Toshiba MAR - M81HTM8 - E User manual

SERVICE MANUAL
AIR CONDITIONER
HEAT PUMP MULTI SPLIT (2-PIPE)
Outdoor Units
MAR - M81HTM8 - E
MAR - M101HTM8 - E
Multi Controllers
RBM - Y1032E - E
RBM - Y1042E - E
TOSHIBA
AUGUST 1997 Page 1

Contents
1. Specifications Outdoor Unit
Multi Controller
2. Basic Permutations / Capabilities
3. Dimensional Views Outdoor Unit
Multi Controller
4. Wiring Diagrams Outdoor Unit
Multi Controller
5. Refrigeration Circuit Outdoor Unit
Multi Controller
6. Display Information and Fault Codes
7. Circuit Test Procedure
8. Calculation for Additional Gas Charge
Note : The two pipe Super Multi systems are heat pump units and can
provide heating or cooling, where both modes are required simultaneously
heating mode takes priority.
TOSHIBA
AUGUST 1997 Page 2

1. Specifications
OUTDOOR UNITS
RBM-Y1042E-E4 - Way RBM-Y1032E-E3 - WayMulti Controllers
Silky Grey (Munsell 6Y7.0/0.3)
Colour 10,000
m³/hrAir Flow Rate 2 x 150
WFan Motor Consumption 2 x Propeller Fan (two speed)
Fan Type 7.55.6kWCompressor Output Hermetically Sealed Twin Scroll
Compressor Type 18.615.6KgStd Refrigerant Weight R 22Refrigerant Type 20Outdoor Below (m) 50Outdoor Above (m)Height Difference 120mMax.. Length Equiv. 100mMax.. Length Actual 1/2Inch(sub) 5/8InchLiquid Pipe (main) 3/4Inch(sub) 1 1/8InchGas Pipe (main) -5 / -10Cooling / Heating ºCMin Temp. (ambient)66dB(A)Noise Level SPL 315308kgWeight 824Depth (mm) 1,290Width (mm) 1,490Height (mm)Dimensions 60AmpsStart Current 15.7 / 15.012.3 / 11.7(C/H) AmpsRunning Current 10.1 / 10.18.0 / 7.7(C/H) kWPower Consumption 3ph,380/415v,50HzPower Supply 25.0 (31.5)20.0 (25.0)kWHeating Capacity 25.0 (28.0)20.0 (22.4)kWCooling Capacity MAR-M101HTM8-EMAR-M81HTM8-EModel
Note: The capacity value in brackets is the maximum operating capacity
Cooling and Heating capacities are based on JIS B8615
Cooling capacity: Room Temperature 27ºC DB
19.5ºC WB
Ambient Temperature 35ºC DB
Heating capacity: Room Temperature 21ºC DB
Ambient Temperature 7ºC DB
6ºC WB
Usable outdoor temperature ranges
Cooling mode -5ºC to +43ºC DB
Heating mode -10ºC to +21ºC DB
Specifications are subject to change without prior notice.
TOSHIBA
AUGUST 1997 Page 3

1. Specifications
MULTI CONTROLLERS
1010mMax.. Difference between
Sub Pipes
1515mMax.. Sub Pipe Length (each)
Where two M/C are used 1515mMax.. Vertical Separation
1010mMax.. Difference between
Branches
3030mMax.. Branch Length 2320kgWeight
520450Depth (mm)
590590Width (mm) 260260Height (mm)Dimensions 3/8 x 43/8 x 3InchBranch Pipes (Liquid) 3/4 x 43/4 x 3InchBranch Pipes (Gas) 5/85/8InchLiquid Pipe (Inlet) 1 1/81 1/8InchGas Pipe (Inlet) 43Number of Branches RBM-Y1042E-ERBM-Y1032E-EModel
Specifications are subject to change without prior notice.
Pipe Size Conversion Chart
1.1/817/83/45/81/23/81/4inch 28.625.422.41915.912.79.56.4mm
TOSHIBA
AUGUST 1997 Page 4

