Night Operation (Sound Reduction) Control - Toshiba MMY-MAP0726FT2P-UL Service Manual

7-2-5. Night operation (sound reduction) Control

Mode name: TCB-PCMO4UL
SW1: Night time signal switch
Operation
This function decreases noise at night or other times as necessary.
Terminal Input signal
ON
OFF
COOL
(SW1)
ON
OFF
The input signal is recognized during its rising/falling phase.
(After reaching the top/bottom of the rising/falling edge, the signal must remain there for at least 100 msec.)
The optional P.C. board should be connected to the header outdoor unit (U1).
The system's capacity is reduced during low-noise operation.
The table below provides a rough guide to this capacity reduction.
Outdoor unit During low noise
(base unit)
072 type
* Position of noise measuring device: 3.3" (1 m) from the front face of the set and 4.9" (1.5 m) above ground
(in anechoic chambers)
Header outdoor unit
Connection
Outdoor unit
cable
interface PCB
C N 5 0 8
Operation
Night time control
Normal operation
mode dB(A)
50 Approx. 85%
Locally procured
Optional PCB
TB1
COM
P J 1 7 COOL
HEAT Shield
wire
Capacity
Cooling Heating
Approx. 80%
− 72 −
SW1
Relative to maximum capacity