MITSUBISHI SRK50ZTL Micro Inverter Packaged Air Conditioners User Manual

: June 9, 2024
: Mitsubishi

Table of Contents

SRK50ZTL Micro Inverter Packaged Air Conditioners
References
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SRK50ZTL Micro Inverter Packaged Air Conditioners

Manual No.’19 · PAC-SM-309
updated January 27, 2020
SERVICE MANUAL

M I CRO I N V ERT ER PACK AGED AI R-CON DI T I ON ERS
(Split system, air to air heat pump type)

CEILING CASSETTE-4 WAY TYPE

Single type

Twin type

Triple type

FDT100VNAWVH FDT100VNAWPVH FDT140VNAWTVH

100VSAWVH

100VSAWPVH

140VSAWTVH

125VNAWVH

125VNAWPVH

125VSAWVH

125VSAWPVH

140VNAWVH

140VNAWPVH

140VSAWVH

140VSAWPVH

CEILING CASSETTE-4 WAY COMPACT TYPE

Twin type

Triple type

FDTC100VNAWPVH FDTC140VNAWTVH

100VSAWPVH

140VSAWTVH

125VNAWPVH

125VSAWPVH

DUCT CONNECTED-HIGH STATIC PRESSURE TYPE
Single type FDU100VNAWVH 100VSAWVH 125VNAWVH 125VSAWVH 140VNAWVH 140VSAWVH

DUCT CONNECTED-LOW/MIDDLE STATIC PRESSURE TYPE

Single type

Twin type

Triple type

FDUM100VNAWVH FDUM100VNAWPVH FDUM140VNAWTVH

100VSAWVH

100VSAWPVH

140VSAWTVH

125VNAWVH

125VNAWPVH

125VSAWVH

125VSAWPVH

140VNAWVH

140VNAWPVH

140VSAWVH

140VSAWPVH

CEILING SUSPENDED TYPE

Single type

Twin type

Triple type

FDE100VNAWVH FDE100VNAWPVH FDE140VNAWTVH

100VSAWVH

100VSAWPVH

140VSAWTVH

125VNAWVH

125VNAWPVH

125VSAWVH

125VSAWPVH

140VNAVWH

140VNAWPVH

140VSAVWH

140VSAWPVH

WALL MOUNTED TYPE

Single type

Twin type

Triple type

SRK100VNAWZR SRK100VNAWPZSX SRK140VNAWTZSX

100VSAWZR

100VSAWPZSX

140VSAWTZSX

125VNAWPZSX

125VSAWPZSX

140VNAWPZR

140VSAWPZR

V Multi System

(OUTDOOR UNIT) (INDOOR UNIT)

FDC100VNA-W FDT50VH FDE50VH

100VSA-W

60VH 60VH

125VNA-W

71VH 71VH

125VSA-W

140VNA-W

140VSA-W

’19 · PAC-SM-309

(i) Models FDC100VNA-W, 125VNA-W, 140VNA-W 1) Disassembly

PCA012D083 A

a) After the breaker is shut down, remove the service panel, top panel and rear panel. (Refer to Fig.1).

b) Don’t touch the main PCB until three minutes have passed after the breaker is shut doun.

(After having shut down the breaker, some capacitor is held by high voltage. It is very dangerous to touch

the main PCB in this condition.)

In the situation that hamesses are connected to main PCB, be sure to measure voltage (DC) on main PCB,

and check that the voltage is discharged sufficientlv (DC voltage 30 V or less). (Refer to Fig.2)

c) Disconnect the connectors, faston terminals and round terminals from the main PCB as shown in Fig.2.

And then remove the fixing screws (3 places) as shown in Fig.3.

After removing the main PCB, wipe off the heat conduction sheet neatly from the copper plate.

