIONS...................
2.SPECIFICATION............................................
3.OUTLINES AND DIMENSIONS.......................
4.WIRING DIAGRAM.........................................
5.REFRIGERANT SYSTEM DIAGRAM...............
6.CONTROL MODE ................................
7.SERVICE FLOW CHART......................................
8.ELECTRIC .CONTROL.............................
9.SENSOR PARAMETER................................
10.DISASSEMBLY INSTRUCTIONS...................
11.PARTS LIST.................................................
HKEB-HCNB-261-X
HKEB-HCNB-351-X

1. PART NAMES AND FUNCTIONS
1.Diagram of Structure
This air conditioner consists of an indoor unit and an outdoor unit. You can
control the air conditioner with the remote controller.
NOTE
Air Intake
Air Outlet
Remote Controller
Refrigerant Tubes
Outdoor(Condensing)Unit
Drain Hose
Air from the room is drawn into this section and passes
through air filters which remove dust.
Conditioned air is blown out of the air conditioner through
the air outlet.
The wireless remote controller controls power ON/OFF,
operation mode selection, temperature, fan speed, timer
setting, and air sweeping.
The indoor and outdoor units are connected by copper
tubes through which refrigerant gas flows.
The outdoor unit contains the compressor, fan motor, heat
exchanger coil, and other electrical components.
Moisture in the room condenses and drains off through this hose
Air filter
Air outlet
Impeller
Blue backlight LCD screen
Indoor sensor
Remote controller
Tubes and cable
Drain hose
Air inlet (rear and side)
Air outlet
Water drainage
Indoor unit
Outdoor unitt
Air intake
Appearance of the indoor may differ from some the picutres in the manual.

2 2、 、S SP PE EC CI IF FI IC CA AT TI IO ON N
NOTE :Test conditions：Cooling : Indoor:DB27℃/ WB19℃Heating: Indoor:DB20℃/ WB15℃
Outdoor DB35℃/ WB24℃Outdoor DB7℃／ WB 6℃
Model HKEB -HCNB -261X
Function Cooling Heating
Power supply 220-230V～50Hz
Capacity kW2.5 (0,39-3,2) 3.1 (0,40-3,53)
Dehumidification l /h 1.5
Capacity
Air flow m3/h 800 800
Power outlet A16
Running current A3.54/5.89 4.8/8.08
Power input kW0.53 (0,3-1,05) 0.66 (0,3-1,25)
Auxiliary heater A(KW) --
Starting current A --
Power factor %90％
Electrical data
Compressor motor current A--
Coefficient of performance(C.O.P) 4.7/4.7
Model DA91A1F-22FD
Output W750
Compressor
Winding resistance (at20℃）Ω1.10
Model SIC-37CV-F835-1Indoor
fan motor Winding resistance (at20℃） Ω －
Model DR-8938-504A-GOutdoor
fan motor Winding resistance (at20℃） Ω －
Width mm 870
Height mm 225 Indoor unit
Depth mm 305
Width mm 800
Height mm 565
Dimensions
Outdoor unit
Depth mm 260
Indoor unit kg 11Weight
Outdoor unit kg 34.5
Liquid pipe mm 6.35Refrigerant
piping Gas pipe mm 9.52
Air direction 6
Indoor unit dB 46Sound level
(Hi) Outdoor unit dB 53
Indoor unit rpm 1200Fan speed
(Hi) Outdoor unit rpm 760
Refrigerant filling capacity(R410A)kg 1.15
RT1(at25℃） kΩ5
RT2(at25℃） kΩ5
Special remarks
Sensor
RT3(at0℃） kΩ16.44

2 2、 、S SP PE EC CI IF FI IC CA AT TI IO ON N
NOTE :Test conditions：Cooling : Indoor:DB27℃/ WB19℃Heating: Indoor:DB20℃/ WB15℃
Outdoor DB35℃/ WB24℃Outdoor DB7℃／ WB 6℃
Model HKEB - HCNB - 351 X
Function Cooling Heating
Power supply 220-230V～50Hz
Capacity kW3.5 (0,39-3,98) 4.0 (0,4-4,49)
Dehumidification l /h 1.5
Capacity
Air flow m3/h 800 800
Power outlet A16
Running current A4.75/7.0 5.62/9.5
Power input kW0.98 (0,3-1,3) 0.94 (0,3-1,6)
Auxiliary heater A(KW) --
Starting current A --
Power factor %90
Electrical data
Compressor motor current A--
Coefficient of performance(C.O.P) 3.57/4.26
Model DA91A1F-22FD
Output W750
Compressor
Winding resistance (at20℃）Ω1.10
Model SIC-37CV-F835-1Indoor
fan motor Winding resistance (at20℃） Ω －
Model DR-8938-504A-GOutdoor
fan motor Winding resistance (at20℃） Ω －
Width mm 870
Height mm 225 Indoor unit
Depth mm 305
Width mm 800
Height mm 565
Dimensions
Outdoor unit
Depth mm 260
Indoor unit kg 11Weight
Outdoor unit kg 34.5
Liquid pipe mm 6.35Refrigerant
piping Gas pipe mm 9.52
Air direction 6
Indoor unit dB 46Sound level
(Hi) Outdoor unit dB 53
Indoor unit rpmFan speed
(Hi) Outdoor unit rpm
Refrigerant filling capacity(R410A)kg 1.15
RT1(at25℃） kΩ5
RT2(at25℃） kΩ5
Special remarks
Sensor
RT3(at0℃） kΩ16.44

5.REFRIGERANT SYSTEM DIAGRAM3.OUTLINES AND DIMENSIONS
HKEB - HCNB 261-351 X

＞２５ｃｍ
＞５ｃｍ
＞１０ｃｍ
Outlet ＞４０ｃｍ
5.REFRIGERANT SYSTEM DIAGRAM
3.OUTLINES AND DIMENSIONS
567.5

4.WIRINGDIAGRAM
ＲＯＯＭＳＥＮＳＯＲ
ＣＯＩＬＳＥＮＳＯＲ
CN101
ＦＩＬＴＥＲＢＯＡＲＤ
ＡＩＲ ＯＵＴＬＥＴＳＥＮＳＯＲ
ＤＩＳＰＬＡＹＢＯＡＲＤ
ＣＯＮＴＲＯＬＢＯＡＲＤ
2
１
１２4
3
346
5
56
CN102
CN401
CN103
CN104
CN105
ＥＶＡＰＯＲＡＴＯＲ
CN701 CN106
2
１
１２4
3
346
5
56
CN201
CN603
CN602
CN606
CN605
CN604
CN609
CN608
CN607
CN701
ＢＲＮ
ＹＬＷ／ＧＲＮ
ＲＥＤ
ＹＬＷ／ＧＲＮ
ＷＨＴ
ＢＬＫ
ＹＬＷ／ＧＲＮ
ＢＬＵ
ＥＶＡＰＯＲＡＴＯＲ
ＨＯＲＩＺＯＮＴＡＬ
ＦＬＡＰＭＯＴＯＲ１
ＨＯＲＩＺＯＮＴＡＬ
ＦｌＡＰ ＭＯＴＯＲ２
ＶＥＲＴＩＣＡＬ
ＦＬＡＰ ＭＯＴＯＲ
ＤＣ ＦＡＮ ＭＯＴＯＲ
ＥＬＥＣＴＲＩＣ ＷＩＲＩＮＧ ＤＩＡＧＲＡＭ ＯＦ ＩＮＤＯＯＲ ＵＮＩＴ
2
1
0
1
0
1
1
1
1
1
0
1
0
1
1
1
1
7
78
8
7
78
7
78
8
4
3
3
4
6
5
5
6
1
1
2
33
44
55
66
43
2 4
3
3
4
6
5
5
6

