Outdoor Unit Input/Output Connector; State (Cn51); Auto Change Over (Cn3N); Silent Mode/Demand Control (Cn3D) - Mitsubishi Electric PUMY-P250YBM Technical & Service Manual

8-5. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR

State (CN51)

A
L
1
~ L
2
E

Auto change over (CN3N)

A
SW1
~
E
SW2

Silent Mode/Demand Control (CN3D)

A
SW1
~
E
SW2
The silent mode and the demand control are selected by switching the DIP switch 9-2 on outdoor controller board.
It is possible to set it to the following power consumption (compared with ratings) by setting SW1, 2.
Silent mode
Demand control
OCH760
B C
X
X
Y
Y
5
4
3
G
F
B C
X
1
X
2
3
Y
Y
G
F
B C
X
1
X
2
3
Y
Y
G
F
Outdoor controller board DIP SW9-2 SW1 SW2
OFF
ON
A Distant control board
B Relay circuit
D
C External output adapter (PAC-SA88HA-E)
CN51
D Outdoor unit control board
5
1
L : Error display lamp
1
L : Compressor operation lamp
2
X, Y: Relay (coil rating: ≤ 0.9 W. 12 VDC)
A Remote control panel
D
B Relay circuit
CN3N C External input adapter (PAC-SC36NA-E)
D Outdoor unit control board
1
SW1: Switch
3
SW2: Switch
X, Y: Relay (contact rating: ≥ 0.1 A. 15 VDC)
(min. applicable load: ≤ 1 mA)
ON
SW1 Heating
Validity of SW1
SW2
A Remote control panel
D
B Relay circuit
CN3D
C External input adapter (PAC-SC36NA-E)
1
D Outdoor unit control board
3
SW1: Switch
SW2: Switch
X, Y: Relay
(contact rating: ≥ 0.1 A. 15 VDC)
(min. applicable load: ≤ 1 mA)
Cooling
OFF OFF Normal
ON OFF Silent mode
OFF ON Super silent mode 1
ON ON Super silent mode 2
OFF OFF 100%
ON OFF 75%
50%
ON ON
OFF ON
96
E Lamp power supply
F Procure locally
G Maximum 10 m
E Relay power supply
F Procure locally
G Maximum 10 m
OFF
Cooling
Invalidity of SW1
E Relay power supply
F Procure locally
G Maximum 10 m
Function
Heating
Normal
Silent mode
Silent mode
Silent mode
(Normal)
0% (Stop)