Troubleshooting In The Check Mode By Using The Remote Control Switch - Hitachi FSXN Series Service Manual

8 Troubleshooting

8.4 Troubleshooting in the check mode by using the remote control switch

Use the remote control CHECK switch in the following cases.
(1) When the RUN lamp is flashing.
(2) To trace back the cause of trouble after restarting from
stoppage with the RUN lamp flashing.
(3) To check during normal operation or stoppage.
(4) To monitor the temperatures of intake and discharge air.
Check Check Mode 1: Current data will be displayed.
Mode
Check Mode 2: Data held immediately before
Normal Mode
CHECK
Unit Number and COOL
Alarm Code Displayed
(A)
After
7 seconds
COOL
Check Mode 1
COOL
CHECK
Unit Number and
Alarm Code Displayed
See (A)
COOL
After
7 seconds
Check Mode 2
COOL
COOL
Check Mode Released
CHECK
238
SMGB0065 rev. 1 - 12/2010
PC-ART
failure, will be displayed.
NOTES:
Indication will delay as transmission between the remote
Press for more
control switch and indoor unit takes about 10 seconds.
than 3 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 correct.
Alarm code identifying the last fault that has occurred in
HIGH
the indicated unit.
ADDS. RN
Unit number of connected unit or unit number for which
A/C
checking mode was selected previously.
CHECK
Perform within
7 seconds to
check another unit.
HIGH
A/C
CHECK
HIGH
A/C
CHECK
Press for more
than 3 seconds.
HIGH
ADDS. RN
A/C
CHECK CHECK
HIGH
A/C
TEMP
CHECK
HIGH
A/C
+
CHECK
VENTI
Press
RUN/STOP
MODE FAN SPEED
VENT LOUVER
Forward: Press the
from 00 to 01 to 02 ...
Backward: Press the
from 15 to 14 to 13 ...
To View the Previous Indication
TEMP
Press
To View the Next Indication
TEMP
Press
Press to view the next data.
Press to view the previous data.
ADDS: Number of Indoor Unit in No. ** Cycle
RN: No. ** Refrigerant Cycle
Press 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.
TEMP
RESET
ON/OFF TIMER
CHECK
TIME
switch to rise
switch to descend