HKEB HCNB 261 X
(.52)φ９
(6.35)φ
Ｃｏｍｐｒｅｓｓｏｒ
Ｒｅｒｉｇｅｒａｎｔ ｐｉｐｅ
（Ｗｉｔｈ ｈｅａｔ ｉｎｓｕｌａｔｏｒ）
Ｓｅｒｖｉｃｅ ｖａｌｖｅ
Ｉｎｄｏｏｒｔｅｍｐｅｒａｔｕｒｅ
Ｈｅａｔｅｘｃｈａｎｇｅｒ
ｓｅｎｓｏｒ
Ｆｌａｒｅ ｃｏｎｎｅｃｔｉｏｎ
Ｒｅｆｒｉｇｅｒａｎｔ ｐｉｐｅ
（Ｗｉｔｈ ｈｅａｔ ｉｎｓｕｌａｔｏｒ）
Ｆｌａｒｅ ｃｏｎｎｅｃｔｉｏｎ
Ｓｅｒｖｉｃｅ ｖａｌｖｅ
ＩＮＤＯＯＲＵＮＩＴ
Ｈｅａｔｅｘ ｃｈａｎｇｅｒ
ＯＵＴＤＯＯＲＵＮＩＴ
Ｍｕｆｆｌｅｒ
Ｄｅｓｉｃｃａｔｉｏｎｆｉｌｔｅｒ
４－ｗａｙ ｖａｌｖｅ
Ｈｅａｔｉｎｇ ｃｙｃｌｅ
Ｃｏｏｌｉｎｇ ｃｙｃｌｅ
ｓｅｎｓｏｒ
Ｉｎｄｏｏｒｃｏｉｌ
Ｍｕｆｆｌｅｒ
Ｓｔｒａｉｎｅｒ φ×５1.500
Ｃａｐｉｌｌａｒｙ ｔｕｂｅ
φ×５1.500
Ｓｔｒａｉｎｅｒ
Electric expansion valve
HKEB HCNB 351 X

Limitations to refrigerant piping length and height difference
Maximum allowed refrigerant piping length (single line) and height difference
Models
HKEB-HCNB 261X
HKEB-HCNB 351X
Max. piping length
(m), single line: APiping diameter (mm)
Liquid side Gas side
9.52
6.35
9.52
6.35
Height Difference (m)
Indoor Unit above Indoor unit below
15
15
7
7
7
7
Max. allowed
height difference:
7 metres
Max. refrigerant piping length (A): 15 metres
Indoor
Unit
Outdoor
Unit
Additional refrigerant charge (R410A refrigerant)
Models
HKEB-HCNB 261X
HKEB-HCNB 351X
Precharged amount
(g) up to 7 metres
1150
1150
Additional R410A charge according to piping length
7m
0g
0g
10m
75g
75g
15m
200g
200g
Calculation of the additional refrigerant charge: R410A g = [(A-7) meters x 25g/m]
Temperature range for regular operation:
Outdoor air temperature: • In Cooling mode: +16°C ~ +43°C
• In Heating mode: -15°C ~ +30°C
If this appliance is operated under temperature conditions out of the above specified temperature range, this may result
in malfunction and/or operation could stop due to intervention of built-in protective functions.
5.REFRIGERANT SYSTEM DIAGRAM

EVACUATION PROCEDURES
Connect the refrigerant pipes (both the liquid and gas
pipes) between the indoor and the outdoor units.
Remove the service port cap of the stop valve on the side of the
outdoor unit gas pipe. (The stopvalvewill notworkin its initial
state fresh out of the factory (totally closed with cap on).
Connect the gage manifold valve and the vacuum pump to the service port ofthe stop valve on the gaspipe
side of the outdoor unit.
Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gage indicates
-0.1 Mpa (-76 cmHg).
Check the vacuum with the gage manifold valve, then close the gage manifold valve, and stop the
vacuum pump.
Leave it as is for one or two minutes .Make sure thepointer of the gage manifold valve remains in the.
same position.
Close
Open
Hexagonal
wrench
Stop valve pipe
Connection
Gage manifold valve
Stop valve Liquid pipe
Stop valve
Hexagonal
wrench
Gas pipe
Caps
Service port
Vacuum pump
Remove thegage manifold valvequickly from the service port of the stopvalve.
After refrigerant pipes are connected and evacuated, fully open all stop valves
on gas and liquid pipe sides.
Operating without fully opening lowers the performance and causes trouble.
£º
Pipe length
7m maximum
No gas charge is
needed.
Pipe length
exceeding 7m
Charge the prescribed
amount of gas.
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
5.REFRIGERANT SYSTEM DIAGRAM

6.CONTROL MODE
1.Functional features
1.1 The compressor’ s motor system is fitted with DC brushless sensor without position, with
reliable and efficient performance;
1.2 The indoor and outdoor air supply motor is of built-in DC brushless type.
1.3 Throttle control by electronic expansion valve.
2Main controlling functions
2.1 Controlling functions of the remote controller (see operation and installation manual)
2.2 Display icons of the indoor unit
Indicating lights
“ Simultaneous Operation Power Limitation” indicator: When the “ simultaneous
operation power limitation” function is started, this light goes on.
“ Timing” indicator: It goes on when “ timing” is selected.
“ Sleep” indicator: It goes on when “ sleep” is selected.
“ Night” indicator: No available for this unit.
Room temperature display
Fre
1-30（Hz）S1
31-50（Hz）S1S2
51-70（Hz）S1S2S3
71-90（Hz）S1S2S3S4
91（Hz）S1S2S3S4S5。
Room temperature is displayed in the “House”: The actually measured temperature of the unit
body or the remote controller is displayed.
Outdoor temperature display:
The outdoor temperature is displayed when detected by the outdoor unit. Otherwise, there is no
display.
Working mode display
During operation, such information as cooling, heating, dehumidifying is displayed. When the air
conditioner works in the Automatic Mode, the Auto icon, as well as the cooling/heating
information is displayed.
Fan speed display
The three blades of high, medium and low speeds are shown at the same time. “A” is displayed
when Auto Speed is selected.
Left and right swinging display
S1 S2 S3 S4 S5