– 68 –

’19 · PAC-SM-309
LED2(Red) LED1(Green)
– 69 –

’19 · PAC-SM-309 2) Exchange
a) Match the setting of new main PCB switches (JSW1, SW3-7) with former main PCB. (Refer to Fig.4) b) Tum over the separator of new heat conduction sheet and paste the heat conduction sheet on the aluminum
block. (Refer to Fig.5) c) Install the attached hamess clip on the new main PCB as shown in Fig.6. 3) Installation a) Install the new main PCB on the control and tighten the screw as shown in Fig.7. b) Reconnect the connectors, faston terminals and round terminals to the main PCB as before. (Refer to Fig.2)
(Confirm that the connectors are not half inserted.)
– 70 –

’19 · PAC-SM-309
– 71 –

DIP switch setting list (Outdoor unit)

Moedls FDC100, 125, 140VNA-W, 100, 125, 140VSA-W

Switch

Description

Default setting

Remark

SW1 JSW1-1 JSW1-2 JSW1-3 JSW1-4 SW3-1 SW3-2 SW3-3 SW3-4 SW4-1 SW4-2 SW4-3 SW4-4 SW5-1 SW5-2 SW5-3 SW5-4 SW6-1 SW6-2 SW6-3 SW6-4 SW7-1 SW7-2 SW7-3

(See table 1)

OFF

Model selection

As per model

Reserved

OFF

Defrost condition

Normal*/Cold region

OFF

Snow protection control

Normal*/Snow protection

OFF

Test run SW

Normal*/Test run

OFF

Test run mode

Cooling*/Heating

OFF

Reserved

OFF

Cancel measuring of refrigerant leak

Normal*/Cancel

OFF

Reserved

OFF

Reserved

OFF

Utilization of existing piping control

Normal*/Existing piping control OFF

Hight difference of IU and OU control Normal*/High head control

OFF

Reserved

OFF

Reserved

OFF

Reserved

OFF

Reserved

OFF

Reserved

OFF

Inverter checker mode

Normal*/Check INV

OFF

SW1 function selection

OFF

Frost protection by frequent external ON/OFF Normal*/connected external device OFF

Silent mode selection

Normal*/Silent mode

OFF

Normal Normal Normal Cooling Normal
Normal Normal
Normal Normal Normal

See table 2
Keep OFF Refer to page 45 Refer to page 44 Refer to page 48 Refer to page 48 Keep OFF Detection function of error in E57 refrigeration system protection (OFF: Detection / ON: Cancel to detect) Keep OFF Keep OFF See Note 1 When the outdoor unit is positioned higher than 30m (OFF : Normal / ON : high head) Keep OFF Keep OFF Keep OFF Keep OFF Keep OFF Refer to page 79 See table1 In case external device switches ON/OFF frequently, switch to ON to start defrost operation even though short operation time. Refer to page 48

Default setting

Table 1: SW1 fuction selection

0: OFF 1:ON

SW7-1

SW1 function

Remark

0 Pump down operation

Refer to page 49

1 Reset cumulative time of compressor operation Reset of operation time after replacing a compressor

– 76 –

Table 2: Outdoor unit model selection with JSW1-1-JSW1-3 0: OFF 1:ON

100VNA 100VSA 125VNA 125VSA 140VNA 140VSA

JSW1-1

0

1

0

JSW1-2

0

1

JSW1-3

0

’19 · PAC-SM-309

Note 1: Utilization of existing pipe
1 In case of reusing annealed pipe ø19.05 × t1.0, be sure to turn the DIP switch on the outdoor PCB ON as shown in the table because of its insufficient strength. If its material is 1/2H or its thickness is 1.2mm or more it is no necessary.
2 If bendng radius of existing pipe is less than R70mm, be sure to turn the DIP switch on the outdoor PCB shown in the table due to its insufficient strength.

