Hitachi EV-1.5N1, Service Manual

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7. Test run
170
SMGB0079 rev.0 - 01/2013
7.2 Test run procedure using the remote control switch (PC-ART)

Turn ON the power source of the units

Counting
number of
connected
units

Operation lamp

Procedure for TEST RUN mode of remote control switch.
Depress the MODE and the OK switches together for more
than 3 seconds.
a.
If TEST RUN and the counting number of the connected
units to the remote control switch (for example
05 ) are
indicated on the remote control switch, the connection of
remote control cable is correct. → Go to

b.
If no indication appears or the number of the units indica-
ted is smaller than the actual number of the units, some
abnormalities exist. → Go to


Remote control
switch indication
Wrong portions Inspection points after the power source OFF
No indication
The power source of outdoor unit is not
turned ON.
The connection of the remote control cable
is incorrect.
1
Connecting points of remote control cable, terminal board of
remote control switch and indoor unit.
2
Contact of terminals of remote control cable.
The connecting wires of power supply line
are incorrect or loosened.
3
Connection order of each terminal board.
4
Screw fastening of each terminal boards.
Counting number
of connected units
is incorrect
The power source of outdoor unit is not
turned ON.
The operating line wiring between indoor
unit and outdoor unit is not connected.
The connection of control cables between
each indoor units are incorrect. (When
one remote control switch controls multiple
units).
5
Dip switch setting on printed circuit board.
6
Connection on the PCB.
7
This is the same as item  1, 2, and 3.
Back to  after checking

Select TEST RUNNING MODE by depressing MODE Switch (COOL OR HEAT)

Depress RUN/STOP switch.
a.
The TEST RUN operation will be started. (The 2 hours OFF-TIMER will be set and the TEST RUN operation will be finished
after 2 hours unit operation or by depressing the RUN/STOP switch again).
N O T E
• TEST RUN operation ignores the temperature limitation and ambient temperature during heating operation to have
a continuous operation, but the protections are alive. Therefore, the protection may activate when the heating TEST
RUN operation is performed in high ambient temperature.
• TEST RUN operation time can be modifyed / increased depressing the time switch in the Remote Control.
b.
If the unit do not start or the operation lamp on the remote control switch is flickered, some abnormalities exist. →Go to 