6.CONTROL MODE
Surrounding air: K0, K1, K2, K4, K5
Directional air: Left K0, K1, K2, K3
Directional air: Right K0, K3, K4, K5
Directional air: Center K0, K2, K3, K4
Swinging air: K0K1, K0K2, K0K3 respectively according to the actual working status
Error message
Press the Emergency button for over 5 seconds when the power is on, the air conditioner will give
out alarm as follows: indoor unit trouble at the indoor temperature reading area and outdoor unit
trouble at the outdoor temperature area; the message is blinking at a frequency of 1Hz.
3.Temporary switch
3.1 If the remote controller is missing, press the temporary switch and the system starts in the
automatic mode, press the switch again to stop the system. Automatic mode follows:
A indoor temperature>２６℃ ｃｏｏｌｉｎｇ ｍｏｄｅ ｔｅｍｐｅｒａｔｕｒｅ ｓｅｔｔｉｎｇ ２６℃
B indoor temperature>２３℃ ｈｅａｔｉｎｇ ｍｏｄｅ ｔｅｍｐｅｒａｔｕｒｅ ｓｅｔｔｉｎｇ ２６℃
C ２３℃≤indoor temperature≥２６℃ ｆａｎ ｍｏｄｅ
Ｉｎｄｏｏｒ ｆａｎ ｓｐｅｅｄ ｉｓ ａｕｔｏｍａｔｉｃ ｉｎ ａｕｔｏｍａｔｉｃ ｍｏｄｅ．
3.2 Hold down the temporary switch for 5 seconds or longer and the system is forced to run in the
cooling mode regardless of indoor temperature.
3.3. How to start the outdoor unit without the indoor unit
Short-circuit the two CN404 terminals on the IPM board of the outdoor unit, and switch on
the power, the air conditioner will start heating operation, and the outdoor fan is working; then
open the short circuit, the air conditioner will start cooling operation (the compressor starts 50
seconds later), and the fan is still working. Cut off the power, the outdoor unit will stop running.
4.Control mode
4.1 Automatic
4.1.1 When the air conditioner is switched on and the remote controller is set to Auto mode, the
air conditioner will select running modes automatically according to the difference
between the room temperature and the setting temperature.
4.1.2 The running mode will be set when the machine is first switched on. Once set, the
running mode cannot be changed within 30 minutes.
4.1.3 If the difference between the room temperature and the setting temperature exceeds 3
degrees, change the running mode immediately.
4.1.4 If the machine is turned off and restarted using the remote controller, the above conditions
are still good.
4.1.5 If the machine is powered off and restarted, the running mode must be re-selected.
4.1.6 The running frequency will be determined by the temperature difference.
4.2 Cooling
4.2.1 In the cooling mode, the preset temperature is determined by the remote controller. The
temperature range is 16℃—30℃.

6.CONTROL MODE
4.2.2 The compressor will start immediately when the machine is first powered on; it will take at
least 3min for the compressor to restart if the machine is restarted.
4.2.3 The fan speed changes in auto mode.
Tsetting-Tindoor Fan speed Tsetting-Tindoor Fan speed
1℃Low 1℃Low
2℃Low 2℃Mid
3℃Mid 3℃Mid
4℃Mid 4℃High
Temperature
difference
≥5℃High
Temperature
difference
≥5℃High
4.2.4Compressor control
The running frequency of the compressor depends on the difference between the set
temperature and the detected room temperature. The larger the difference, the higher the frequency.
When the room temperature is lower than the set temperature, the compressor stops running
(provided the compressor keeps running for more than 5 minutes).
Min Max Rated Frequency.
15 100 42
4.3 Outdoor fan
One-speed, which runs simultaneously with the compressor.
4.4 Cooling overload
When Texternal coil ≥７０℃, the compressor stops. When T external coil ≤５０℃， the air conditioner
starts automatically in 3 minutes.
4.5 Anti-freezing function, the anti-freezing and frequency limiting functions of the evaporator
are effective:
When T coil ＞ １０℃, the working frequency of the compressor is not limited;
When T coil ＜ ７℃, the working frequency of the compressor begins dropping;
When Tinternal coil ＜-1℃ ｆｏｒ ３ minutes, the indoor fan works normally after the compressor is
shut down.
When Tinternal coil ≥7℃ and the compressor has stopped working for 3 minutes, the compressor
will restart running.
4.6 Current protection
ｉｓ ｔｈｅ ｎｏｒｍａｌ ｗｏｒｋｉｎｇ ｃｕｒｒｅｎｔ ｖａｌｕｅ ｏｆ Ｅ２ＲＯＭ，Ｉｍａｘ ｉｓ ｔｈｅ ｃｅｉｌｉｎｇ ｃｕｒｒｅｎｔ ｖａｌｕｅ ｏｆ
Ｅ２ＲＯＭ．

6.CONTROL MODE
Ｉ ＜ ＩＯ－１．５Ａ Ｗｉｔｈｏｕｔ ｌｉｍｉｔａｔｉｏｎ．
Ｉ＞ＩＯ＋１．５Ａ Ｆｒｅｑｕｅｎｃｙ ｄｒｏｐｓ．
Ｉ≥Ｉｍａｘ Ｏｐｅｒａｔｉｏｎ ｓｔｏｐｓ．
５． Dehumidification
5.1 In the dehumidification mode, the temperature is determined by the remote controller. The
temperature range is 16℃—30℃. The controller will determine the running mode according
to the indoor and outdoor temperature difference.
５．２ When the room temperature is 2℃higher than the preset temperature, cooling run will be
５．３ Ｔ
ｓｅｔ ｔｅｍｐｅｒａｔｕｒｅ –Ｔ ｒｏｏｍ ｔｅｍｐｅｒａｔｕｒｅ ≥１℃ Ｔｈｅ ｃｏｍｐｒｅｓｓｏｒ ａｎｄ ｔｈｅ ｏｕｔｄｏｏｒ ｆａｎ ｓｔｏｐ ｗｏｒｋｉｎｇ，
ａｎｄ ｔｈｅ ｉｎｄｏｏｒ ｆａｎ ｒｕｎｓ ａｔ ａ ｓｐｅｅｄ ｏｆ ６００ ｒｐｍ．
６．Ｈｅａｔｉｎｇ
６．１ Ｗｈｅｎ Ｔｉｎｔｅｒｎａｌ ｃｏｉｌ≥３８℃， ｔｈｅ ｉｎｄｏｏｒ ｆａｎ ｗｏｒｋｓ ｉｎ ａｃｃｏｒｄａｎｃｅ ｗｉｔｈ ｔｈｅ ｓｅｔｔｉｎｇ ｏｆ
ｔｈｅ ｒｅｍｏｔｅ ｃｏｎｔｒｏｌｌｅｒ．
Tsetting-Tindoor Fan speed Tsetting-Tindoor Fan speed
1℃Low 1℃Low
2℃Mid 2℃Low
3℃Mid 3℃Mid
4℃Mid 4℃Mid
5℃High 5℃Mid
Temperature
difference
≥6℃High
Temperature
difference
≥6℃High
６．２ Current protection
ＩＯｉｓ ｔｈｅ ｎｏｒｍａｌ ｗｏｒｋｉｎｇ ｃｕｒｒｅｎｔ ｖａｌｕｅ ｏｆ Ｅ２ＲＯＭ，Ｉｍａｘ ｉｓ ｔｈｅ ｃｅｉｌｉｎｇ ｃｕｒｒｅｎｔ ｖａｌｕｅ
ｏｆ Ｅ２ＲＯＭ．
Ｉ ＜ ＩＯ－１．５Ａ Ｗｉｔｈｏｕｔ ｌｉｍｉｔａｔｉｏｎ．
Ｉ＞ＩＯ＋１．５Ａ Ｆｒｅｑｕｅｎｃｙ ｄｒｏｐｓ．
Ｉ≥Ｉｍａｘ Ｏｐｅｒａｔｉｏｎ ｓｔｏｐｓ．
6.3 Defrosting
6.3.1 The defrosting is done through changing the flow direction of refrigerant inside of the
four-way valve.
6.3.2 Defrosting conditions:
Continuous heating run for more than 30min
During single machine operation, T outdoor –T outdoor coil ≥12℃and lasts 8minutes
6.3.3 Defrosting process:
Compressor and outdoor fan motor off →four-way valve off →compressor on →
defrosting conditions met →compressor off →four-way valve on →compressor on →
outdoor fan on →end
6.3.4 Overhot protection for the indoor heat exchanger