’19 · PAC-SM-309

(5) Check of anomalous operation data with the remote control (a) In case of RC-EX3A remote control [Operating procedure] On the TOP screen, touch the buttons in the order of “Menu” “Service setting” “Service & Maintenance” “Service password” “Set” “Error display” “Error history”. When only one indoor unit is connected to the remote control, followings will be displayed. 1. When there is any anomaly: “Loading. Wait a while” is displayed, followed by the operation data at the occurrence of anomaly Contents of display Error code Number and data item 2. When there is no anomaly: “No anomaly” is displayed, and this mode is terminated. When two or more indoor units are connected to the remote control, followings will be displayed. 1. When there is any anomaly: If the unit having anomaly is selected on the “Select IU” screen, “Loading. Wait a while” is displayed, followed by the operation data at the occurrence of anomaly. Contents of display Indoor unit No. Error code Number and data item 2. When there is no anomaly: “No anomaly” is displayed, ant this mode is terminated.
Note (1) When the number of connected units cannot be shown in a page, select “Next”.
If you press [RUN/STOP] button, the display returns to the TOP screen. If you touch “Back” button on the way of setting, the display returns to the last precious screen.
Note (1) When two remote controls are used to control indoor units, the check of anomaly operation data can be made on the master remote control only. (It
cannot be operated from the slave remote control.)
Anomaly operation data (Corresponding data may not be provided depending on models. Such items will not be displayed.)

Number 01 02 03 04 05 06 07 08 09 10 11 12 13 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Data Item (Operation Mode) (Set Temperature) (Return Air Temperature) (Remote Control Temperature Sensor) (Indoor Heat Exchanger Temperature Sensor / U Bend) (Indoor Heat Exchanger Temperature Sensor /Capillary) (Indoor Heat Exchanger Temperature Sensor /Gas Header) (Indoor Unit Fan Speed) (Frequency Requirements) (Response Frequency) (Pulse of Indoor Unit Expansion Value)
(Total Running Hours of The Indoor Unit) (Supply Air Temperature) (Outdoor Air Temperature) (Outdoor Heat Exchanger Temperature Sensor) (Outdoor Heat Exchanger Temperature Sensor) (Compressor Frequency) (High Pressure) (Low Pressure) (Discharge Pipe Temperature) (Comp Bottom Temperature) (Current) (Target Super Heat) (Super Heat) (Discharge Pipe Super Heat) (Protection State No. of The Compressor) (Outdoor Unit Fan Speed) (63H1 On/Off) (Defrost Control On/Off)
(Total Running Hours of The Compressor) (Pulse of The Outdoor Unit Expansion Valve EEVC) (Pulse of The Outdoor Unit Expansion Valve EEVH)

Details of compressor protection status No. 33

No.

Contents of display

Reference page

“0” Normal “1” Discharge pipe temperature protection control “2” Discharge pipe temperature anomaly “3” Current safe control of inverter primary current “4” High pressure protection control “5” High pressure anomaly “6” Low pressure protection control “7” Low pressure anomaly “8” Anti-frost prevention control “9” Current cut “11” Power transistor anomaly (Overheat)

P.45.(a).(i) P.45.(a).(ii) P.47.(f) P.45.(b).(i)P.45.(c).(i) P.45.(b).(ii) P.46.(e).(i) P.46.(e).(ii) P.47.(j) P.47.(f) P.47.(h)

“13” Spare

“14” Dewing prevention control

P.47.(k)

“15” Current safe control of inverter secondary current P.46.(f)

“16” Stop by compressor rotor lock “17” Stop by compressor startup failure

P.48.(o)

“18” Active filter anomaly

Note(1) Operation data display on the remote control.

Data is dispalyed until canceling the protection control.

In case of multiple protections controlled, only the younger No. is displayed.

Note(2) Common item. In heating mode.

During protection control by the command signal for reducing compressor

frequency from indoor unit, No. “4” is displayed.

In cooling and dehumidifying mode.

During protection control by the command signal for reducing compressor

frequency from indoor unit, No. “8” is displayed.

– 77 –

’19 · PAC-SM-309

(b) In case of RC-E5 remote control Operation data can be checked with remote control unit operation.

Press the

button.

The display change ”

”

Press the

(SET) button while ”

” is

displayed.

