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Controller
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Indoor LED Malfunction Code
Display Contents
Explanation of Malfunction
All lamps are off
Standing-by
Operation lamp is on
ON
PRE./DEF. lamp is on
Anti-cooling or Defrosting
Timer lamp is on
Timer function is on
Timer lamp flashes
Indoor/outdoor communication
Operation lamp flashes
Indoors temp. Sensor abnormal
Alarm lamp flashes quickly
Water-level switch abnormal
DEF. Lamp flashes
Mode-confliction malfunction
Alarm lamp flashes slowly
Outdoor malfunction
7. CN10
―
Display board socket
The display board in digital scroll system is just to display running conditions and
malfunction information. The manual button is just to check the address code and power code
of indoor units
8. CN14
―
SWING
9. CN8
―
Indoor EXV
12V weak-electricity control. After the compressor starts, the EXV of the matching indoor
units under ON mode will be open at certain opening-degree and the EXV of the matching
indoor units under OFF, standing-by, Fan mode or Mode confliction will be close.
When forced-cooling, all indoor EXV will be forced open.
The action of EXV can be seen from a 5-core or 6-core step-motor that is connected here
to replace EXV.
10. CN12
―
Auxiliary electric-heater, 12V DC.
11. CN1
―
Transformer input socket (TRANS IN), 220V strong-electricity.
The power supply of 220V passes the fuse, anti-jamming inductance and PTC protector and
then connects to the terminal in the PCB.
12. N
―
Zero-wire output socket.
Supply to indoor fan motor that needs separate zero-wire.
13. CN13
―
SWING
Output 220 V. Use 220V synchronization swing-motor. The action is as same as CN14 step-
motor.
Summary of Contents for R-410A
Page 103: ...Wall mount 102 Part 4 2 Wall Mounted...
Page 113: ...Wall mount 112 4 Dimensions 4 1 YDS 22 36EC 4 2 YDS 45 56EC...
Page 115: ...Wall mount 114 5 Piping Diagrams 5 1 YDS 22 56EC 5 2 YDS 22 56HC...
Page 116: ...Wall mount 115 6 Wiring diagrams 6 1 YDS 22 36EC 6 2 YDS 45 56EC...
Page 117: ...Wall mount 116 6 3 YDS 22 56HC...
Page 118: ...Wall mount 117 7 Sound level 7 1 Test condition 7 2 Noise spectrums YDS 22 36EC HC...
Page 119: ...Wall mount 118 YDS 45 56EC HC...
Page 120: ...Wall mount 119 8 Velocity temperature distribution Discharge angle 70...