Test Run; Before Test Run - Toshiba Carrier MMD-AP0076BHPUL Manuel D'installation

10

Test run

Before test run

Before turning on the power supply, carry out the
following procedure.
1) By using 500V-megger, check that resistance
of 1MΩ or more exists between the terminal
block L to N 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 before operating.
Do not 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, set addresses by following
the Installation Manual supplied with the outdoor
unit.
Execute a test run
When a fan operation is to be performed for an
individual indoor unit, turn off the power, short CN72
on the circuit board, and then turn the power back
on. (First set the operating mode to "fan," and then
operate.) When the test run has been performed
using this method, do NOT forget to release the
shorting of CN72 after the test run is completed.
Operate the unit with the wired remote controller as
usual.
For the procedure of the operation, refer to the
attached Owner's Manual to the outdoor unit.
A forced test run can be executed in the following
procedure even if the operation stops by thermostat-
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.
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Wired remote controller
2, 4
3
1,5
1
Push button for 4 seconds or more.
[TEST] is displayed on the display part and
the selection of mode in the test mode is
permitted.
2
Push button.
3
Select the operation mode with
button, [ 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
After the test run, push button to
stop a test run.
1
(Display part is same as procedure .)
5
Push button to cancel (release from) the
test run mode.
([TEST] disappears on the display and the status
returns to a normal.)
Wireless remote controller
1
When TEMPORARY button is pushed for
10 seconds or more, "Pi!" sound is heard
and the operation changes to test run.
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 TEMPORARY
button once again (Approx. 1 second).
Check wiring / piping of the indoor and outdoor
units in test run.
TEMPORARY button
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When a test run is not
performed properly
When a test run is not performed properly, refer to
the error code and the part to be checked on
"Troubleshooting".
When a test run is executed before installing the
external duct, a protection control may be activated
and lets the unit stop and the code P12 may be
displayed. (This is not due to a malfunction but to the
current control function of the DC motor in this unit.)
When a test run executed before installing the
external duct, select "Low" for the fan speed level or
cover the air discharge.
In addition, stop the operation before replacing the
High-efficiency filter or opening the service panel.
After the test run, reset the circuit breaker of the
indoor unit.
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