Mitsubishi Electronics MUY-ANA, MS-AWA, MUZ-ANA - U Opening before stop → 500 pulse in 15 minutes

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3-2. EXPANSION VALVE CONTROL (LEV CONTROL)

Linear expansion valve (LEV) is controlled by “Thermostat ON” commands given from each unit.

Indoor unit status

LEV opening

Stop of all indoor unit

Opening before stop → 500 pulse in 15 minutes

When outdoor unit is operating,

COOL : 5 pulse (full closed)

some indoor units stop and some

HEAT :(MXZ-2A / 3A30NA) : 140 pulse (slightly opened)

operate.

:(MXZ-3A30NA-1 / 4A ) : 100 → 59 pulse

Thermostat OFF in COOL or DRY

When the outdoor unit operates (When the other indoor unit operates) : 5 pulse.

When outdoor unit stops. (When the other indoor unit stops or thermo off) :

mode

Maintain LEV opening before stop → 500 pulse in 15 minutes

 

 

 

 

• LEV opening for each indoor unit is determined by adding adjustment in accordance

 

with the number of operating unit and the capacity class to standard opening, based

 

on the operation frequency:

 

Ex.) Opening 130 pulse in standard opening 1 → Minimum 80 pulse, Maximum 205

 

pulse. (Capacity code 4 at 1 unit operation) (Capacity code 1 at 3 units operation)

Thermostat ON in COOL or DRY

• After starting operation, adjustment in accordance with intake super heat, discharge

mode

temperature is included in standard opening. 1

 

NOTE: LEV opening in each frequency at DRY operation and COOL operation is the

 

same. However, velocity and compressor operation frequency controls are differ-

 

ent. See 3-3. OPERATIONAL FREQUENCY RANGE

 

(As far as the indoor unit velocity control goes, refer to DRY operation in MICRO-

 

PROCESSOR CONTROL in indoor unit.)

 

 

 

• When the outdoor unit operates. (When the other indoor unit operates) : 140 pulse.

Thermostat OFF in HEAT mode

• When the outdoor unit stops. (When the other indoor unit stops or thermo off) : Main-

 

tain LEV opening before stop → 500 pulse in 15 minutes. “

 

• LEV opening for each indoor unit is determined by adding adjustment in accordance

 

with the number of operating unit and the capacity class to standard opening, based

 

on the operation frequency:

Thermostat ON in HEAT mode

Ex.) Opening 120 pulse in standard opening 1 → Minimum 70 pulse, Maximum 165

 

pulse. (Capacity code 4 at 1 unit operation) (Capacity code 1 at 3 units operation)

 

• After starting operation, opening becomes the one that adjustment in accordance with

 

discharge temperature was added to basic opening. 1 “

1 LEV opening when the outdoor unit is operating: Upper limit 500 pulse, Lower limit 53pulse (MXZ-2A / 3A30NA), 59 pulse (MXZ-3A30NA-1 / 4A).

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Contents Revised EDITION-B ContentsRevision a MXZ-2A20NA MXZ-3A30NA MXZ-4A36NA MS-A09WA MU-A09WA MS-A12WA MU-A12WACool Operation MS-AWA MU-AWAOperation time chart Example When the room temperature is under 73 FHorizontal vane Auto Vane OperationMSZ-A MSY-A MSZ-FD MSZ-D MSY-D Low outside temperature operationMSZ-ANA MSY-ANA MSZ-FDNA MSY-DNA MSZ-DNA MUZ-ANA MUY-ANA MUZ-FDNA MUY-DNA MUZ-DNAHeat Operation MSZ Defrosting MSZ-A24Gradation of fan speed in initial Overload startingMode selection Auto Change Over ··· Auto Mode Operation MSZMUZ-FD MUZ-D MUY-D Outdoor FAN Motor ControlMUZ-A MUY-A Function of main parts Inverter System ControlMUZ-FD MUZ-A24 MUY-A24 MUZ-D MUY-D Input current waveform without PAM Outline of simple partial switching methodAt normal operation Purpose of PAM adoptionCompressor Intelligent power moduleElimination of electrical noise Control Method of Rotation Times Sine wave controlMUZ-FD12 Operational Frequency Control of Outdoor UnitMUZ-FD09 Pulse MUZ-A09/12/15/17 MUY-A15/17 Cool · DRY ModeHeat Mode Expansion Valve Control LEV ControlMUZ-A24 MUZ-A09/12MUZ-A15/17 MUY-A15/17260 MXZ-ANA Inverter main power supply circuitProtects transistors from over current Opening before stop → 500 pulse in 15 minutes MXZ-3A30NA MXZ-2A20NA/3A30NAMXZ-2A20NA Cool HeatMXZ-3A30NA MXZ-2A20NAMXZ-4A36NA MXZ-2A20NA Exclusive LEVReceiver LEV MXZ-3A30NA Exclusive LEVCool DRY Heat MXZ-3A MXZ-4A MXZ-2A20NAMXZ-3A30NA MXZ-2A∆RT Operational Frequency RangeMXZ-4A Discharge Temperature Protection ControlHeat Defrosting Control Outdoor FAN ControlPRE-HEAT Control MXZ-2A20NA- 1 MXZ-3A30NA MXZ-4A36NA Made in Japan DRY OperationHeat Operation High pressure protection
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MSZ-FDNA, MUZ-FDNA - U, MUZ-FDNA, MUZ-ANA - U, MUY-ANA specifications

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