When only one indoor unit is connected to remote control,

”

” is displayed (blinking indication during

data loading).

Next, operation data of the indoor unit will be displayed.

Skip to step .

When plural indoor units is connected, the smallest address

number of indoor unit among all connected indoor unit is

displayed.

[Example]:

”

” (blinking 1 seconds) ”

” blinking.

Select the indoor unit number you would like to have data

displayed with the

button.

Determine the indoor unit number with the

(SET)

button.

(The indoor unit number changes from blinking indication

to continuous indication)

”

” (The address of selected indoor unit is blinking

for 2 seconds.)

Number 01 02 03 04 05 06 07 08 09 10 11 12 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

Data Item (Operation Mode) (Set Temperature) (Return Air Temperature) (Remote Control Temperature Sensor) (Indoor Heat Exchanger Temperature Sensor / U Bend) (Indoor Heat Exchanger Temperature Sensor /Capillary) (Indoor Heat Exchanger Temperature Sensor /Gas Header) (Indoor Unit Fan Speed) (Frequency Requirements) (Response Frequency) (Pulse of Indoor Unit Expansion Value)
(Total Running Hours of The Indoor Unit) (Outdoor Air Temperature) (Outdoor Heat Exchanger Temperature Sensor) (Outdoor Heat Exchanger Temperature Sensor) (Compressor Frequency) (High Pressure) (Low Pressure) (Discharge Pipe Temperature) (Compressor Bottom Temperature) (Current) (Target Super Heat) (Super Heat) (Discharge Pipe Super Heat) (Protection State No. of The Compressor) (Outdoor Unit Fan Speed) (63H1 On/Off) (Defrost Control On/Off)
(Total Running Hours of The Compressor) (Pulse of The Outdoor Unit Expansion Valve EEVC) (Pulse of The Outdoor Unit Expansion Valve EEVH)

”

” (A blinking indication appears while data loaded.)

Next, the operation data of the indoor unit is indicated.

Upon operation of the

button, the current operation data is displayed in order from data number 01.

The items displayed are in the above table.

*Depending on models, the items that do not have corresponding data are not displayed.

To display the data of a different indoor unit, press the indoor unit selection screen.

button, which allows you to go back to the

Pressing the

button will stop displaying data.

Pressing the

(RESET) button during remote control unit operation will undo your last operation and allow you

to go back to the previous screen. If two (2) remote controls are connected to one (1) inside unit, only the master control is available for trial

operation and confirmation of operation data. (The slave remote control is not available.)
Details of compressor protection status No. 33
Refer to page 77.

– 78 –

’19 · PAC-SM-309

(6) Inverter checker for diagnosis of inverter output Checking method
(a) Setup procedure of checker. 1) Power OFF (Turn off the breaker). 2) Remove the terminal cover of compressor and disconnect the wires (U, V, W) from compressor. 3) Connect the wires U (Red) , V (White) and W (Black) of checker to the terminal of disconnected wires (U, V, W) from compressor respectively.
(b) Operation for judgment. 1) Power ON after SW6-4 on outdoor inverter PCB was turned ON. 2) After 15 seconds since power has turned ON, LED start ON/OFF for 5 seconds cyclically and it repeats 10 times. 3) Check ON/OFF status of 6 LED’s on the checker. 4) Judge the PCB by ON/OFF status of 6 LED’s on the checker.

ON/OFF

If all of LED are ON/OFF

status of LED according to following pattern

Inverter PCB

Normal

If all of LED stay OFF or some of LED are ON/OFF
Anomalous

Power ON or start check operation 123

During this period, ON/OFF status of LED is repeated cyclically according to following pattern
10

15 sec. 5sec. 5sec. 5sec.
5) Be sure to turn off SW6-4 on outdoor inverter PCB, after finishing the check operation.

Inverter Checker
LED

LED ON/OFF pattern

LED1 LED2
LED3 LED4
LED5 LED6

Faston terminal

Red U

White V

Black

W

Connect to the terminal of the wires which are disconnected from compressor.

