Indoor Led Malfunction Code - York R-410A Technical & Service Manual

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Indoor LED Malfunction Code

Display Contents
All lamps are off
Operation lamp is on
PRE./DEF. lamp is on
Timer lamp is on
Timer lamp flashes
Operation lamp flashes
Alarm lamp flashes quickly
DEF. Lamp flashes
Alarm lamp flashes slowly
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.
Explanation of Malfunction
Standing-by
ON
Anti-cooling or Defrosting
Timer function is on
Indoor/outdoor communication
Indoors temp. Sensor abnormal
Water-level switch abnormal
Mode-confliction malfunction
Outdoor malfunction
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Controller