Applied Control Of Outdoor Unit; Outdoor Fan High Static Pressure Shift - Toshiba MCY-MUG0401HSW-E Service Manual

019 Outdoor Fan High Static
Pressure Shift
01A Operation standby Heating
standby
027 Night operation (sound reduction)
control mode setting
03F Operation Control during
Overflow Detection of Indoor Unit
040 Operation Control during Outside
Abnormal Input Switching control
in receiving [L30][L02] from
indoor)
045 Low frost mode setting
082 Communication setting

7-2. Applied Control of Outdoor Unit

The outdoor fan high static pressure support and priority operation mode setting (cooling / heating / number of
units / or priority indoor unit) functions are available by setting relevant switches provided on the interface P.C.
board of the outdoor unit.

7-2-1. Outdoor Fan High Static Pressure Shift

Setup
Change the outdoor DN code. (O.DN [019]) into "Outdoor Fan High Static Pressure operation."
This function must be enabled with every discharge duct connected outdoor unit.
Purpose/characteristics
Outdoor DN Code
(O.DN) Setting Operation
O.DN [019] = 0000
O.DN [019] = 0001
Specifications
Increase the speed of the propeller fan units on the outdoor fan to allow the installation of a duct with a maximum
external static pressure not greater than specified in the table below. If a discharge duct with a resistance greater
than 15 Pa (1.5 mmAq) is to be used, enable this function. The maximum external static pressures of single units
are shown below (Table 1).
Table 1: Maximum External Static Pressures of Single Outdoor Units
Model
Maximum external static pressure
( ✱ ) Outdoor unit air flow
) Calculate duct resistance from outdoor unit air flow.
(✱
0000 : Usual
0000 : None
0000 : mode 1 (50 dB)
0002 : mode 3 (44 dB)
0000 : System abnormal stop
0000 : System continuous operation
(Stop the corresponding indoor unit.)
0000: Usual
0000: TCC-Link
Operation
Normal operation
Outdoor Fan High Static Pressure operation
MCY-MUG 0401*
(Pa) 20
3
72
(m /min)
0001 : High Static Pressure
Operation
0001 : Standby
0001 : mode 2 (47 dB)
0001 : System continuous operation
(Stop the corresponding indoor unit.)
0001 : System abnormal stop
001: Low frost operation
0003 : TU2C-Link
0501* 0601*
20 20
75 75
54
0000 : Usual
0000 : None
0000 : mode 1
0000 : System
abnormal stop
0000 : System
continuous
operation (Stop
the corresponding
indoor unit.)
0001: Mode 1
0000: TCC-Link