Cyclically

ON OFF

– 79 –

– 80 –

Models FDC100, 125, 140VNA-W Outdoor unit check points
Check items with the *mark when the power is ON.

Power source check:
Measure the power source L,N (It is normal if it is AC220-240V)

Noise filter check: There should be continuity. There should be no shorts between phases.

DC reactor continuity check: Max 25m

Must be conductive. When fuse is blown, replace it or check wiring.

LED2 LED1 (Red) (Green)

LED2(Red) check: 1~5 time flash (Refer to page 5253)

When the outdoor unit fan motor is abnormal. (Refer to page 122165)

(7) Outdoor unit control failure diagnosis circuit diagram

’19 · PAC-SM-309

’19 · PAC-SM-309
– 81 –

FDC100,125,140VSA-W Outdoor unit check points
Check items with the *mark when the power is ON.

Power source check: Measure the power source L1,L2,L3 (It is normal if it is AC380-415V)

Noise filter check: There should be continuity. There should be no shorts between phases.

DC reactor contiuity check:55m or less
LED1 LED2 (Green) (Red)
When the outdoor unit fan motor is anomalous. (Refer to page 122165)
LED2(Red) check: 1~5 time flash (Refer to page 5253)

– 197 –

PCA001Z854

MCCB ELCB

GN GN

Power source 1Phase 220 -240V 50Hz 220V 60Hz

TB
L RD

F (30A)

TB3

F (8A)

RD CN1

N WH YGN

TB4

(WH) WH

NOISE FILTER PCB2

TB5

TB7

TB8 TB6

TB
1 2 3
PWB7 L1 L2
CN1

TO INDOOR UNIT
POWER CABLE 1 2 SIGNAL WIRE 3

EEVC

EEVH

FM1

M

RD

BL

BR

OR

WH

WH Y

OR Y

BL

RD

WH

Y

OR

BL

RD

RD RD WH BR WH BR

WH BL

WH RD

CNW2 (OR)

CNP T12 T22 ( WH)

6 4321 6 4321 76541

CNEEV1 ( WH)

CNEEV2 ( RD)

CNFAN1 ( WH)

CT1
TB1 TB2 YGN T1

52X11

PCB1
52X15 52X3

52X14 52X1

LED1 LED2

1234
SW3
1234
SW5

123
SW7
SW1

F (2A) F (2A) F (3.15A )

CNF

CNR

CNS

CNH

( BK)

(WH)

( RD)

( BR)

CNTH

CNB

( WH)

( RD)

IPM

CM

TB7 RD U MS

TB8 WH V 3 YGN

TB9 BL W

E

CNPSL WH

WH RD

BK

Y

RD

BK

BR BR

t°

CH

20S

PSL

63H1 Tho-R1 Tho-D Tho-S Tho-A Tho-R2

Power cable, indoor-outdoor connecting wires

Model

MAX over current A

Power cable size mm2

100

125

24

5.5

140

At the connection with the duct type indoor unit.

Model

MAX over current A

Power cable size mm2

100

26

125

5.5

140

27

Power cable length m
22
Power cable length m
20

indoor-outdoor wire size x number
1.6mm x 3
indoor-outdoor wire size x number
1.6mm x 3

Earth wire size mm
1.6
Earth wire size mm
1.6

The specifications shown in the above table are for units without heaters. For units with heaters, refer to the installation instructions or the construction instructions of the indoor unit.
Switchgear of circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country. The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.

Local setting switch SW3,5,7Set up at shipment OFF

SW3-1 Defrost control change

The defrost operation interval becomes shorter by turning ON this switch. This switch should be turned ON in the area where outside temperature becomes below the freezing point.

SW3-2 Snow guard fan control

When this switch is turned ON, the outdoor unit fan will run for 30 seconds in every 10 minutes, when outdoor temperature falls to 3°C or lower and the compressor is not running when the unit is used in a very snowy country, set this switch to ON.