6.CONTROL MODE
When the temperature of the indoor coil≥78℃, the compressor will stop;
When the temperature≥63℃, the outdoor flow speed will turn to the low speed, and the
compressor runs at the descending frequency;
When the temperature＜58℃, the compressor will prohibit the frequency from rising.
7. Air cleaning
The outdoor unit doesn’t work in this mode, and the indoor fan runs in cooling mode.
8.Protection
8.1 Abnormal sensor: when the sensor is short circuited or cut off, the compressor will stop, and
the trouble code will be displayed.
8.2. IPM error
In the case of IPM abnormalities, e.g. overheat (100℃）， ｏｖｅｒｃｕｒｒｅｎｔ （１７Ａ）， ｏｒ ｌｏｗ ｄｒｉｖｉｎｇ
ｖｏｌｔａｇｅ （ｂｅｌｏｗ １２Ｖ）， ｂｏｔｈ ｔｈｅ ｃｏｍｐｒｅｓｓｏｒ ａｎｄ ｔｈｅ ｏｕｔｄｏｏｒ ｆａｎ ｓｔｏｐ ｒｕｎｎｉｎｇ， ａｎｄ ｔｈｅ
ｃｏｒｒｅｓｐｏｎｄｉｎｇ ｅｒｒｏｒ ｃｏｄｅ ｉｓ ｄｉｓｐｌａｙｅｄ．
8.3 Temperature protection for the compressor exhaust
When the compressor exhaust temperature ＜93℃, the compressor runs at the ascending
frequency;
When the temperature ≥93℃, and ＜115 ℃the compressor runs at the limit to the frequency
ascending;
When the temperature ＞115 ℃, the compressor stops.
8.4Abnormal power supply voltage protection
When the supply voltage is above 260V or below 150V, the compressor stops, and the trouble
code is displayed.
8.5No load protection
Measure the total current. When the current in the outdoor unit is lower than 0.15A, the
compressor will stop operation and no load protection error is displayed.
8.6 . Economical running
During economical run (this function is set on the remote controller), the working current will be
limited (to 60% of the max working current).
9 Automatic control of the electronic expansion valve
9.1 Power-on reset
Upon power-on reset, the expansion valve shuts off for 600 seconds first, and then opens to
a degree fit for the frequency.
9.2 The expansion valve regulates according to the outlet air temperature of the compressor.
Compressor rotor position signal not available
There is an LED indicator on the IPM board of the outdoor unit. During operation of the
compressor, the LED blinks to indicate frequency restriction conditions of the compressor.

6.CONTROL MODE
Content of trouble Indoor display code
Indoor sensor trouble １
Evaporator sensor trouble ２
Evaporator freezing ３
Over hot of indoor heat exchanger ４
Communication trouble ５
Over current of compressor 7
Fan motor trouble ８
Indoor EEPROM 13
Outdoor sensor trouble 21
OUTDOOR
Outdoor sensor trouble 1
Outdoor coil sensor trouble 2
Discharge sensor 3
Compressor position 4
Communication trouble 5
Over current of whole system 6
No load 7
Abnormal power voltage 8
Compressor start-up failure 9
Higher outdoor exchange tempreture 10
Defrosting 11
IPM trouble 12
Data failure of outdoor E2PROM 13
Outdoor Fan 15
1. Normal operation, no frequency restriction.
2. Power voltage restriction.
3. Condenser temperature restriction.
4. Total current restriction.
5. Outlet air temperature restriction.
6. Indoor heat exchange temperature restriction for cooling operation.
7. Indoor fan speed restriction.
8 AD interface frequency conversion restriction.

