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72
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'11 • KX-T-166
(2)
Silent mode control
(a)
Start conditions
When all of the following conditions is established
(i)
At the start of silent mode initiated by the indoor unit or when the silent mode input is made effective (short-circuited)
at the external input terminal (Factory default: CnG2) on the outdoor unit
(ii)
When the outdoor unit operation mode is cooling or heating
(iii)
When the outdoor air temperature satisfies the following conditions
1) Silent setting 0, 1: Effective in zone A and B
2) Silent setting 2, 3: Effective in zone B
(Note) Silent setting 0 to 3 can be swiched by [P05] of 7-segment display.
Valid (zone B)
Valid (zone A)
Invalid
27
29
31
<Outdoor operation mode - Heating>
<Outdoor operation mode - Cooling>
Outdoor air temperature (°C)
Valid (zone A)
Valid (zone B)
Invalid
2
4
6
Outdoor air temperature (°C)
(iv) It is excluded when the following invalid conditions are established
(For prevention of anomalous pressure rise at start)
• For 30 seconds after either compressor has been turned ON
(During a special operation)
• During the 4-way valve switching safeguard
• During the defrost control
• During the oil return control
• During the moved pump down control
• During the pump down control for removal of the unit
(Note) Any controls affected by the restriction of compressor and outdoor fan capcity during the silent mode are excluded.
(b) Control contents
Setting values can be changed with the silent setting as follows.
(i) Upper limit of compressor speed is restricted.
(ii) Upper limit of outdoor fan speed is restricted.
(c) End condition
• When the starting conditions are not established
Item
Setting
Upper limit of compressor speed
Upper limit of outdoor fan speed
rps
min
−
1
P224
P280
P224
P280
Silent setting 0
(Factory default)
80
100
780
800
Silent setting 1
74
88
700
700
Silent setting 2
64
80
575
575
Silent setting 3
50
60
540
540
