Hitachi EV-1.5N1, Service Manual

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8. Troubleshooting
265
SMGB0079 rev.0 - 01/2013
8
  
Checking procedure of PCB by means of the Remote Control Switch
(1) Press and hold “ ” (menu) and “?” (help) simultaneously
for 3 seconds during the normal mode.
The check menu is displayed.
Check Menu
Self Checking
02
/
02
I. U./O. U. PCB Check
ENT. RTN. SEL. OK
(2) Select “I.U./O.U. PCB Check” from the check menu and
press “OK”.
(3) Select the set indoor unit by pressing “ ” and press
“OK”. (This screen is NOT displayed when the number of indo-
or units connected with the remote control switch is 1 (one). In
this case, (4) will be displayed.)
I.U./O.U. PCB Check
01-01 02-01 03-01 04-01
04-02
04-03
04-04
03-02
03-03
03-04 01-02 02-02
02-03
02-04
01-03
01-04
RTN. SEL. OK
ENT.
(4) The indoor unit PCB and the outdoor unit PCB checks are
started.
* If “ “ (menu) is pressed during the check, the check is cance-
led and the screen will return to (2).
* If “ “ (return) is pressed during the check, the check is can-
celed and the screen will return to (3).
Check 1: Checking
Check 2: Checking
Check 3: Checking
I.U./O.U. PCB: Check 01-01
(5) After completing the check, the result of PCB check will be
indicated. Press “ ” (return) and return to (3).
Check 1: 00
Check 2: 00
Check 3: 00
I.U./O.U. PCB: Check 01-01
Result of check table
Indoor Unit PCB Outdoor Unit PCB
00
Normal
00
Normal
01
Abnormality of Inlet Air Temp. Thermistor
07
Abnormality of Transmission of Outdoor Unit
02
Abnormality of Outlet Air Temp. Thermistor
F4
ITO Input Failure
03
Abnormality of Liquid Pipe Temp. Thermistor
F5
PSH Input Failure
04
Abnormality of Remote Thermistor
F6
Abnormality of Protection Signal Detection Circuit
05
Abnormality of Gas Pipe Temp. Thermistor
F7
Abnormality of Phase Detection
01
Abnormality of Transmission of Central Station
F8
Abnormality of Transmission of Inverter
08
Abnormality of EEPROM
FA
Abnormality of High Pressure Sensor
0A
Zero Cross Input Failure
Fb
Abnormality of Comp. Discharge Gas Temp. Thermistor
b
Abnormality of Transmission of I.U. during Check
FC
Abnormality of Low Pressure Sensor
Fd
Abnormality of Evaporating Temp. Thermistor at Heating
FF
Abnormality of Ambient Air Temp. Thermistor