Ｓｗｉｔｃｈ ｏｎ ｔｈｅ ｐｏｗｅｒ
ｓｕｐｐｌｙ
Ｙｅｓ
Ｃｈｅｃｋ ｔｈｅ
ｒｅｓｕｌｔ
Ｄｉｓｐｌａｙ ｂｏａｒｄ
ｐｒｏｌｅｍ
Ｙｅｓ
Ｎｏ
Ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ Ｉｓ ｆａｕｌｔｙ
ｒｅｐｌａｃｅ ｉｔ
Ｃｈｅｃｋ ａｌｌ ｗｉｒｅｓ
ａｒｅ ｃｏｎｎｅｃｔｅｄ
ｃｏｒｒｅｃｔｌｙ
Ｓｔａｒｔ ｕｐ ｓｅｌｆ－ｔｅｓｔ
ｆｕｎｃｔｉｏｎ
Ｒｅｐｌａｃｅ ｔｈｅ ｂａｔｔｅｒｙ
ｐｒｅｓｓ ＲＥＳＥＴ
ｂｏｔｔｏｎ ，ｒｅｔｒｙ ｒｅｍｏｔｅ
ｏｐｅｒａｔｉｏｎ ａｎｄ
ｒｅｐｌａｃｅ ｒｅｍｏｔｅ
Ｙｅｓ
Ｄｉｓｐｌａｙ ｂｏａｒｄ
ｐｒｏｂｌｅｍ
Ｎｏ
Ｙｅｓ
Ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｉｓ ｔｈｅ ｆｕｓｅ
ｂｌｏｗｎ？
Ｙｅｓ
Ｃｈｅｃｋ ａｎｄ ｆｉｎｄ ｓｈｏｒｔ
ｃｉｒｃｕｉｔ ｏｒ ｏｐｅｎ ｃｉｒｃｕｉｔ
ａｍｏｎｇ ｏｔｈｅｒ ｃｏｍｐｏｎｅｎｔｓ ｓｕｃｈ
ａｓ ｆａｎ ｍｏｔｏｒ？
Ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｆａｕｌｔｙ
Ｅｒｒｏｒ ｃｏｄｅ １
Ｉｎｄｏｏｒ ｔｅｍｐｅｒａｔｕｒｅ
ｓｅｎｓｏｒ ｔｒｏｕｂｌｅ
Ｅｒｒｏｒ ｃｏｄｅ ２
Ｉｎｄｏｏｒ ｃｏｉｌ
ｓｅｎｓｏｒ ｔｒｏｕｂｌｅ
Ｄｏｅｓ ＬＣＤ ｓｃｒｅｅｎ
ｄｉｓｐｌａｙ Ｎｏｒｍａｌｌｙ？
Ａｒｅ ｔｈｅ
ｗｉｒｅｓ
ｐｏｏｒｌｙ
ｃｏｎｎｅｃｔｅｄ？
Ｄｏｅｓ ｉｔ ｒｅｃｅｉｖｅ
ｔｈｅ ｒｅｍｏｔｅ
ｃｏｎｔｒｏｌ ｓｉｇｎａｌ？
Ｉｓ ｔｈｅ ｒｅｍｏｔｅ
ｃｏｎｔｒｏｌｌｅｒ ｉｎ
ｇｏｏｄ ｃｏｎｄｉｔｉｏｎ ？
Ａｆｔｅｒ ｒｅｐｌａｃｉｎｇ
ｔｈｅ ｄｉｓｐｌａｙ
ｂｏａｒｄ，Ｉｓ ｔｈｅｒｅ
ｓｔｉｌｌ ｔｒｏｕｂｌｅ？
Ｒｅｐｌａｃｅ ｔｈｅ
ｉｎｄｏｏｒ ｂｏａｒｄ，Ｉｓ
ｔｈｅｒｅ ｓｔｉｌｌ
ｔｒｏｕｂｌｅ？
Ｉｓ ｉｎｄｏｏｒ
ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｓｈｏｒｔ
ｃｉｒｃｕｉｔ？
Ａｆｔｅｒ ｒｅｐｌａｃｉｎｇ
ｔｈｅ ｄｉｓｐｌａｙ
ｂｏａｒｄ，Ｉｓ ｔｈｅｒｅ
ｓｔｉｌｌ ｔｒｏｕｂｌｅ？
Ｎｏ
Ｙｅｓ
Ｙｅｓ
Ｙｅｓ
Ｙｅｓ
Ｎｏ
Ｎｏ
Ｎｏ
Ｍｅａｓｕｒｅ
ｒｅｓｉｓｔａｎｃｅ
ｂｅｔｗｅｅｎ
ＣＮ６０７ ①
ａｎｄ②
Ｍｅａｓｕｒｅ
ｒｅｓｉｓｔａｎｃｅ
ｂｅｔｗｅｅｎ
ＣＮ６０８ ①
ａｎｄ②
Ｄｏｅｓ ｔｈｅ
ｒｅｓｉｓｔａｎｃｅｓ ｏｆ
ｔｈｅｒｍｉｓｔｏｒ ｈａｖｅ
ｔｈｅ
ｃｈａｒａｃｔｅｒｉｓｔｉｃｓ ｏｎ
ｐａｇｅ ３１
Ｒｅｐｌａｃｅ ｔｈｅ
ｔｈｅｒｍｉｓｔｏｒ
Ｃｏｎｎｅｃｔ ＣＮ６０７ ａｎｄ
ＣＮ６０８、ＣＮ６０９．
Ｔｕｒｎ ＯＮ ｔｈｅ ｐｏｗｅｒ
ｓｕｐｐｌｙ ａｎｄ ｐｒｅｓｓ
ｔｈｅ ＥＭＥＲＧＥＮＣＹ
ＯＰＥＲＡＴＩＯＮ ＳＷＩＴＣＨ
Ｒｅｐｌａｃｅ ｔｈｅ
ｉｎｄｏｏｒ ｂｏａｒｄ
Ｏｋ ＊１
Ｄｏｅｓ ｔｈｅ
ｕｎｉｔ
ｏｐｅｒａｔｅ １０
ｍｉｎｕｔｅｓ ｏｒ
ｍｏｒｅ？
＊１ Ｄｅｆｅｃｔｉｖｅ ｃｏｎｔａｃｔ ｏｆ ｔｈｅ ｃｏｎｎｅｃｔｏｒ ｉｓ ｃｏｎｓｉｄｅｒｅｄ
Ｙｅｓ
Ｙｅｓ
Ｎｏ
Ｎｏ
Ｎｏ
Ｎｏ
Ｎｏ
7.SERVICE FLOW CHART
Ｅｒｒｏｒ ｃｏｄｅ ７
Ｉｎｄｏｏｒ ａｉｒ ｏｕｔｌｅｔ
ｓｅｎｓｏｒ ｔｒｏｕｂｌｅ
Ｍｅａｓｕｒｅ
ｒｅｓｉｓｔａｎｃｅ
ｂｅｔｗｅｅｎ
ＣＮ６０９ ①
ａｎｄ②

