Hitachi RAM-70NP4A RAM70NP4A Manuel D’Utilisation
Codes de produits
RAM70NP4A
14-36
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)
14.8.7 MONO SPLIT (RAC-50/60/70WPA, RAC-50/60/70DPA)
SELF-DIAGNOSIS LIGHTING MODE
: LIGHT
: BLINK
: OFF
L
D
3
0
1
0
1
L
D
3
0
2
0
2
L
D
3
0
3
0
3
L
D
3
0
4
0
4
SELF DIAGNOSIS NAME
DETAIL
MAIN CHECK POINT
RED RED RED GRN
1. DURING OPERATION
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)
Example of blinking (5 times)
2. DURING STOP
Normal Stop
Indoor Thermostat OFF.
Main Operation OFF
Not Malfunction
Reset STOP
When stop with Power RESET
(Normal when power has been
Switched ON)
①P.W.B. (Power Circuit, HIC, ETC)
1 Time
Peak Current Cut
Over Current is Detected
①Compressor ②P.W.B.
①System Power Module ②P.W.B.
2 Times
Abnormal Low Speed
Rotation
Position Detection Signal is not
input during operation
①System Power Module ②Compressor ③
P.W.B
3 Times
Switching Failure
Fail to Switch from Initial Low
Frequency Sync to Position
Detection Signal
①System Power Module ②Compressor ③
P.W.B
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
2SEC
Lights for 0.25 sec at
interval of 0.25 sec
interval of 0.25 sec
TIME
SET VALUE
(1)
(2)
(3)
RO
T
AT
IO
N
SPEED
2sec
Lights for 0.25 sec at
interval of 0.25 sec
interval of 0.25 sec