2. Basic Permutations of Indoor to Outdoor Units
The indoor units are given a code number according to their capacity rank - see below
10RAV1253/460/1/2/3 8RAV1003/360/1/2/3 6RAV713/260/1/2/3 5RAV202/34RAV453/160/1/2/3 3RAV132/133 2RAV103 Code NumberModel Number
Multiple indoor units may be connected to one outdoor unit, providing the total indoor code does not
exceed the outdoor unit code number. The outdoor unit codes are listed below
2738MAR-M101HTM8-E 2138MAR-M81HTM8-E Max. CodeMin CodeMax.. No. Indoor UnitsModel
When connecting up to four single indoor units only one multi controller is required, if more single
indoor units are needed then two multi controllers must be used. When connecting a twin indoor
arrangement to one multi controller branch the capacity code will be the sum of both indoor unit
codes.
Example :
24Total 105TwinRAV202KH(W) 55SingleRAV202KH(W) 63TwinRAV133TUH 33SingleRAV133TUH Total Capacity CodeIndoor Capacity CodeArrangementModel No.
The total capacity codes for the example above are within the maximum permitted for a 10hp
(MAR-F101HTM8-E)outdoor unit therefore the use of a twin arrangement is acceptable.
NOTE : The maximum duty from the system cannot exceed the maximum capacity of the outdoor
unit, it is possible to use indoor uits with a total capacity of 135% of the outdoor unit capacity.
TOSHIBA
AUGUST 1997 Page 5

CONSTRUCTION VIEWS
MAR-M81HTM8E-E
MAR-M101FHTM8E-E
790 mm
824 mm
375 mm
750 mm
120 mm
65 mm
650 mm
1100 mm
1290 mm
610 mm
1182 mm
98 mm
90 mm
130 mm
160 mm
135 mm
L G
TOSHIBA
AUGUST 1997 Page 6

DIMENSIONAL DRAWINGS
RBM-Y1032E-E
300 mm
15 mm
50 mm
170 mm
Slit for hanging bolt
Oval holefor
hanging bolt
90 mm
170 mm
90 mm 490 mm
50 mm
80 mm
55 mm
85 mm
90 mm
90 mm 90 mm
90 mm
Electric Parts Box
Wiring Entrance
Refrigerant piping joint (Flare)
Liquid Side Ø 9.5
Refrigerant piping joint (Flare)
Gas Side Ø 19
60 mm
Wiring Entrance Ø 36
80 mm
100 mm
125 mm
Refrigerant piping joint (Flare)
Liquid Side Ø 15.9
Refrigerant piping joint (Brazed)
Suction Gas Side Ø 28.6
Refrigerant piping joint (Flare)
Discharge Gas Side Ø 19
100 mm
or more
500 mm
or more
500 mm
or more
500 mm
or more
450 x 450
Inspection opening
Note. Make an inspection opening at
the specified place. It is indispensable
for servicing.
560 mm
15 mm
590 mm
450 mm
250 mm
205 mm
TOSHIBA
AUGUST 1997 Page 7

DIMENSIONAL DRAWINGS
RBM-Y1042E-E
370 mm
15 mm
50 mm
170 mm
Slit for hanging bolt
Oval holefor
hanging bolt
90 mm
170 mm
90 mm 490 mm
50 mm
80 mm
55 mm
85 mm
90 mm
90 mm 90 mm
90 mm
Electric Parts Box
Wiring Entrance
Refrigerant piping joint (Flare)
Liquid Side Ø 9.5
Refrigerant piping joint (Flare)
Gas Side Ø 19
60 mm Wiring Entrance Ø 36
80 mm
190 mm
125 mm
Refrigerant piping joint (Flare)
Liquid Side Ø 15.9
Refrigerant piping joint (Brazed)
Suction Gas Side Ø 28.6
Refrigerant piping joint (Flare)
Discharge Gas Side Ø 19
100 mm
or more
500 mm
or more
500 mm
or more
500 mm
or more
450 x 450
Inspection opening
Note. Make an inspection opening at
the specified place. It is indispensable
for servicing.
560 mm
90 mm
90 mm
590 mm
520 mm
250 mm
205 mm
TOSHIBA
AUGUST 1997 Page 8

