Hitachi RAM-68NP3B, Service Manual, Page: 65 / 79

List of error code when using Self-Diagnosis Memory Function
Please refer to the display screen of wireless or wired remote control.
(This error code only for error happen at outdoor side)
INDOOR
OPERATION
LAMP
BLINKING
WIRELESS
REMOTE
CONTROL
DISPLAY
WIRED
REMOTE
CONTROL
DISPLAY
SELF-DIAGNOSE
CONTENT
ERROR DESCRIPTION DETAIL MAIN CHECK POINT
2 times
002
01
Peak current cut. Over current is detected.
1. Compressor
2. Inverter P.W.B.
3 times
003
01
Compressor abnormal
low speed rotation.
Position detection signal has no input
during operation.
1. Compressor
2. Inverter P.W.B.
4 times
004
01
Compressor switching
failure.
Fail to switch from initial low
frequency sync to position detection
sync.
1. Compressor
2. Inverter P.W.B.
5 times
005
01
Overload lower limit
cut.
Overlaod condition still presisting
even rotation speed is below the lower
rpm limit.
1. Outdoor unit is expose to direct
sunlight or its air flow blocked.
2. Fan motor
3. Fan motor circuit
4. The voltage is extremely low
6 times
006
01
OH thermistor
temperature rise.
OH thermistor is operating.
1. Leak of refrigerant
2. Compressor
3. OH thermistor circuit
4. Fan motor
5. Fan motor circuit
8 times
008
01
Communication error
between
microcomputer.
Communication between inverter
microcomputer and main
microcomputer failed.
1. Connector insertion at CN21 &
CN22
2. Main and Inverter P.W.B.
9 times
009
01
Indoor type mismatch. Single model connected.
1. Main P.W.B.
2. Indoor unit
10 times
010
01
Abnormal power
source.
Power supply voltage is incorrect.
1. Power supply voltage
2. Main or Inverter P.W.B. or both
P.W.B.
12 times
012
00
Fan motor faulty.
Outdoor fan rpm is not rotate as
intended rpm.
1. Fan motor
2. Fan motor circuit
13 times
013
01
EEPROM reading
error.
Microcomputer cannot read the data
in EEPROM.
1. Inverter P.W.B.
If still NG after change Inverter
P.W.B, change Main P.W.B.
14 times
014
01
Active converter
defect.
Over voltage is detected or
compressor load is abnormal.
1. Inverter P.W.B.
2. Compressor
7 times
071
01
Oveheat Thermistor
7 times
072
01
Defrost Thermistor
7 times
073
01
Outdoor Temperature
Thermistor
7 times
074
01
Narror pipe thermistor
abnormal
(Indoor no.1)
7 times
075
01
Wide pipe thermistor
abnormal
(Indoor no.1)
Thermistor's connector not connected
or thermistor's wire worn out or
shorted.
1. Thermistor
2. Connection of thermistor faulty
3. Thermistor circuit
02
03
04
05
06
08
09
10
12
13
14