Outdoor Fan Control - Panasonic U-8ME1E8E Service Manual

5. Outdoor Fan Controls
5-6. Silent Mode
This unit includes 2 types of silent modes.
Max. fan mode in silent mode
Outdoor unit cacacity -3dB mode -5dB mode
8 HP
10 HP
12 HP
14 HP
16 HP
18 HP
20 HP
Selecting the silent mode results in operation that gives priority to reducing noise, because these modes involve
restrictions on outdoor unit fan modes, the capacity will be somewhat reduced.
* The compressor capacity (frequency) is not limited. However, the capacity of the compressor decreases by road
map control because of the pressure caused by the decreased fan rotational speed.
* To activate this function, it is necessary to set it to each outdoor unit.
CODE: 05
Setting No Silent mode
0 Invalidity
(Factory preset mode)
1 Silent is given priority
2
3
4
5 Capacity is given priority
6
7
8
9 Controlled in moderation
10
11
12
* When the setting is "external input to PCB necessary", this function works by short circuiting "SILENT" pins.
* When the setting is "external input to PCB unnecessary", this function always works.
* When the setting is "Capacity is given priority", this function works excluding the following conditions.
Condition that silent mode interrupts
Cooling operation: Ambient temperature ≧ 38℃
Heating operation: Ambient temperature ≦ 2℃
This function will be useful for nighttime in summer.
* When the setting is "Controlled in moderation", max. fan mode is decided in the following formula.
Max. fan mode = 14 - ( 35 – Ambient temperature) / 2
However, minimum fan mode is "6", maximum is "14". (When high static pressure mode, max is "15")
5-7. High Static Pressure Mode
The outdoor unit allows a high static pressure changing the settings.
The maximum permissible static pressure is 8 mmAq.
EEPROM setting in each outdoor unit
CODE: 8F
Setting No
0 Invalid (Factory preset mode)
1 High static pressure mode
2 - 6 No use (Never use)
11 8
11 10
10 9
9 8
9 8
11 10
11 10
External input to PCB
-
Necessary
Unnecessary
Necessary
Unnecessary
Necessary
Unnecessary
1 - 17
Control Functions-Outdoor Unit
Max. effect Capacity reduction
- -
-3dB Approx -1 HP
-5dB Approx -2 HP
-3dB Approx -1 HP
-5dB Approx -2 HP
-3dB Max. -1 HP
-5dB Max. -2 HP
-3dB Max. -1 HP
-5dB Max. -2 HP
-3dB Max. -1 HP
-5dB Max. -2 HP
-3dB Max. -1 HP
-5dB Max. -2 HP
2WAY SYSTEM
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