20
PMML0140A rev.1 - 07/2009
INSTALLATION OF
REMOTE CONTROLLER
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.
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
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