Ｏｃｃｕｒ ｂｙ ｃｈａｎｃｅ
Ｅｒｒｏｒ ｃｏｄｅ ３
Ｉｎｄｏｏｒ ｈｅａｔ ｅｘｃｈａｎｇｅｒ
ｉｓ ｉｃｅｄ ｕｐ
Ｎｏ Ｉｎｄｏｏｒ ｃｏｉｌ ｓｅｎｓｏｒ ｆａｕｌｔｙ，ｒｅｐｌａｃｅ ａｎｄ
ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｙｅｓ
Ｓｗｉｔｃｈ ｔｏ ｈｅａｔ ｏｐｅｒａｔｉｏｎ ｔｏ ｄｅｆｒｏｓｔ ｔｈｅ ｈｅａｔ
ｅｘｃｈａｎｇｅ ｃｏｉｌ，ｃｈａｎｇｅ ｂａｃｋ ｔｏ ｃｏｏｌｉｎｇ ａｎｄ
ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ ｆａｕｌｔｙ ，
ｒｅｐｌａｃｅ ｉｔ
Ｎｏｒｍａｌ
ｐｒｏｔｅｃｔｉｏｎ
Ｎｏ
Ｙｅｓ
Ｏｃｃｕｒ ｂｙ ｃｈａｎｃｅＹｅｓ
Ｅｒｒｏｒ ｃｏｄｅ ４
ｉｎｄｏｏｒ ｈｅａｔ ｅｘｃｈａｎｇｅｒ
ｉｓ ｏｖｅｒ ｌｏａｄｅｄ
Ｉｎｄｏｏｒ ｃｏｉｌ ｓｅｎｓｏｒ
ｆａｕｌｔｙ，ｒｅｐｌａｃｅ ａｎｄ
ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｙｅｓ
Ｓｗｉｔｃｈ ｏｆｆ ｔｈｅ ｐｏｗｅｒ，ｓｔａｒｔ ｕｐ ｔｈｅ
ａｉｒ ｃｏｎｄｉｔｏｎｅｒ ｉｎ １０ ｍｉｎｕｔｅｓ
Ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ
ｆａｕｌｔｙ，ｒｅｐｌａｃｅ ｉｔ
Ｙｅｓ
Ｎｏ
Ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ ｆａｕｌｔｙ
ｒｅｐｌａｃｅ ｉｔ
Ｎｏ
Ｎｏｒｍａｌ
ｐｒｏｔｅｃｔｉｏｎ
Ｎｏ
Ｙｅｓ
Ｓｗｉｔｃｈ ｏｆｆ ｔｈｅ ｐｏｗｅｒ，ｒｅｐｌａｃｅ ｔｈｅ
ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ ａｎｄ ｔｈｅｎ
ｓｔａｒｔ ｕｐ ｔｈｅ ａｉｒ ｃｏｎｄｉｔｏｎｅｒ．
Ｓｗｉｃｈ ｏｆｆ ｔｈｅ ｐｏｗｅｒ，ｒｅｐｌａｃｅ ｔｈｅ
ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ ａｎｄ ｔｈｅｎ
ｓｔａｒｔ ｕｐ ｔｈｅ ａｉｒ ｃｏｎｄｉｔｏｎｅｒ．
Ｉｓ ｉｎｄｏｏｒ ｈｅａｔ
ｅｘｃｈａｎｇｅｒ ｉｃｅｄ ｕｐ？
Ｉｓ ｃｏｍｐｒｅｓｓｏｒ
ｓｔｉｌｌ ｒｕｎｎｉｎｇ？
Ｉｓ ｉｎｄｏｏｒ ｈｅａｔ
ｅｘｃｈａｎｇｅｒ
ｆｒｅｅｚｉｎｇ ｕｐ ａｇａｉｎ？
Ｉｓ ｔｈｅ ｓｙｓｔｅｍ
ｉｎ ｇｏｏｄ
ｃｏｎｄｉｔｉｏｎ？
Ｉｓ ｃｏｍｐｒｅｓｓｏｒ
ｓｔｉｌｌ
ｒｕｎｎｉｎｇ？
Ｉｓ ｉｎｄｏｏｒ ｈｅａｔ
ｅｘｃｈａｎｇｅｒ ｖｅｒｙ
ｈｏｔ？
Ｉｓ ｔｈｅ ｓｙｓｔｅｍ
ｉｎ ｇｏｏｄ
ｃｏｎｄｉｔｉｏｎ？
Ｉｓ ｔｈｅ ｓｙｓｔｅｍ
ｉｎ ｇｏｏｄ
ｃｏｎｄｉｔｉｏｎ？
Ｅｒｒｏｒ ｃｏｄｅ ８
ｉｎｄｏｏｒ ｆａｎ ｍｏｔｏｒ ｔｒｏｕｂｌｅ
Ｎｏ
Ｙｅｓ
Ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｆａｕｌｔｙ ａｎｄ ｒｅｐｌａｃｅ ｉｔ
Ｓｅｔ ｔｈｅ ａｉｒ ｃｏｎｄｉｔｉｏｎｅｒ
ｏｐｅｒａｔｅ ｉｎ ｆａｎ ｍｏｄｅ
Ｙｅｓ
Ｎｏ
Ｎｏ
Ｏｃｃｏｒ ｂｙ ｃｈａｎｃｅＹｅｓ
Ｒｅｐａｉｒ ｔｈｅ ｉｎｄｏｏｒ
ｆａｎ ｍｏｔｏｒ
Ｄｏｅｓ ｖｏｌｔａｇｅ ｒｅｐｅａｔ ０Ｖ ＤＣ
ａｎｄ １５Ｖ ＤＣ？
Ｉｓ ｉｎｄｏｏｒ ｆａｎ
ｍｏｔｏｒ
ｒｕｎｎｉｎｇ？
Ｉｎｓｅｒｔ ｓｃｒｅｗｄｒｉｖｅｒ ｉｎｔｏ ｔｏ
ｒｏｔａｔｅ ｉｎｄｏｏｒ ｆａｎ ｍｏｔｏｒ
ｓｌｏｗｌｙ ｆｏｒ １ ｒｅｖｏｌｕｔｉｏｎ ｏｒ
ｏｖｅｒ，ａｎｄ ｍｅａｓｕｒｅ ｖｏｌｔａｇｅ
ＮＯ．６（＋） ａｎｄ ＮＯ．３（－） ｏｎ ＣＮ７０１．
Ｄｏｅｓ ｆａｎ ｍｏｔｏｒ
ｓｔｏｐ ｗｉｔｈ ｔｈｅ
ｒｅｍｏｔｅ
ｃｏｎｔｒｏｌｌｅｒ
Ｄｏｅｓ ｔｈｅ ｓｏｃｋｅｔ ＣＮ７０１ ｏｆ
ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ ｈａｖｅ
ｐｏｗｅｒ ｉｎｐｕｔ（ＤＣ ３１０Ｖ ＡＮＤ ＤＣ
１５Ｖ）
Ｃｈｅｃｋ ｉｆ ｆｉｌｔｅｒｓ
ａｒｅ ｃｌｅａｎ？
Ｃｋｅｃｋ ｉｆ ｌｉｑｕｉｄ
ｌｉｎｅ ｓｔｒａｉｎｅｒ ｉｓ
ｂｌｏｃｋｅｄ？
Ｉｆ ｄｉｒｄｙ，ｗａｓｈ
ｆｉｌｔｅｒｓ
Ｎｏ
Ｙｅｓ
Ｙｅｓ
Ｉｆ ｂｌｏｃｋｅｄ，ｒｅｐｌａｃｅ
ｔｈｅ ｓｔｒａｉｎｅｒ
Ｎｏ
Ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
7.SERVICE FLOW CHART
Ｎｏ
Ｙｅｓ
Ｎｏ

