Hitachi RPC-4.0FSN2E - Page 20

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INSTALLATION AND OPERATION MANUAL
5.1.7. INDICATIONS UNDER NORMAL CONDITIONS
 Thermo-controller
When the thermo-controller is operated, the fan speed changes to LOW, and the indication remains
unchanged. (Only in heating mode)
 Defrosting
When the system is operating in the defrost mode, the DEFROST indication is shown.
The indoor fan slows down or stops (depending on the setting selected).
The louver is xed horizontally at 35°. However, the LCD indication is still activated.
(The gure shows the DEFROST setting).
When the unit stops during the defrosting operation, the RUN indicator (red) goes out.
However, the operation continues to show the DEFROST indication, and the unit starts up once the
defrost operation is nished.
 Filter
Clogged lter: The “FILTER” indication appears when the lter is clogged with dust, etc.
Clean the lter: Press the RESET switch after cleaning the lter. The “FILTER” indication goes out.
5.1.8. INDICATIONS UNDER ABNORMAL CONDITIONS
 Disfunction
The RUN indicator (red) blinks.
The ALARM indicator appears on the liquid crystal display.
The indoor unit number, the alarm code and the model code are indicated on the liquid crystal display.
If several indoor units are connected, the above items are indicated one by one for each of them.
Make a note of the indications and contact your HITACHI service provider.
 Power failure
All the indications disappear.
If the unit stops because of a power failure, it will not restart even when the power returns. Perform the
start-up operations again.
If the power failure lasts less than 2 seconds, the unit will automatically start up again.
 Electrical noise
The indications may all be OFF and the unit stopped. This is because the microcomputer has been
activated in order to protect the unit from electrical noise.
NOTE:
If the wireless remote control switch is used for the wall-mounted indoor unit, remove the connectors
(CN25) connected to the indoor PCB. If they are not removed, the unit will not operate.
The memorized data can not be erased unless the remote control switch is initialized.
Model code
Indication Model
H
Heat pump
P
Inverter
F
Multi (Set-Free)
C
Only cooling
E
Others

Twin, triple & Quad
Indoor unit number
Alarm code
Model code:
No. of indoor
units connected
Alarm code
Alternating
indication
every second
PMML0197_r0_04-10.indb 20 08/07/2010 9:20:24