Test Run Procedure Using The Remote Control Switch - Hitachi RAS-(3-6)HVRNM2E Service Manual

7 Test Run

7.2 Test run procedure using the remote control switch

1 Turn ON the power source to the indoor and outdoor units.
2 Select the TEST RUN mode by using the remote control
switch: press MODE switch and the OK switch simultaneously
for more than 3 seconds.
a. If the TEST RUN indication and the counting number of the
connected units to the remote control switch (for example
05) are displayed on the remote control switch, the con-
nection of remote control cable is correct. Go to point 4.
b. If no indication or 00 appears or if the number of the units
that is displayed is smaller than the actual number of the
units, there is some abnormal operation. Go to point 3.
Remote control switch
indication
• The power source is
not turned ON.
• The connection of
the remote control
No indication
cable is incorrect.
• The connect wires
of the power supply
line are incorrect or
loosened.
• The setting of the
unit number is inco-
rrect.
• The connection of
The counting number of
the control cables
the connected units is
between each indo-
incorrect
or unit is incorrect.
(When multiple units
are
one remote control
switch).
Go back to point 1 after the check.
3 Select the TEST RUN mode by pressing MODE (COOL or HEAT).
4 Press RUN/STOP switch.
a. The TEST RUN operation will start. (The TEST RUN operation will be finish after two hours. You can also finish the
TEST RUN operation by pressing the RUN/STOP switch again).
b. If the unit does not start or if the operation LED on the remote control switch is flickering, there is some abnormal
operation. Go to point 6.
176
SMGB0064 rev.0 - 08/2011
Inspection points after
Fault the power source is
OFF
a The connection bet-
ween the
control and the unit
is correct
b Connecting points of
the remote control
cable.
c The contact of the
connectors of the
remote cable.
d The screw fastening
of each
board.
a
Settings of the DIP
switches on the pr-
inted circuit board.
b Wire connection
order of the bridge
cable.
c Connecting points of
the bridge cable.
controlled by d The contact of the
connectors of the
bridge cable.
remote
terminal