Ｅｒｒｏｒ ｃｏｄｅ ５
ｃｏｍｍｕｎｉｃａｔｉｏｎ
ｐｒｏｂｌｅｍ
Ｃｏｎｎｅｃｔ ｔｈｅ ｉｎｄｏｏｒ
ａｎｄ ｏｕｔｄｏｏｒ ｕｎｉｔ
ａｇａｉｎ ａｃｃｏｒｄｉｎｇ ｔｏ
ｔｈｅ ｗｉｒｉｎｇ ｄｉａｇｒａｍ
Ｙｅｓ
Ｙｅｓ
Ｒｅｐｌａｃｅ ｔｈｅ ｏｕｔｄｏｏｒ
ｃｏｎｔｒｏｌ ｂｏａｒｄ ａｎｄ
ｓｔａｒｔ ｕｐ ａｇａｉｎ
Ｏｕｒｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ ｔｒｏｕｂｌｅ
Ｙｅｓ
Ｎｏ
Ｉｎｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ ｆａｕｌｔ，
ｒｅｐｌａｃｅ ｉｔ
Ｎｏ
Ｎｏ
Ｔｈｅｒｅ ｉｓ ａ ｓｈｏｒｔ ｃｉｒｃｕｉｔ
ｂｅｈｉｎｄ ｔｈｅ ｓｔａｒｔｕｐ
ｒｅｓｉｓｔｏｒ
Ｔｈｅ ＩＰＭ．ｃｏｎｔｒｏｌ
ａｎｄ ｗａｖｅ ｆｉｌｔｅｒ
ｂｏａｒｄ Ｉｓ ｆａｕｌｔｙ
ｏｒ ｓｈｏｒｔ
ｃｉｒｃｕｉｔｅｄ
Ｎｏ
Ｎｏ
Ｙｅｓ Ｙｅｓ Ｒｅｐｌａｃｅ ｉｔ
Ｎｏ
Ｎｏ
Ｎｏ
Ｉｎｄｏｏｒ ＦＩＬＴＥＲ ｂｏａｒｄ
ｆａｕｌｔｙ ｒｅｐｌａｃｅ ｉｔ
Ｙｅｓ Ｃｏｎｎｅｃｔｉｏｎ ｗｉｒｅ ｆａｕｌｔ，ｔｉｇｈｔｅｎ ａｎｄ
ｃｈｅｃｋ
Ｙｅｓ Ｃｏｎｎｅｃｔｉｏｎ ｗｉｒｅ ｆａｕｌｔ，ｔｉｇｈｔｅｎ ａｎｄ
ｃｈｅｃｋ
Ｃｏｎｎｅｃｔｉｏｎ ｗｉｒｅ
ｆａｕｌｔ，ｔｉｇｈｔｅｎ ａｎｄ
ｃｈｅｃｋ
Ｙｅｓ Ｃｏｎｎｅｃｔｉｏｎ ｗｉｒｅ
ｐｒｏｂｌｅｍ Ｒｅｐａｉｒ ｗｉｒｉｎｇ ａｓ ｒｅｑｕｉｒｅｄ
Ｒｅｐｌａｃｅ ｔｈｅ
ｆａｕｌｔｙ ｕｎｉｔ
Ｙｅｓ
ｆａｕｌｔｙ ｅｌｅｃｔｒｉｃａｌ
ｃｏｎｎｅｃｔｉｏｎ
ｒｅｐｌａｃｅ ｔｈｅ
ｆａｕｌｔｙ
ｃｏｍｐｏｎｅｎｔｓ
Ｙｅｓ
Ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｆａｕｌｔｙ ｒｅｐｌａｃｅ ｉｔ
Ｙｅｓ
Ｒｅｐｌａｃｅ ＩＰＭ ｂｏａｒｄ
ａｎｄ ｆｕｓｅ
Ｎｏ
Ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ Ｙｅｓ
Ｎｏ
Ｄｉｓｐｌａｙ ｂｏａｒｄ ｆａｕｌｔ，
ｒｅｐｌａｃｅ ｉｔ
Ｙｅｓ
Ｎｏｒｍａｌ ｐｒｏｔｅｃｔｉｏｎ ａｎｄ
ｒｅｐｌａｃｅ ｆｕｓｅ
Ｎｏ
Ｉｓ ｔｈｅ ｖｏｌｔａｇｅ
ｉｎｐｕｔ ｏｆ ｓｔａｒｔｕｐ
ｒｅｓｉｓｔｏｒ ｃｏｒｒｅｃｔ？
Ｉｓ ｔｈｅｒｅ ｐｏｗｅｒ
ｏｕｔｐｕｔ ｏｆ ｉｎｄｏｏｒ
ｕｎｉｔ ｍａｉｎ
ｒｅｌａｙ（ＲＬ１０１）？
Ｉｓ ｔｈｅｒｅ ２４０Ｖ ＡＣ
ｂｅｔｗｅｅｎ １ ａｎｄ ２ ｏｎ ｔｈｅ
ｉｎｄｏｏｒ ｔｅｒｍｉｎａｌ
ｂｌｏｃｋ
Ｉｓ ｔｈｅｒｅ ２４０Ｖ ＡＣ
ｂｅｔｗｅｅｎ １ ａｎｄ ２ ｏｎ
ｔｈｅ ｏｕｔｄｏｏｒ ｔｅｒｍｉｎａｌ
ｂｌｏｃｋ
Ｉｓ ｔｈｅ ｆｕｓｅ ｉｎ
ｃｏｎｔｒｏｌ ｂｏｘ
（２０Ａ） ｂｌｏｗｎ？
Ｔｈｅ ｓｔａｒｔｕｐ
ｒｅｓｉｓｔｏｒ Ｉｓ
ｏｖｅｒｈｏｔ？
Ｄｏｅｓ ｔｈｅ ｐｏｗｅｒ
ｉｎｄｉｃａｔｏｒ （ＬＥＤ）ｏｆ
ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ ｌｉｇｈｔ ｕｐ？
Ａｒｅ ａｌｌ ｔｈｅ ｌｅａｄ
ｗｉｒｅｓ ｃｏｎｎｅｃｔｅｄ
ｂｅｔｗｅｅｎ ｉｎｄｏｏｒ ａｎｄ
ｏｕｔｄｏｏｒ ｕｎｉｔ？
Ｉｓ ｔｈｅ ｓｙｓｔｅｍ
ｉｎ ｇｏｏｄ
ｃｏｎｄｉｔｉｏｎ？
Ｔｈｅ ｃｏｎｔｒｏｌ ｓｙｓｔｅｍ ｏｆ ｏｕｔｄｏｏｒ
ｕｎｉｔ ｈａｓ ｓｈｏｒｔ ｃｉｒｃｕｉｔ
ｔｒｏｕｂｌｅ，ｃｈｅｃｋ ｔｈｅ ｃｏｎｎｅｃｔｉｏｎ
ｗｉｒｅ，ｗａｖｅ ｆｉｌｔｅｒ ｂｏａｒｄ，ｏｕｔｄｏｏｒ
ｃｏｎｔｒｏｌ ｂｏａｒｄ，ＩＰＭ，ｒｅｃｔｉｆｉｅｒ ａｎｄ
ｅｌｅｃｔｒｏｌｙｔｉｃ ｃａｐａｃｉｔｏｒ
Ｉｓ ｏｕｔｄｏｏｒ
ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｓｈｏｒｔ ｃｉｒｃｕｉｔｅｄ？
Ｉｓ ＩＰＭ ｂｏａｒｄ ｓｈｏｒｔ
ｃｉｒｃｕｉｔｅｄ？
Ｃｈｅｃｋ ｉｎｄｏｏｒ ａｎｄ ｏｕｔｄｏｏｒ
ｉｎｔｅｒｃｏｎｎｅｃｔｉｎｇ ｗｉｒｉｎｇ ｆｏｒ
ｓｈｏｒｔ ｃｉｒｃｕｉｔ
Ｉｓ ｔｈｅ ｓｙｓｔｅｍ
ｉｎ ｇｏｏｄ
ｃｏｎｄｉｔｉｏｎ？
Ｉｓ ｔｈｅ
Ｆｕｓｅ３（３．１５Ａ）
ｆｕｓｅ ｏｆ ｂｌｏｗｎ？
Ｉｓ ｔｈｅ
Ｆｕｓｅ１（２０Ａ） ｆｕｓｅ
ｏｆ ｂｌｏｗｎ？
Ｎｏ
Ｎｏ
Ｙｅｓ
Ｎｏ
7.SERVICE FLOW CHART
Ｙｅｓ Ｒｅｃｔｉｆｉｅｒ ｆａｕｌｔｙ
ｒｅｐｌａｃｅ ｉｔ
Ｙｅｓ Ｒｅｐｌａｃｅ ｔｈｅ
ｆａｕｌｔｙ ｂｏａｒｄ
Ｄｏｅｓ ｔｈｅ
ｒｅｃｔｉｆｉｅｒ ｈａｖｅ
ａｌｔｅｒｎａｔｉｎｇ
ｃｕｒｒｅｎｔ ｉｎｐｕｔ？
Ｉｓ ｔｈｅ ｒｅａｃｔｏｒ
ａｎｄ ｗａｖｅ ｆｉｌｔｅｒ
ｂｏａｒｄ ｏｐｅｎ
ｃｉｒｃｕｉｔ？
Ｎｏ
Ｉｓ ｔｈｅ
ｒｅｓｉｓｔｏｒ
ＴＨ１０１
ｃｏｒｒｅｃｔ？
Ｒｅｐｌａｃｅ ｔｈｅ
ｒｅｓｉｓｔｏｒ
ＮＯ
ＮＯ

