II - 34
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 (S004) key for longer than 1 second, to display the menu item number. “
.”
b) Press the UP (S005) or DOWN (S006) key to select the menu item number “
.”
c) After “
.” is displayed the status of indoor units connected is displayed (Figure 22).
d) Then press the SET (S007) key to display the indoor
unit thermostat. (Figure 23)
* 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 24)
In this state, the display screen for units 1–32 and
display screen for units 33–48 can be switched by
pressing the UP (S005) or DOWN (S006) key. The
vertical bars from the upper left to upper right are in-
door units 33 to 44 and the vertical bars from lower
left to lower right are indoor units 45 to 48.
Note: The display screen for units 1–32 has one dot in
the bottom right and the display screen for units
33–48 has two dots in the bottom right. (Refer to
Figure 24)
* 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.
e) While the indoor unit thermostats are displayed, press the SET (S007) key. The display changes to indoor unit
forced thermostat OFF setting. Select the indoor units that are to be forced OFF. (* Set this setting from the
smallest address unit of the corresponding refrigerant system.)
* A light turns on to indicate that the thermostat of the corresponding indoor unit is ON, blinks at 1-second
intervals to indicate the thermostat of the corresponding indoor unit is OFF, blinks at 0.5-second intervals to
indicate the forced thermostat OFF setting is set for the corresponding indoor unit, and blinks at high speed
to indicate the number of the indoor unit being set.
* Use the UP (S005) or DOWN (S006) key to select the number of the indoor unit to be forced to stop. The
screen automatically switches to display units 33–48 for numbers exceeding 32.
Figure 22
Figure 23
Figure 24
Unit 1 Unit2 Unit 3 Unit 4 Unit 5 Unit 6 Unit 7 Unit 8 Unit 9 Unit10 Unit 11 Unit 12
Unit 13 Unit14 Unit 15 Unit 16 Unit 17 Unit 18 Unit 19 Unit 20 Unit 21 Unit22 Unit 23 Unit 24
Unit 33 Unit 34 Unit 35 Unit 36 Unit 37 Unit 38 Unit 39 Unit 40 Unit 41 Unit42 Unit 43 Unit 44
Unit 45 Unit 46 Unit 47 Unit 48
Unit 31 Unit 32
Unit 25 Unit 26 Unit 27 Unit 28 Unit 29 Unit 30
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2012/05/22 11:24:56
2012/05/22 11:24:56