Outdoor Fan Control - Panasonic U-72MF2U9 Service Manual

5. Outdoor Fan Control

5-1. Fan Mode
These outdoor units utilize a DC fan motor that can be controlled in a maximum of 15 steps (15 modes).
However, fan modes 14 and 15 can only be used if high static pressure mode has been set.
* For information concerning EEPROM settings, refer to the field application functions.
The following table shows the maximum and minimum fan mode and fan forced mode for each unit.
Standard
Maximum value
High static
pressure mode
setting
Minimum value *
Fan forced mode
Silent mode
* For the sake of protecting temperature of the electrical parts, the minimum values of the fan mode may
sometimes increase in accordance with the ambient temperature or the amount of secondary current.
5-1-1. High static pressure mode
The outdoor unit allows a high static pressure changing the settings.
The maximum permissible static pressure is 0.01psi (80Pa).
EEPROM setting in each outdoor unit
CODE : 8F
Setting No.
0
1
2
3
4
5
6
However, maximum fan mode is upper limit.
Status of
heat exchanger
Condenser
Evaporator
Condenser
Evaporator
Control for fan crack prevention
Snowfall sensor control
Invalid (factory preset mode)
High static pressure mode
Never use
Never use
Never use
Never use
Never use
Ambient 50°F
>
temperature (10°C)
Ambient 50°F
≤
temperature (10°C)
Ambient 50°F
>
temperature (10°C)
Ambient 50°F
≤
temperature (10°C)
Silent mode
1 - 19
3WAY VRF SYSTEM
Control Functions
Type of outdoor unit
72 96 120 144
13 11 12 12
13 13 12 12
13 13 13 13
15 15 12 12
15 15 12 12
15 15 13 13
1 1 1 1
9 9 7 7
11 10 8 8
9 9 10 10
1
2
3
4
5
6
7
8
9