SW3-3,4 Trial operation

Method of trial operation
1 Trial operation can be performed by using SW3-3,4.
2 Compressor will be in the operation when SW3-3 is ON.
3 Cooling trial operation will be performed when SW3-4 is OFF, and heating trial operation when SW3-4 is ON
4 Be sure to turn OFF SW3-3 after the trial operation is finished.

SW5-2

High height difference operation control

Set this switch to ON when outdoor unit is installed at a position higher than indoor unit by 30m or more.

SW7-2 Defrost control change

Set this switch to ON when managing unit operation by remote control connected external equipment.

SW7-3 Lower noise silent mode

Upper limit of compressor speed and fan speed becomes lower in silent mode.

Meaning of marks

Item
CH CM CN CT1 EEVC EEVH F FM1 IPM LED1 LED2 L1,2 PSL SW1 SW3,5,7 TB THo-A THo-D THo-R1,R2 THo-S 20S 52X1 52X3 52X11 52X14 52X15 63H1

Description
Crankcase heater Compressor motor Connector Current sensor Expansion valve for cooling Expansion valve for heating Fuse Fan motor Intelligent power module Indication lampGREEN Indication lampRED Reactor Low pressure sensor Switch Local setting switch Terminal block Temperature sensor Outdoor air Temperature sesor Discharge pipe Temperature sensor Heat exchanger Temperature sensor Suction pipe Solenoid valve for 4-way valve Auxilliary relay Auxilliary relay Auxilliary relayfor 20S Auxilliary relayfor CH Auxilliary relay High pressure switch

Color marks
Mark Color BK Black BL Blue BR Brown GN Green OR Orange RD Red WH White Y Yellow YGN YellowGreen

(2) Outdoor units Models FDC100VNA-W, 125VNA-W, 140VNA-W

’19 · PAC-SM-309

– 198 –

PCA001Z855

Power source 3Phase 380415V 50Hz

TB
L1 RD
L2 WH L3 BL
N BK

TB1

F10A

TB6 RD

TB2

TB7 WH

TB3 TB4

NOISE FILTER PCB2
T12 TB5

TB8 TB9

BL BK

GN

YGN BK BK

MCCB ELCB

TO INDOOR UNIT
POWER CABLE 1 2 SIGNAL WIRE 3

TB

1

RD

2 3 BL
YGN

BK RD BK RD WH

EEVC

EEVH

FM1

M

RD

WH Y

CNW1 Y

CNW3 WH

BL

BR

OR

WH

OR Y

BL

RD

WH

Y

OR

L

BL

RD

WH

Y

6 4321 6 4321 76541

TB3 TB2 TB1 T11 T12

CNEEV1 WH

CNEEV2 RD

CNFAN1 WH

PCB1

52X11 52X15
52X14 52X1 CNW2 OR
CNF BK

52X2
52X6 LED1 LED2

CNR WH

CNS RD

CNH BR

1234
SW3
1234
SW5

123
SW7
SW1
CNTH WH

F2A F2A F2A

IPM

CM TB7 RD U MS TB8 WH V 3
TB9 BL W

CNB CNPSL RD WH

WH RD

BK

Y

RD

BK

BR

BR BR

t°

CH

20S

PSL

63H1 Tho-R1 Tho-D Tho-S Tho-A Tho-R2

Power cable, indoor-outdoor connecting wires

Model

MAX over current A

Power cable size mm2

100

125

15

3.5

140

At the connection with the duct type indoor unit.

Power cable length m
46

indoor-outdoor wire size x number
1.6mm x 3

Earth wire size mm
1.6

Model

MAX over current A

Power cable size mm2

Power cable length m

indoor-outdoor wire size x number

Earth wire size mm

100 17
125

140

18

3.5

40

1.6mm x 3

38

The specifications shown in the above table are for units without heaters. For units with heaters, refer to the installation instructions or the construction instructions of the indoor unit.
Switchgear of circuit breaker capacity which is calculated from MAX. over current should be chosen along the regulations in each country. The cable specifications are based on the assumption that a metal or plastic conduit is used with no more than three cables contained in a conduit and a voltage drop is 2%. For an installation falling
outside of these conditions, please follow the internal cabling regulations. Adapt it to the regulation in effect in each country.

