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4-5. TEST UN
detected. Thus, be sure to perform the test run one by one.
About the restart protective mechanism
Wiring/piping correction function
Note:
During detection, the operation of the indoor unit is controlled by the outdoor unit. During detection, the indoor unit automatically stops operation. This is not a mal-
function.
Procedure
power supply.
is shown by LED indication. Details are described in the following table.
(SW871) again.
switch (SW871) again.
manner by operating the indoor units one by one.
damage.
before operating this function.
4-6. EXP ANATI N T T E USE
5. PUMPING D WN
When relocating or disposing of the air conditioner, pump down the system following the procedure below so that no refrigerant is released into the atmosphere.
5) Start the emergency COOL operation on all the indoor units.
6) When the pressure gauge shows
to the indoor unit installation manual about the method for stopping the operation.)
* If too much refrigerant has been added to the air conditioner system, the pressure may not drop to 0.1 to 0 psi [Gauge] (0.05 to 0 MPa), or the protection function
When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes.
The compressor may burst and cause injury if any foreign substance, such as air, enters the pipes.
En-7
WARNING
ED indication during detection:
LED1
LED2
(Red)
(Green)
Lighted
Lighted
Once
esult of piping/wiring correction function
LED1
LED2
(Red)
(Green)
Completed
Lighted
Not lighted
Lighted
(Problem corrected or
normal)
Not completed
Once
Once
Once
(Detection failed)
Other indications
Result
-
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