Test Run; Before Test Run; Heating Operation - Toshiba Carrier MMU-UP0071HP-UL Manuel D'installation

9

Test run

 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 terminal 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.
• 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.
Requirements for turning thermostat OFF
Cooling operation
• When the outdoor/suction air temperature is lower than or equal to 66.2°F (19°C).
• When the outdoor/suction air temperature is lower than or equal to 37.4°F (3°C) above the set temperature.

Heating operation

• When the outdoor/suction air temperature is lower than or equal to 14°F (-10°C).
• When the outdoor/suction air temperature is higher than or equal to 59°F (15°C).
• When the outdoor/suction air temperature is higher than or equal to 37.4°F (3°C) above the set temperature.
 Execute a test run
Use the remote controller to check operations. For the
operation procedures, refer to the Owner's Manual
provided. You can do forced operations by using the
test mode function in the following procedure, under
conditions that the thermostat is off.
This test mode function will automatically stop after
60 minutes, to prevent continuous forced operation,
and do normal operation (operation according to set
temperature).
* Thermostat off: When the temperature of the room
reaches the set temperature, the compressor of the
outdoor unit stops, and operation switches from
"Cool" or "Heat" to "Fan". The indoor unit is
operating, but the outdoor unit repeatedly turns
on/off in response to the room temperature.
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CAUTION
• This test mode function does forced operation that
ignores the set temperature, so be aware of the room
temperature and be sure to do a stop / end operation
when your work is finished.
• This test mode function puts a higher than normal load
on the equipment, so only use it for inspections and to
check operations.
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1
In the "Field setting menu" screen, press
[ ] and [ ] to select "Test mode", and
then press [ Set/Fix]
Test mode is set, and returns to the "Field setting
menu" screen. Press the [ Return] button 2
times, to open screen (2).
2
Press [ ON/OFF]
Operation starts, and in test mode screen (1)
opens. (While stopped, it is screen (2))
Test mode is done while the operating mode is
set to "Cool" or "Heat".
The temperature cannot be set in test mode.
Check codes are displayed in the normal way.
3
After completing test mode, in the "Field setting
menu" screen, press [ ] and [ ] to select
"Test mode", and then press [ Set/Fix]
Screen (3) appears.
Press [ Set/Fix] to end test mode and do
normal operation.
EN
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