Dx-Interface Alarm Codes - Hitachi EXV-2.0E2 Manuel D'installation Et De Fonctionnement

DX-INTERFACE ALARM CODES

1 Press and hold " " (menu) and " " (return) simultaneously for
at least 3 seconds during the normal mode (when unit is not
operated). The test run menu will be displayed.
2 Select "Thermistor Selection" from the test run menu and press
"OK".
3 Change the temperature thermistor item by pressing "
press "OK".
• IU Thermistor: Control by inlet air thermistor (Factory setting)
• THM of RSCW: Control by thermistor of remote control switch
• Average of THM: Control by average value of indoor suction
thermistor and thermistor of remote control switch
4 Select "Yes" and press "OK". The test run menu will be displayed
after the setting is confirmed. If "No" is pressed, the screen will
return to (3).
5 Press " " (return) on the test run menu to return to the normal mode.
13 DX-INTERFACE ALARM CODES
Alarm
Detail of Abnormality
Code
01 Activation of protection device
03 Transmission error with the outdoor unit.
11 Air outlet thermistor
12 Air inlet thermistor
13 Liquid pipe thermistor
14 Gas pipe thermistor
19 Indoor fan protection device activation for Fan
31 Incorrect setting of outdoor and indoor units
35 Indoor Unit Number Setting Error
Abnormal transmission between PCB1 and
70
PCB2
71 Incorrect PCBs setting
73 Incorrect 4-20Ma, 0-10v, 0-5v, 0-10k Ω setting
Compressor protection alarm (cannot be reset
EE
from the remote controller)
?
N O T E
Alarms with origin in Outdoor unit, compressor and system are explained in outdoor unit technical documentation.
24 PMML0293A rev.2 - 08/2016
" and
Float switch activation (high water level in drain hose or abnormality in drain pipe, float
switch or drain pan).
Outdoor fuse meltdown, Indoor/outdoor connection wiring (breaking, wiring error, etc.)
If IU as group controller: Loose, disconnected, broken or short-circuited connector
If IU as normal unit: no thermistor and no Group message received.
If IU as group controller: Loose, disconnected, broken or short-circuited connector
If IU as normal unit: no thermistor and no Group message received.
Loose, disconnected, broken or short-circuited connector
Loose, disconnected, broken or short-circuited connector
Fan motor overheating, locking.
Outdoor/Indoor Unit capacity setting error, Indoor total capacity excessively large/small
Indoor units with the same number exist in a refrigerant piping system
Loose, disconnected
Wrong setting are performed in PCBs
Loose, disconnected, broken or short-circuited connector
This alarm code is displayed when the following alarms are triggered three times within
six hours: 02,07,08,39,43 to 45, 47
Main Factors