Hitachi P-N23NA2 Service Manual

10 Troubleshooting
DX-Interface EXV-(2.0-10.0)E2 or KPI-(E/X)4E alarm codes
SMGB0099 rev.0 - 12/2016
349
10
10.5 DX-Interface EXV-(2.0-10.0)E2 or KPI-(E/X)4E alarm codes
Code
number
DX-
KIT2
KPI-E3
KPI-
Active
Category Type of abnormality Main cause
01
o - o Indoor Activation of protection device
Float switch activation
(high water level in drain hose or abnormality in
drain pipe, oat switch or drain pan).
03
o - o Transmission Transmission error
Outdoor fuse meltdown, Indoor/outdoor
connection wiring (breaking, wiring error, etc.)
11
o o o Indoor Air inlet thermistor (RA for KPI)
Loose, disconnected, broken or short-circuited
connector
12
o o o Indoor Air outlet thermistor (OA for KPI)
Loose, disconnected, broken or short-circuited
connector
13
o - o Indoor Liquid pipe thermistor
Loose, disconnected, broken or short-circuited
connector
14
o - o Indoor Gas pipe thermistor
Loose, disconnected, broken or short-circuited
connector
15
- - - Indoor
Fresh outdoor air thermistor
(Econofresh)
Loose, disconnected, broken or short-circuited
connector
16
- - o Indoor
Air inlet DX Coil thermistor
(Tincoil)
Loose, disconnected, broken or short-circuited
connector
17
- - o Indoor
Air outlet DX Coil thermistor
(Toutcoil)
Loose, disconnected, broken or short-circuited
connector
18
(o) o o Indoor
Indoor RA fan protection device
activation for KP
Fan motor overheating, locking.
19
o o o Indoor
Indoor OA fan protection device
activation for KPI or DX-KIT2
Fan
Fan motor overheating, locking.
31
o - o System
Incorrect setting of outdoor and
indoor units
Outdoor/Indoor Unit capacity setting error,
Indoor total capacity excessively large/small
35
o - o System Indoor unit number setting error
Indoor units with the same number exist in a
refrigerant piping system
70
o o o Indoor
Abnormal transmission between
PCB1 and PCB2
Loose, disconnected
71
o o o Indoor Incorrect PCBs setting Wrong setting are performed in PCBs
73
o o o Indoor
Incorrect 4-20mA. 0-10V, 0-5V,
0-10kΩ setting
Loose, disconnected, broken or short-circuited
connector
EE
o - o Compressor
Compressor protection alarm
(cannot be reset from the remote
controller)
This alarm code is displayed when the
following alarms are triggered three times
within six hours: 02,07,08,39,43 to 45, 47
74
- - - Indoor
Remote sensor thermistor
(Trem)
Loose, disconnected, broken or short-circuited
connector
These alarm codes are displayed in the 7 segments on PCB2 corresponding to the DX-Interface EXV-(2.0-10.0)E2 or
KPI-(E/X)4E.

Hitachi P-N23NA2 Specifications

General

Brand	Hitachi
Model	P-N23NA2
Category	Air Conditioner
Language	English