Hitachi RAF-25QXA RAF25QXA 사용자 설명서
제품 코드
RAF25QXA
14-31
14.8 TROUBLESHOOTING WHEN OUTDOOR LED LAMP BLINKS
14.8.1 MONOZONE RAC-25NPA / 35NPA / 50NPA
SELF-DIAGNOSIS LIGHTING MODE
: LIGHT
: BLINK
: OFF
LD301
LD302
SELF DIAGNOSIS NAME
DETAIL
MAIN CHECK POINT
1. DURING OPERATION
LD303 (RED) LIGHTS.
Normal operation
Compressor operation
Not malfunction
Overload (1)
The rotation speed is automatically controlled to
protect the compressor in the overload
condition.
This shows an overload but not malfunction.
protect the compressor in the overload
condition.
This shows an overload but not malfunction.
Overload (2)
Overload (3)
2. DURING STOP
LD303 (RED) GOES OFF.
Normal stop
Stopped by Thermostat or Controller
NOT MALFUNCTION
Reset stop
Microprocessor was re-booted. (It is
NORMAL when power SW has been
turned ON)
NORMAL when power SW has been
turned ON)
①Main P.W.B.
1 time
Peak current cut
Compressor Peak Current was
beyond the maximum limit
beyond the maximum limit
①Main P.W.B.
②Compressor
②Compressor
2 times
Abnormal low speed rotation
Compressor Rotor position could not
be detected.
①Main P.W.B.
②Compressor
②Compressor
3 times
Switching failure
Switching from low frequency sync
start to position detection operation
failure
failure
①Main P.W.B.
②Compressor
②Compressor
4 times
Overload lower limit cut
Overload protection mechanism is
requesting compressor to run at a
speed lower than the minimum
speed limit
speed lower than the minimum
speed limit
①Outdoor unit is exposed to direct sunlight or
its airflow is blocked.
②Fan motor ③Main PWB
④The Voltage is extremely LOW
④The Voltage is extremely LOW
5 times
OH thermistor temperature rise
OH thermistor detected compressor
overheat
①Leak of refrigerant.
②Compressor
③OH thermistor circuit.
②Compressor
③OH thermistor circuit.
6 times
Thermistor abnormal
Abnormal thermistor value was
detected (Open or Short)
detected (Open or Short)
①Thermistor.
②Connection of thermistor defective.
③Thermistor circuit.
②Connection of thermistor defective.
③Thermistor circuit.
7 times
Acceleration failure
Compressor acceleration was not
more that the minimum speed
setting.
setting.
①Leak of refrigerant.
②Compressor.
②Compressor.
8 times
Communication error
Communication between indoor and
outdoor is interrupted
①C-D cable wrongly connected
②Open connection on the C-D cable.
③Interface circuit of indoor/outdoor unit.
②Open connection on the C-D cable.
③Interface circuit of indoor/outdoor unit.
9 times
Abnormal power voltage
Abnormal power source is detected.
①Abnormal power source
②Cable is wrongly connected
③Main P.W.B.
②Cable is wrongly connected
③Main P.W.B.
10 times
Fan lock error
Outdoor fan actual rpm could not
reach as per instructed.
①Outdoor fan motor
②Fan motor circuit.
②Fan motor circuit.
12 times
EEPROM read error
Microcomputer cannot read the data
in EEPROM.
①Main P.W.B.
13 times
ACTIVE CONVERTER
defective
defective
Over Voltage is detected by System
Power Module
①System Power Module.
14 times
Example of blinking (5 times)
2SEC
Lights for 0.25 sec at
interval of 0.25 sec
interval of 0.25 sec
TIME
SET
VALUE
VALUE
RO
T
AT
IO
N
SPEED
(1)
(2)
(3)