Mitsubishi Electric PUMY-P100VHM Technical & Service Manual page 55

8-6. OUTDOOR UNIT INPUT/OUTPUT CONNECTOR
State (CN51)
Distant control
board
L
1
L
2
Preparations
in the field
L : Error display lamp
1
L : Compressor operation lamp
2
X, Y : Relay (Coil standard of 0.9W or less for DC 12V)
Auto change over (CN3N)
Distant control
board
SW1
SW2
Preparations
in the field
X, Y : Relay (DC1mA)
Silent Mode / Demand Control (CN3D)
Distant control
board
SW1
SW2
Preparations
in the field
X, Y : Relay (DC1mA)
The silent mode and the demand control are selected by switching
the Dip switch 8-1 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
External output
adapter
Relay circuit
X
X
Y
Y
5
4
3
Maximum cable
length is 10m
External output
Relay circuit
adapter
X
1
X
2
3
Y
Y
Maximum cable
length is 10m
External output
Relay circuit
adapter
X
1
X
2
3
Y
Y
Maximum cable
length is 10m
Outdoor controller board DIP SW8-1 SW1 SW2
OFF
ON
Outdoor unit
control board
CN51
Outdoor unit
control board
CN3N
SW1
SW2
Outdoor unit
control board
CN3D
Function
ON — Silent mode operation
OFF OFF 100% (Normal)
ON OFF 75%
ON ON 50%
OFF ON 0% (Stop)
55
ON OFF
Heating Cooling
Validity of SW1 Invalidity of SW1