Ｅｒｒｏｒ ｃｏｄｅ ｏｕｔｄｏｏｒ ３
ｃｏｍｐｒｅｓｓｏｒ ｏｖｅｒ ｈｅａｔ
ｐｒｏｔｅｃｔｉｏｎ
Ｎｏ
Ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｆａｕｌｔｙ ， ｒｅｐｌａｃｅ ｉｔ
Ｒｅｐｌａｃｅ ｉｔ
Ｎｏ
Ｙｅｓ
Ｎｏｒｍａｌ
ｐｒｏｔｅｃｔｉｏｎ
Ｙｅｓ
Ｙｅｓ
Ｒｅｐｌａｃｅ
ｄｉｓｃｈａｒｇｅ
ｓｅｎｓｏｒ
Ｎｏ
Ｅｒｒｏｒ ｃｏｄｅ ｏｕｔｄｏｏｒ ６
ｏｖｅｒ ｃｕｒｒｅｎｔ ｐｒｏｔｅｃｔｉｏｎ
Ｎｏ
Ｏｕｔｄｏｏｒ
ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｆａｕｌｔ
Ｙｅｓ
Ｎｏｒｍａｌ
ｐｒｏｔｅｃｔｉｏｎ
Ｙｅｓ Ｙｅｓ
Ｎｏ
Ｙｅｓ
Ｏｃｃｕｒ ｂｙ ｃｈａｎｃｅ
Ｅｒｒｏｒ ｃｏｄｅ ２７
ｎｏｎｅ ｌｏａｄ ｐｒｏｔｅｃｔｉｏｎ
Ｎｏ
ｒｅｐｌａｃｅ ｏｕｔｄｏｏｒ
ｃｏｎｔｒｏｌ ｂｏａｒｄ
ＩＰＭ ｆａｕｌｔ，
ｒｅｐｌａｃｅ ｉｔ
Ｎｏ
Ｙｅｓ
Ｙｅｓ
Ｎｏ
Ｙｅｓ Ｃｏｍｐｒｅｓｓｏｒ
ｆａｕｌｔｙ Ｏｕｔｄｏｏｒ ｗａｖｅ ｆｉｌｔｅｒ ｂｏａｒｄ
ｔｒｏｕｂｌｅ ａｎｄ ｒｅｐｌａｃｅ ｉｔ
Ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｎｏ
Ｙｅｓ
Ｅｒｒｏｒ ｃｏｄｅ ｏｕｔｄｏｏｒ ８
ｖｏｌｔａｇｅ ｏｆ ｐｏｗｅｒ
ｓｕｐｐｌｙ Ｉｓ ａｂｎｏｒｍａｌ
Ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ ｆａｕｌｔ，
ｒｅｐｌａｃｅ ｉｔ
Ｎｏ
Ｎｏｒｍａｌ ｐｒｏｔｅｃｔｉｏｎ
Ｅｒｒｏｒ ｃｏｄｅ ｏｕｔｄｏｏｒ
１５
ｆａｎ ｍｏｔｏｒ ｅｒｒｏｒ
Ｓｗｉｔｃｈ ｏｆｆ ｔｈｅ ｐｏｗｅｒ
ｓｕｐｐｌｙ ａｎｄ ｓｔａｒｔ ｕｐ ｉｎ
３ ｍｉｎｕｔｅｓ
Ｉｓ ｔｈｅ ｏｖｅｒ ｈｏｔ
ｓｗｉｔｃｈ ｏｆ
ｃｏｍｐｒｅｓｓｏｒ ｏｐｅｎ
ｃｉｒｃｕｉｔ？
Ｉ ｓ ｔｈｅ ｒｅｓｉｓｔａｎｃｅ
ｏｆ ｃｏｍｐｒｅｓｓｏｒ
ｄｉｓｃｈａｒｇｅ ｓｅｎｓｏｒ
ｃｏｒｒｅｃｔ？
Ｓｗｉｃｈ ｏｆｆ ａｎｄ
ｓｔａｒｔ ｕｐ
ａｇａｉｎ，Ｉｓ ｉｔ ｏｋ？
Ｉｓ ｔｈｅ
ｏｐｅｒａｔｉｎｇ
ｃｕｒｒｅｎｔ ｂｅｙｏｎｄ
Ｎｏｒｍａｌ ｒａｎｇｅ？
Ｉｓ ｔｈｅ ｓｕｒｆａｃｅ
ｏｆ ｃｏｍｐｒｅｓｓｏｒ
ｖｅｒｙ ｈｏｔ？
Ｓｗｉｔｃｈ ｏｆｆ ａｎｄ
ｓｔａｒｔ ｕｐ
ａｇａｉｎ，Ｉｓ ｉｔ
ｏｋ？
Ｒｅｐｌａｃｅ ｔｈｅ
ｏｕｔｄｏｏｒ ＩＰＭ
ｃｏｎｔｒｏｌ ｂｏａｒｄ，Ｉｓ
ｉｔ ｏｋ？
Ｒｅｐｌａｃｅ ｔｈｅ
ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ
ｂｏａｒｄ，Ｉｓ ｉｔ ｏｋ？
Ｉｓ ｔｈｅ ｖｏｌｔａｇｅ ｏｆ ｐｏｗｅｒ
ｓｕｐｐｌｙ Ｎｏｒｍａｌ ｏｆ ＡＣ
１７６－２６４Ｖ？
Ｉｓ ｔｈｅｒｅ ＤＣ ３１０
ｖｏｌｔａｇｅ ｉｎｐｕｔ
ｂｅｔｗｅｅｎ Ｐ－Ｎ ｏｎ
ＩＰＭ ｂｏａｒｄ
Ｉｓ ｔｈｅｒｅ ｖｏｌｔａｇｅ
ｏｕｔｐｕｔ ｂｅｔｗｅｅｎ ＩＰＭ
ｂｏａｒｄ ａｎｄ Ｕ－Ｖ－Ｗ？
Ｉｓ ｔｈｅ ｃｏｍｐｒｅｓｓｏｒ
ｒｕｎｎｉｎｇ？
Ｒｅｐｌａｃｅ ｃｏｍｐｒｅｓｓｏｒ
Ｃｈｅｃｋ ｏｐｅｒａｔｉｏｎ
Ｙｅｓ
7.SERVICE FLOW CHART
Ｎｏ
Ｏｃｃｏｒ ｂｙ ｃｈａｎｃｅＹｅｓ
Ｄｏｅｓ ｆａｎ
ｍｏｔｏｒ
ｒｕｎ ｎｏｒｍａｌ？
ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ
ｆａｕｌｔｙ ａｎｄ ｒｅｐｌａｃｅ ｉｔ
Ｙｅｓ
Ｎｏ
Ｒｅｐａｉｒ ｔｈｅ ｏｕｔｄｏｏｒ
ｆａｎ ｍｏｔｏｒ
Ｄｏｅｓ ｖｏｌｔａｇｅ ｒｅｐｅａｔ
０Ｖ ＤＣ ａｎｄ １５Ｖ ＤＣ？
Ｉｎｓｅｒｔ ｓｃｒｅｗｄｒｉｖｅｒ ｉｎｔｏ ｔｏ
ｒｏｔａｔｅ ｉｎｄｏｏｒ ｆａｎ ｍｏｔｏｒ
ｓｌｏｗｌｙ ｆｏｒ １ ｒｅｖｏｌｕｔｉｏｎ ｏｒ
ｏｖｅｒ，ａｎｄ ｍｅａｓｕｒｅ ｖｏｌｔａｇｅ
ＮＯ．６（＋） ａｎｄ ＮＯ．３（－） ｏｎ ＣＮ９．
Ｄｏｅｓ ｔｈｅ ｓｏｃｋｅｔ ＣＮ９ ｏｆ
ｏｕｔｄｏｏｒ ｃｏｎｔｒｏｌ ｂｏａｒｄ ｈａｖｅ
ｐｏｗｅｒ ｉｎｐｕｔ（ＤＣ ３１０Ｖ ＡＮＤ ＤＣ
１５Ｖ）
Ｙｅｓ
Ｎｏ
Ｒｅｐｌａｃｅ
ｏｕｔｄｏｏｒ
ＥＥＰＲＯＭ
ＥＥＰＲＯＭ ｅｒｒｏｒ
ＹＥＳ
ＮＯ