Hitachi Utopia PAS-3HVRG, Service Manual

Page: 56 / 127

1-53
TROUBLESHOOTING
1.2.3 Troubleshooting in Check Mode by Remote Control Switch
Check Mode Released
Forward: Press the switch to rise
from 00 to 01 to 02 …
Backward: Press the switch to descend
from 15 to 14 to 13 …
In Check Mode 2, Data of the first
three units connected serially to a
remote control switch are available.
You can press the CHECK switch to
release Check Mode 2.
Check Mode 1 cannot be released
even if you press the CHECK switch.
Alarm code identifying the last fault that has occurred in
the indicated unit.
Unit number of connected unit or unit number for which
checking mode was selected previously.
Unit Number and
Alarm Code Displayed
After
7 seconds
Perform within
7 seconds to
check another unit.
(A)
Press for more
than 3 seconds.
To View the Previous Indication
ADDS: Number of Indoor Unit in No. ** Cycle
RN: No. ** Refrigerant Cycle
TEMP
Press
CHECK
Press for more
than 3 seconds.
CHECK
Press
CHECK
Unit Number and
Alarm Code Displayed
Check Mode 1
(See 1.2.3 (1) for details.)
Press to view the next data.
Press to view the previous data.
Check Mode 2
(See 1.2.3 (2) for details.)
COOL
HIGH
A/C
ADDS. RN
CHECK
COOL
HIGH
A/C
CHECK
COOL
HIGH
A/C
CHECK
COOL
HIGH
A/C
CHECK
COOL
HIGH
+
VENTI
A/C
CHECK
COOL
HIGH
A/C
ADDS. RN
CHECK CHECK
After
7 seconds
See (A)
To View the Next Indication
TEMP
Press
TEMP
Press
Check Mode 1: Current data will be displayed.
Check Mode 2: Data held immediately before
failure, will be displayed.
Check
Mode
(PC-P1H)
Use the remote control CHECK switch in the following cases.
(1) When the RUN lamp is flickering.
(2) To trace back the cause of trouble after restarting from
stoppage with the RUN lamp flickering.
(3) To check during normal operation or stoppage.
(4) To monitor the temperatures of intake and discharge air.
Normal Mode
NOTES:
Indication will delay as transmission between the remote
control switch and indoor unit takes about 10 seconds.
All data may be displayed as "FF" or "-1" or "255".
These transient data produced temporarily by software do
not affect device functions at all. (The alarm code may also
be indicated as "FF".)
If it is not indicated check mode 1, it has possibilities that
the transmission between remote control switch and
indoor unit is not collect.
*1
TEMP.
RUN / STOP
MODE FAN SPEED
VENTI
RESET
CHECK LOUVER
ON/OFF TIMER
TIME
NO FUNCTION
FAN
COOL
HEAT
DRY
AUTO
HIGH
MED
LOW
A/C
VENT
+
SWING
DEFROST
CENTRAL
H.STRG
SERVICE
ON/OFF TIMER SET TEMP.
RN HR
FILTER
T. RUN
ABNML
CHECK
ADDS
UNIT
LOUVER