Checking the rotation speed.
There should be no hunting (variations in the rotation speed should be within 60min
-1
).
* However, the set revolution speed varies depending on the air conditioning load, so perform this check after
about 15 minutes has elapsed since the test run has been set and when operation has stabilized.
Checking for error noise or vibrations (* Carry out these checks for all outdoor units of the corresponding refriger-
ant system.)
Change the number of indoor units from the minimum to the maximum, and at each number of indoor units
check for the presence of error noises.
a) Press the HOME (SW004) key for longer than 1 second, to display the menu item number. “
.”
b) Press the UP (SW005) or DOWN (SW006) key to select the menu item number “
.”
c) After “
.” is displayed the status of indoor units connected is displayed (Figure
5
).
d) Then press the SET (SW007) key to display the in-
door unit thermostat. (Figure
6
)
* The vertical bars from the upper left to upper right
are indoor units 1 to 12 and the vertical bars from
the lower left to lower right are indoor units 13 to 24.
The top horizontal bars from left to right are indoor
units 25 to 30 and the bottom horizontal bars from
left to right are indoor units 31 and 32. (Figure
7
)
In
this state, the display screen for units 1–32 and
display screen for units 33–64 can be switched by
pressing the UP (SW005) or DOWN (SW006) key.
The vertical bars from the upper left to upper right
are indoor units 33 to 44 and the vertical bars from
lower left to lower right are indoor units 45 to 56.
The top horizontal bars from left to right are indoor
units 57 to 62 and the bottom horizontal bars from
left to right are indoor units 63 and 64. (Figure
7
)
Note: The display screen for units 1–32 has one dot in
the bottom right and the display screen for units 33–64 has two dots in the bottom right. (Refer to Figure
7
)
* A light turns on to indicate that the thermostat of the corresponding indoor unit is ON, blinks at 1-second in-
tervals to indicate the thermostat of the corresponding indoor unit is OFF, and blinks at 0.5-second intervals
to indicate the forced thermostat OFF setting is set for the corresponding indoor unit.
Figure
5
Figure
6
Ⅲ
－
3
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