1.6

Local setting switch SW3,5,7Set up at shipment OFF

SW3-1 Defrost control change

The defrost operation interval becomes shorter by turning ON this switch. This switch should be turned ON in the area where outside temperature becomes below the freezing point.

SW3-2 Snow guard fan control

When this switch is turned ON, the outdoor unit fan will run for 30 seconds in every 10 minutes, when outdoor temperature falls to 3°C or lower and the compressor is not running when the unit is used in a very snowy country, set this switch to ON.

SW3-3,4 Trial operation

Method of trial operation
1 Trial operation can be performed by using SW3-3,4.
2 Compressor will be in the operation when SW3-3 is ON.
3 Cooling trial operation will be performed when SW3-4 is OFF, and heating trial operation when SW3-4 is ON
4 Be sure to turn OFF SW3-3 after the trial operation is finished.

SW5-2

High height difference operation control

Set this switch to ON when outdoor unit is installed at a position higher than indoor unit by 30m or more.

SW7-2 Defrost control change

Set this switch to ON when managing unit operation by remote control connected external equipment.

SW7-3 Lower noise silent mode

Upper limit of compressor speed and fan speed becomes lower in silent mode.

Meaning of marks

Item

Description

CH CM CN EEVC EEVH F FM1 IPM L LED1 LED2 PSL SW1 SW3,5,7 TB THo-A THo-D THo-R1,R2 THo-S 20S 52X1 52X2 52X6 52X11 52X14 52X15 63H1

Crankcase heater Compressor motor Connector Expansion valve for cooling Expansion valve for heating Fuse Fan motor Intelligent power module Reactor Indication lampGREEN Indication lampRED Low pressure sensor Switch Local setting switch Terminal block Temperature sensor Outdoor air Temperature sensor Discharge pipe Temperature sensor Heat exchanger Temperature sensor Suction pipe Solenoid valve for 4-way valve Auxilliary relay Auxilliary relay Auxiliary relayfor FM1 Auxilliary relayfor 20S Auxilliary relayfor CH Auxilliary relay High pressure switch

Color marks

Mark

Color

BK Black

BL Blue

BR Brown

GN Green

OR Orange

RD Red

WH White

Y Yellow

YGN YellowGreen

Models FDC100VSA-W, 125VSA-W, 140VSA-W

’19 · PAC-SM-309

1.5 PIPING SYSTEM (1) Single type Models 100, 125, 140 Indoor unit
Gas line (ø15.88)

Outdoor unit
Check joint Muffler

Cooling cycle

Heating cycle

4-way valve

Temperature sensor (Tho-A)

Flare connecting Temperature sensor (Heat exchanger)
(Thi-R3 or Th22) Temperature sensor
(Return air) (Thi-A or Th1) Heat exchanger Temperature sensor (Heat exchanger)
(Thi-R1) Temperature sensor (Heat exchanger) (Thi-R2 or Th21)
Flare connecting
Liquid line (ø9.52)

Service valve (Flare connecting)
High pressure switch
63H1 Muffler

Check valve Temperature sensor (Tho-S)
Temperature sensor (Tho-D)

Heat exchanger
Lower pressure sensor (PSL)
Temperature sensor (Tho-R1)

Check joint

(Discharge) Compressor
(Suction)

Service valve (Flare connecting) Strainer

Strainer

Electronic expansion valve (cooling)(EEVC)
Receiver

Accumulator
Temperature sensor (Tho-R2)
Sub-cooling coil
Check joint

Strainer Strainer

Control cooling

Electronic expansion valve (heating)(EEVH)

(2) Twin type Models 100, 125, 140

Indoor unit

Diameter joint of different (50,60 only)

