Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 29

6) CnS2 performs the following operation according to switching the jumper wire (J13) shorted or open.
In case of pulse input, the pulse width is 500ms or larger.
① J13 − Shorted
CnS2 input
Remote controller operation
Remote controller display
Air-conditioner operation/stop
② J13 - Open
CnS2 input
Remote controller operation
Remote controller display
Air-conditioner operation/stop
(2) Silent mode control
(Note) Following explanation is based on using CnG2 terminal and setting functionwith 7-segment display [P14]-[3] or -[8]
However other terminals can be used with following function setting of 7-segment display
CnS1: [P11]-[3] or -[8]
(a) Silent mode is commanded either from the indoor unit (remore controller setting) or from the master outdoor unit (CnG2).
(b) When the "Silent mode start" signals is received from one of indoor units, it enters the silent mode operation.,
(c) When CnG2 of master unit is shorted after setting function [P14]-[3] (Factory setting) with 7-segment display, it enters the
silent mode operation. (If the signal is input to the slave unit, it is invalid)
(d) When the "Silent mode start" signal from indoor unit and the "Silent mode" signal from outdoor unit are received, it enters
the silent mode operation under "or"condition.
(e) When silent mode signals from all indoor units become "Silent mode end" and when silent mode signal input to CnG2 on
outdoor unit becomes open, the silent mode operation is reset.
(f) The silent mode operation is effective within the following temperature range.
• Cooling
Effective
ON (Shorted)
Normal
PUSH
Compressor OFF
ON
PUSH
Remote
Compressor OFF
CnS1: [P12]-[3] or -[8]
Reset
29 31°C
Outdoor air temperature
ON (Open)
Demand control
PUSH PUSH
Remote
ON
OFF
OFF
Demand control
PUSH PUSH
CnG1: [P13]-[3] or -[8]
• Heating
Reset
2
Outdoor air temperature
27
- -
ON (Shorted)
Normal
PUSH
ON
Compressor OFF
OFF
OFF
ON
Demand control
PUSH
Compressor OFF
Effective
4°C