Test Procedure Using The Remote Control - Hitachi RCI Service Manual

7 Test run

7.2 Test procedure using the remote control

Switch on the power supply to the indoor and outdoor units.
Select the TEST RUN mode using the remote control: press
MODE and OK buttons at the same time for more than 3 seconds.
1 If the indication TEST RUN or the counter number of the units connected to the control (e.g. 05) is displayed on the
remote control, the remote control cable connection is correct and you may go on to point 4.
2 If no indication is displayed or 00 is displayed or if the number of units indicated is below the actual number, this indicates
a fault. In this case, go to point 3.
Remote control indication
No display.
The number on the connected unit
counter is incorrect.
3 Go back to point 1 after the check.
4 Select the TEST RUN mode by pressing MODE (COOL or HEAT).
5 Press RUN/STOP.
a The test run will begin. (The TEST RUN will take two hours. It can also be stopped by pressing RUN/STOP again).
b If the unit does not start or the on/off LED on the remote control flickers, this indicates a fault. Go to step 6.
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SMGB0063 rev. 1 - 10/2010
Fault
• The power supply is not on
• The remote control cable connection
is incorrect.
• The power line connection wires are
incorrect or loose.
• The unit number setting is incorrect.
• The control cable connection
between each indoor unit is incorrect
(when a remote control controls
several units).
Inspection points after switching off
the power supply
a The connection between the remote
control and the unit is correct
b Remote control cable connection
points.
c Remote control cable connector
contact.
d Adjustment of the screws on each
terminal board.
a Settings of the DIP switches on the
printed circuit board.
b Connection order of the jumper
connection cable wires.
c Jumper connection cable connection
points.
d Jumper connection cable connector
contact.