Gas branch pipe
( ) 50,60:ø12.7 71:ø15.88
Gas line (ø15.88)

Outdoor unit
Check joint Muffler

Cooling cycle

Heating cycle

4-way valve

Temperature sensor (Tho-A)

Flare connecting
Temperature sensor (Heat exchanger)
(Thi-R3 or Th22) Temperature sensor (Return air)
(Thi-A or Th1) Heat exchanger
Temperature sensor (Heat exchanger)
(Thi-R1) Temperature sensor (Heat exchanger) (Thi-R2 or Th21)
Flare connecting (ø6.35)

Service valve (Flare connecting)
High pressure switch
63H1 Muffler

Check valve Temperature sensor (Tho-S)
Temperature sensor (Tho-D)

Liquid line (ø9.52)

Check joint

(Discharge) Compressor
(Suction)

Heat exchanger Lower pressure sensor
(PSL)
Temperature sensor (Tho-R1)
Accumulator Temperature sensor
(Tho-R2) Sub-cooling coil

Liquid branch pipe
(ø9.52)

Service valve (Flare connecting) Strainer

Strainer

Electronic expansion valve (cooling)(EEVC)
Receiver

Check joint

Strainer Strainer

Control cooling

Electronic expansion valve (heating)(EEVH)

– 199 –

(3) Triple type Model 140
Indoor unit

Indoor unit

’19 · PAC-SM-309

Indoor unit
Flare connecting (ø6.35)

Gas branch pipe
(ø12.7)
Gas line (ø15.88)
Flare connecting Temperature sensor (Heat exchanger) (Thi-R3 or Th22) Temperature sensor (Return air) (Thi-A or Th1) Heat exchanger
Temperature sensor (Heat exchanger) (Thi-R1) Temperature sensor (Heat exchanger) (Thi-R2 or Th21)
Liquid branch pipe (ø9.52)
Liquid line (ø9.52) Diameter joint of different

Check joint Muffler

Cooling cycle

Heating cycle

4-way valve

Temperature sensor (Tho-A)

Service valve (Flare connecting)
High pressure switch
63H1 Muffler

Check valve Temperature sensor (Tho-S)
Temperature sensor (Tho-D)

Heat exchanger
Lower pressure sensor (PSL)
Temperature sensor (Tho-R1)

Check joint

(Discharge) Compressor
(Suction)

Service valve (Flare connecting) Strainer

Strainer

Electronic expansion valve (cooling)(EEVC)
Receiver

Accumulator
Temperature sensor (Tho-R2)
Sub-cooling coil
Check joint

Strainer Strainer

Control cooling

Electronic expansion valve (heating)(EEVH)

Preset point of the protective devices

Parts name

Mark

Equipped unit

Temperature sensor (for protection overloading in heating)
Temperature sensor (for frost prevention)

Thi-R (Tho-A)
Thi-R (Th2)

Indoor unit

Temperature sensor (for protection high pressure in cooling.)

Tho-R Outdoor unit

Temperature sensor (for detecting discharge pipe temp.)

Tho-D Outdoor unit

High pressure switch (for protection)

63H1 Outdoor unit

Low pressure sensor (for protection)

PSL Outdoor unit

Note (1) Values in ( ) are for the SRK models.

100, 125, 140 model
OFF 63°C OFF 16°C
ON 56°C ON 17°C
OFF 1.0°C OFF 2.5°C
ON 10°C ON 8°C
OFF 51°C ON 65°C
OFF 115°C ON 85°C
OFF 4.15MPa ON 3.15MPa OFF 0.227MPa ON 0.079MPa

– 200 –

MICRO INVERTER PACKAGED AIR-CONDITIONERS
MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.
16-5 Konan 2-chome, Minato-ku, Tokyo, 108-8215, Japan http://www.mhi- mth.co.jp/en/ Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice.
C Copyright MITSUBISHI HEAVY INDUSTRIES THERMAL SYSTEMS, LTD.