Grounding; Test Run - Toshiba RAS-3M18S3AV-E Manuel D'installation

Outdoor Unit
4. Connect the wires for the power source and each indoor unit.
• Connect the connecting cable to the terminal as identifi ed by the
matching numbers on the terminal block of the indoor and the outdoor
unit.
5. Fix the wiring connections for the power source and each indoor unit
securely using a cord clamp.
6. Attach the terminal cover and the valve cover.
Stripping Length of connecting cable for outdoor unit
1 2 3
5
55
Earth wire
Connecting cable
Earth screw
Connecting cable
Unit A
Earth screw
Connecting cable
Unit B
8

Grounding

This air conditioner must be grounded without fail.
• Grounding is necessary not only to safeguard against the possibility
of receiving an electric shock but also to absorb both static, which is
generated by high frequencies and held in the surface of the outdoor unit,
and noise since the air conditioner incorporates a frequency conversion
device (called an inverter) in the outdoor unit.
• If the air conditioner is not grounded, users may receive an electric shock
if they touch the surface of the outdoor unit and that unit is charged with
static.
9

Test run

Wiring/Piping Check
■
CAUTION
Electric current is applied on the
control board. Beware of electric
shock.
1. Remove the valve cover screws.
2. Pull the valve cover in the direction of arrow, and remove it.
1116691001-1.indb 10 1116691001-1.indb 10
L N
5
5
55
30
30
Power cord
Earth wire
Earth screw
Power cord
Earth screw
Connecting cable
Unit C
Valve cover
LED Service switches
D801 D803 D805 SW02
D800 D802 D804 SW01
3. Turn on the circuit breaker to supply electricity.
In the initial LED display status, D805 is lighted as below.
: ON,

D800 D801
 
Start running all the indoor units connected to the outdoor unit in the
cooling mode.
(The indoor unit in the room that doesn't operate the cooling mode cannot
be checked.)
5
4. After 5 minutes, hold down SW01 for at least 5 seconds, and check that
D800 is lighted and D804 light is fl ashing ( 1 time/sec.).
D800 D801
 
5.
Press the SW01 4 times until the LED is displayed as below.
D800 D801
 
6.
Press SW02 for 1 times. Then D805 light is flashing (5 times/sec.).
D800 D801
 
7.
Hold down SW02 for at least 5 seconds. Then the wiring/piping check starts
automatically. (The LED display is lighted for a moment.)
D800 D801
 
•
If no problems are detected, the checking operation returns to the normal
operation automatically. The LED is displayed as below.
D800 D801
 
8.
The below is displayed when the error is detected.
(* Repetition of 3 sec ON / 0.5 sec OFF)
D800 D801
* *
Press the SW01 3 times until the LED is displayed as below, to check the
room judged as error.
D800 D801
 
Incorrect wiring/piping can be checked by pressing SW02. The LED is
displayed as below. Turn off the circuit breaker, then check wiring/piping
again.
D800 D801 D802 D803
   
   
   
   
   
   
   
   
• The D800 LED represents unit A.
• The D801 LED represents unit B.
• The D802 LED represents unit C.
9. When you want to start over the operation of the SW01 and SW02, press
the SW01 and the SW02 at the same time for 5 sec. (The procedure will
set back to step 3.) However, do not execute the operation during the
check. If by any chance the check is stopped by the operation, start over
the check after turning off the power once.
10. Notes
• It sometimes takes about 30 minutes maximum for the check.
• During the check, the compressor and the fan of the outdoor/indoor unit
repeat ON/OFF.
• You cannot check wiring/piping when the external temperature is 5°C
or less. Also, there is a possibility to misjudge if the indoor temperature
becomes too low by cooling operation. In that case, execute the cooling
operation for per room and check if the connection is normal.
10
Installation Manual
: OFF, : Rapid Flashing (5 times/sec.),

: Slow Flashing (1 time/sec.)

D802 D803 D804 D805
   
D802 D803 D804 D805
   
D802 D803 D804 D805
  
D802 D803 D804 D805
 
D802 D803 D804 D805
   
D802 D803 D804 D805
   
D802 D803 D804 D805
* * * 
D802 D803 D804 D805
  
Check result
D804 D805 Description
Normal operation (no error)
 
Trouble in unit A
 
Trouble in unit B
 
Trouble in unit C
 
Trouble in unit A and B
 
Trouble in unit A and C
 
Trouble in unit B and C
 
Trouble in unit A, B and C
 
EN
EN
EN
EN
EN
EN
EN
9/27/16 3:34 PM 9/27/16 3:34 PM