4. Schematic Wiring Diagrams
Outdoor Unit
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 1 2 3 4 5 6 7
1 2 3 1 2 3 1 2 3
1 2 3
1 2 3
1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 5 4 3 2 1
1
2
3
4
5
6
7
3
2
1
1
2
3
3
2
1
Pressure
Sensor
1 2 31 2 31 2 3
U V W
WVU+
-
+
-
1 2 3 4
1 2 3 4
1 2(~)
(~)
(~)
3 ℜ
Noise Filter
1 ℜ
Noise
Filter
7 8 9 10 11 12
1 2 3 4 5 6 7 8 9
1 2 3 4 5 6 7 8 9
SV1
SV2
SV3
1 2 3 4 1 2 1 2 3 4
1 2
1 2 3 4 5 6
PMV1
FM2 FM1
1 2 3
1 2
1 2 3
1 ℜ
Noise
Filter
6
5
4
3
2
1
L1 L2 L3 N
1
2
3
1
2
2
1
1
2
3
4
W
V
U
CM2
CM1
Gate Drive PCB
MCC - 1252
CN21
P01
P02
CN24 CN23 CN22 CN25
CN2
INVERTER CONTROL
PCB
MCC - 1251
CN2
CN1
CN5CN9
CN8
CN4
CD1
CN121
CN6
ThE
INTERFACE CONTROL
PCB
MCC - 1211
PJ5
P2
P1
PJ6 PJ1
WHI PJ2 BLK PJ3 BLU
ThD1 ThD2 ThS
PJ12 PJ16 PJ15 PJ7 PJ8PJ11PJ10
1 ℜ
Noise
Filter
CAPACITORS
2200λF x 2
M/C (1) M/C (2)POWER SUPPLY
50Hz 3ℜ380/415 v
Display
Switch
Display LED x 8
Diode
Clipper
Diode
Clipper
CD2
CD2
Reactor
Rectifier
Electric Starter
Contactor
52C2
Contactor
52C1
Capacitor
1λF x 3
Fuses
20A x 3
Crankcase
Heater
Inverter HP
Sw
63H1
Inverter Klixon
49C1
DOL Klixon
49C2
DOL HP Sw
63H2
Contactor
52C3
Return
Lock
Surge
Absorber
Surge
Absorber
Low Pressure
Switch 63L
RC1RC2
Tr1
Tr2
Thermal Fuse
TRS
Giant
Transistor
Smoothing Circuit
2200λF/400v x 2
47kΩ/20W x 2
1
2
3
Reversing
Valve
Fuses
2 x 7A
= 240 v ac Live (not permanent) = dc high voltage live
= Neutral (not permanent) = dc high voltage neutral
= Communication Signal = 3Ø for Inv Compressor
= Earth = dc low voltage
= L1 phase 415ac = ac low voltage
= L2 phase 415ac = ac low voltage
= L3 phase 415ac
Fuse 20A
20SF
Note :The colours used in this diagram are not
representative of those on the actual producct,
they are intended to indicate the status of each
wire.
Fan Motors
Solenoid Valves
Pulsed
Modulating
Valve
Inverter
Compressor
D.O.L.
Compressor
TOSHIBA
AUGUST 1997 Page 9

4. Schematic Wiring Diagrams
Multi Controllers
3 2 1
_
|_|
|_|
_
|_|
|_|
LD 1 LD 2
5 4 3 2 1 5 4 3 2 1 5 4 3 2 1 5 4 3 2 1 3 2 1 3 2 1 3 2 1 3 2 1 1 2 3
2
1
2
1
5
4
3
2
1
OUTDOOR
UNIT
INDOOR
UNIT D
INDOOR
UNIT C
INDOOR
UNIT B
INDOOR
UNIT A
COM
NO NC
2
1
Microswitch
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
1 2 3
Sump
Heater
Transformer
ThA ThB ThC ThD ThXPMVA PMVB PMVC PMVD
Float
Switch
PJ 10
PJ 6 PJ 7 PJ 8 PJ 9 PJ 1 PJ 2 PJ 3 PJ 4 PJ 5 PJ 16
PJ 14
PJ 13
PJ 12
Multi Controller P.C.
Board
MCC - 1210
Capacity Code
Swiches
Branch
ABranch
BBranch
CBranch
D
Display
Switch
The colours used in this
diagram are not
representative of those on
the product, they are
intended to indicate the
status of each wire.
= 240v ac Live Wiring
= Neutral Wiring
= Serial Wiring
= Earth Wiring
= ac low voltage
= ac low voltage
RBM - Y1032E - E does not have
PMVD, ThD, indoor unit D connections
or the capacity code switch for branch D.
TP 1
TP 2
TOSHIBA
AUGUST 1997 Page 10