Fujitsu ARU12RLF, Design & Technical Manual

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6. SYSTEM DESIGN
CHECK RUN 6.
This operation allows the air conditioner to automatically check the status of the outdoor unit
and check for wiring mistakes.
Installation mistakes and positions where errors are occurring are shown by the outdoor unit
display indicators.
* The Check run time is used only as a guide.This time differs depending on the surrounding
temperature conditions.
Check run time
Outdoor temperature
42°F (5°C) or more
Between 32°F (0°C) to
42°F (5°C)
Less than 32°F (0°C)
Number of
indoor unit
2 to 4
units
Between 30 to 50 minutes Between 40 to 110 minutes Between 100 to 170 minutes
5 to 8
units
Between 50 to 70 minutes Between 50 to 180 minutes Between 160 to 260 minutes
PRECAUTIONS & PREPARATION 6-1.
SAFETY PRECAUTIONS
Check run is performed using the switch on the outdoor unit circuit board.
When making the setting, there is a risk of electric shock, so only touch the push button.
CHECK RUN PRECAUTIONS
Do not operate the indoor unit before performing Check run.
When operating the indoor unit without performing Check run, an error code is displayed on
the indoor unit. (Main unit: Operation lamp blinks 1 time / Timer lamp blinks 5 times, Wired
remote controller: 15) Check run and normal operation cannot be performed in this state. Stop
the indoor unit operation by remote controller. When the indoor unit is in the stopped state and
error display disappears, perform Check run.
PREPARATION
To ensure safety, check that the following work, inspections and operations have been
completed.
Check Item
1) Check that all work on the piping connecting the outdoor unit, indoor units and branch box has been completed
2) Check that all work on the wiring connecting the outdoor unit, indoor units and branch box has been completed
3) Is there a gas leakage? (At pipe connections {flange connections and brazed areas})
4) Is the system charged with the specified volume of refrigerant?
5) Is a breaker installed at the power supply cable of outdoor unit and every Branch boxes?
6) Are the wires connected to the terminals without looseness, and in accordance with the specifications?
7) Is the 3-way valve of the outdoor unit open? (Gas pipe and liquid pipe)
8) Is power supplied to the crank case heater for more than 12 hours?
9) Has the power supply of the all indoor units turned off ? (Remote controller)
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