Night Operation (Sound Reduction) Control - Toshiba MMY-MAP0804HT8(Z)(ZG)-E Service Manual

6-8-5. Night operation (sound reduction) Control

SW1: Night time signal switch
Operation
This function decreases noise at night or other times as necessary.
Terminal
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 ms.)
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 mode*
(base unit)
Model 0804
Model 1004
Model 1204
Model 1404
Model 1604
* Position of noise measuring device: 1 m from the front face of the set and 1.5 m above ground (anechoic sound)
Header outdoor unit
Connection
Outdoor unit
cable
interface PCB
CN508
Input signal Operation
Night time control
Normal operation
dB(A)
50
50
50
53
53
Optional PCB
TB1
COM
COOL
PJ17
HEAT
Shield
wire
Capacity
Cooling Heating
approx. 85% approx. 80%
approx. 70% approx. 65%
approx. 60% approx. 55%
approx. 80% approx. 80%
approx. 70% approx. 70%
113
Locally procured
SW1
Relative to maximum capacity