Outdoor Unit Actuator Control - Mitsubishi Electric MSC-CA20VB Service Technical Manual

1-10. OUTDOOR UNIT ACTUATOR CONTROL

MUX-2A28VB
INDOOR UNIT
ACTUATOR
COMPRE-
ON
MC
SSOR
OFF
ON
OUTDOOR
MF
FAN MOTOR
OFF
21R ON (CLOSE)
(BALANCE)
SOLENOID
OFF (OPEN)
VALVE
ON (OPEN)
21R1
OFF (CLOSE)
ON (OPEN)
21R2
OFF (CLOSE)
MUX-3A60VB MUX-3A63VB
INDOOR UNIT
ACTUATOR
ON
MC1
OFF
COMPRE-
SSOR
ON
MC2
OFF
ON
OUTDOOR
MF61
FAN MOTOR
OFF
ON (OPEN)
21R3
OFF (CLOSE)
ON (OPEN)
21R4
SOLENOID
OFF (CLOSE)
VALVE
ON (CLOSE)
21RB
OFF (OPEN)
"–" means that the indoor unit is not related to the control of actuator.
A B
ON ON
ON OFF
OFF ON
OFF OFF
ANY UNIT ON
OFF OFF
ON ON
ON OFF
OFF ON
OFF OFF
ON –
OFF –
– ON
– OFF
A B C
ON – –
OFF – –
– ON ON
– ON OFF
– OFF ON
– OFF OFF
ANY UNIT ON
OFF OFF OFF
– ON –
– OFF –
– – ON
– – OFF
– ON ON
– ON OFF
– OFF ON
– OFF OFF
14
MUX-2A59VB MUX-2A70VB
INDOOR UNIT
ACTUATOR
ON
MC1
COMPRE-
OFF
SSOR
ON
MC2
OFF
OUTDOOR
ON
MF61
FAN MOTOR
OFF
MUX-4A73VB
INDOOR UNIT
ACTUATOR
ON
MC1
COMPRE-
OFF
SSOR
ON
MC2
OFF
OUTDOOR ON
MF61
FAN MOTOR
OFF
ON (OPEN)
21R1
OFF (CLOSE)
ON (OPEN)
21R2
OFF (CLOSE)
ON (OPEN)
21R3
OFF (CLOSE)
ON (OPEN)
21R4
SOLENOID
OFF (CLOSE)
VALVE
ON (CLOSE)
21RA
(BALANCE)
OFF (OPEN)
21RB
ON (CLOSE)
(BALANCE)
OFF (OPEN)
A B
ON –
OFF –
– ON
– OFF
ANY UNIT ON
OFF OFF
A B C D
ON ON – –
ON OFF – –
OFF ON – –
OFF OFF – –
– – ON ON
– – ON OFF
– – OFF ON
– – OFF OFF
ANY UNIT ON
OFF OFF OFF OFF
ON – – –
OFF – – –
– ON – –
– OFF – –
– – ON –
– – OFF –
– – – ON
– – – OFF
ON ON – –
ON OFF – –
OFF ON – –
OFF OFF – –
– – ON ON
– – ON OFF
– – OFF ON
– – OFF OFF