Toshiba SUPER MMK-AP0073H (IN) Service Manual page 37

12
TEST RUN
A wired remote controller is necessary for this
function. This function cannot be operate with a
wireless remote controller.
n Before test run
• Before turning on the power supply, carry out
the following procedure.
1) Using 500V-megger, check that resistance
of 1MΩ or more exists between the termi-
nal block of the power supply and the earth
(grounding).
If resistance of less than 1MΩ is detected,
do not run the unit.
2) Check the valve of the outdoor unit being
opened fully.
• To protect the compressor at activation time,
leave power-ON for 12 hours or more be for
operating.
WARNING
• Never press the electromagnetic contactor to
forcibly perform a test run. (This is very dangerous
because the protective device does not work.)
• Before starting a test run, be sure to set addresses
following the installation manual supplied with the
outdoor unit.
n How to execute a test run
Using the wired remote controller, operate the
unit as usual.
For the procedure of the operation, refer to the
attached Owner's Manual.
A forced test run can be executed in the
following procedure even if the operation stops
by thermo. OFF.
In order to prevent a serial operation, the forced
test run is released after 60 minutes have
passed and returns to the usual operation.
CAUTION
• Do not use the forced test run for cases other than
the test run because it applies an excessive load
to the devices.
In case of wired remote controller
2, 4
3
1,5
1
Procedure
TEST
Keep button pushed for 4 seconds or more.
[TEST] is displayed on the display part and the
selection of mode in the test mode is permitted.
2
Procedure
ON / OFF
Push button.
3
Procedure
MODE
Using button, select the operation mode,
[COOL] or [HEAT].
• Do not run the air conditioner in a mode other than
[COOL] or [HEAT].
• The temperature controlling function does not work
during test run.
• The detection of error is performed as usual.
4
Procedure
ON / OFF
After the test run, push button to stop a test
1
run. (Display part is same as procedure .)
5
Procedure
TEST
Push check button to cancel (release from) the
test run mode. ([TEST] disappears on the display
and the status returns to a normal.)
In case of wireless remote controller
(Forced test operation is performed in a different way.)
REQUIREMENT
• For the operation procedure, be sure to follow the Owner's Manual.
• Finish the forced cooling operation in a short time because it applies excessive strength to the air conditioner.
• A test operation of forced heating is unavailable.
Perform a test operation by heating operation using the switches of the remote controller.
However heating operation may be not carried out according to the temperature conditions.
• Check wiring/piping of indoor and outdoor units
1. When pushing ( ) button for 10 seconds or more, "Pi!" sound is heard
and the operation changes to a forced cooling operation.
After approx. 3 minutes, a cooling operation starts forcedly.
Check cool air starts blowing. If the operation does not start,
check wiring again.
2. To stop a test operation, push ( ) button once again
(Approx. 1 second).
The louver closes and the operation stops.
• Check transmission of remote controller
1. Push "START/STOP" button of the remote controller to check an operation can also start by the remote
controller.
• "Cooling" operation by the remote controller may be unavailable according to the temperature conditions.
Check wiring/piping of the indoor and outdoor units in forced cooling operation.