Mitsubishi Heavy Industries SRR25ZM-S User manual

TECHNICAL MANUAL
-ANUAL.Ogs324
INVERTER CEILING CONCEALED TYPE
RESIDENTIAL AIR
- CONDITIONERS
3PLITSYSTEMAIRTOAIRHEATPUMPTYPE
322:-3
322:-3
TECHNICAL MANUAL
updated April 10, 2017

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1
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'15 • SR-T-185
gs32+4
CONTENTS
1. SPECIFICATIONS ........................................................................................ 3
(2) Outdoor units ....................................................................................... 6
..................................................... 17
2EMOTECONTROL ..................................................................................... 7
......................................................................... 5
(1) Indoor units 
2. EXTERIOR DIMENSIONS
3. ELECTRICAL WIRING .............................................................................. 10
(1) Indoor units .......................................................................................... 10
4. NOISE LEVEL ............................................................................................ 12
5. CHARACTERISTICS OF FAN ................................................................... 16
(2) Outdoor units ....................................................................................... 11
7. RANGE OF USAGE & LIMITATIONS
................................................................................... 19
8. CAPACITY TABLES
6. PIPING SYSTEM ...................................................................................... 16
.................................................................................. 20
9. APPLICATION DATA
10. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ............... 32
3ILENTMODE
............................... 33
/PERATIONCONTROLFUNCTIONBYWIRELESSREMOTECONTROL
4IMEROPERATION
3ELECTIONOFTHEANNUALCOOLINGFUNCTION .............................................. 34
)NSTALLINGTWOAIRCONDITIONERSINTHESAMEROOM
......................................................................... 33!UTORESTARTFUNCTION
5NIT/./&&BUTTON ........................................................................... 33
....................... 32
)NSTALLATIONOFINDOORUNIT ...................................................................... 20
)NSTALLATIONOFOUTDOORUNIT .................................................................. 24
%CONOMYOPERATION .............................................................................. 34
(IGHPOWEROPERATION ........................................................................... 34


.IGHTSETBACK 
/UTLINEOFHEATINGOPERATION 
/UTLINEOFDRYDEHUMIDIFYINGOPRATION .............................................. 37
/UTLINEOFCOOLINGOPERATION ............................................................... 37
/UTLINEOFAUTOMATICOPERATION ........................................................... 38
0ROTECTIVECONTROLFUNCTION ................................................................... 38
)TEMSTOCHECKBEFORETROUBLESHOOTING ................................................. 44
............................................................................... 44
#AUTIONS ............................................................................................. 44
11. MAINTENANCE DATA

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(10) How to make sure of wireless remote control ...................................... 61
(12) Outdoor unit inspection points .............................................................. 62
(11) Inspection procedure for blown fuse on the indoor and outdoor PCB .... 61
(8)
Phenomenon observed after shortcircuit, wire breakage on sensor ......... 59
(9) Checking the indoor electrical equipment ........................................... 59
■How to read the model name
Example: SRR 25 Z
Series code
Inverter type
Product capacity (Cooling capacity : 2.5kW)
Model name SRR : Ceiling concealed type
SRC : Outdoor unit
M-S
........................................................................................... 64
12. OPTION PARTS
...................................................................... 87
13. TECHNICAL INFORMATION
............................................................................ 64
..................................................................... 78
(1) Wired remote control
(2) Interface kit (SC-BIKN-E)
(3) Superlink E board (SC-ADNA-E) .......................................................... 82
(5) Remote sensor kit (SC-THB-E3) .......................................................... 85
(4) Bottom air inlet kit
(6) Service mode (Trouble mode access function) ................................... 47
(7) Inspection procedures corresponding to detail of trouble .................... 55
..................... 45
(4) Troubleshooting procedure (If the air-conditioner runs)
(5) Self-diagnosis table ............................................................................. 46
................................................................................ 84
(3) Troubleshooting procedure (If the air-conditioner does not run at all)
........ 44

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'15 • SR-T-185
1. SPECIFICATIONS
Model SRR25ZM-S
Model
Item
SRR25ZM-S
Indoor unit SRR25ZM-S Outdoor unit SRC25ZMX-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation data
Nominal cooling capacity (range) kW 2.5 ( 1.0 (Min.) - 3.3 (Max.))
Nominal heating capacity (range) kW 3.4 ( 1.4 (Min.) - 4.8 (Max.))
Power consumption Cooling
kW
0.570 ( 0.21 - 0.86 )
Heating 0.750 ( 0.26 - 1.32 )
Max power consumption 1.65
Running current Cooling
A
3.0 / 2.9 / 2.8 (220/ 230/ 240 V)
Heating 3.9 / 3.7 / 3.6 (220/ 230/ 240 V)
Inrush current, max current 3.9 / 3.7 / 3.6 (220/ 230/ 240 V), MAX 8
Power factor Cooling %85
Heating 88
EER 4.39
COP 4.53
Sound power level Cooling
dB(A)
56 60
Heating 59 60
Sound pressure level ①Cooling Hi: 37 Me: 33 Lo: 30 ULo: 24 47
Heating Hi: 40 Me: 37 Lo: 34 ULo: 28 47
Sound pressure level ②Cooling Hi: 31 Me: 28 Lo: 26 ULo: 21 47
Heating Hi: 33 Me: 30 Lo: 28 ULo: 23 47
Sound pressure level ③Cooling Hi: 39 Me: 35 Lo: 32 ULo: 25 47
Heating Hi: 44 Me: 41 Lo: 38 ULo: 31 47
Silent mode sound pressure level — Cooling:41 / Heating:42
Exterior dimensions (Height x Width x Depth) mm 200 x 750 x 500 595 x 780(+62) x 290
Exterior appearance ( Munsell color ) — Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 20.5 35
Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1
Compressor motor (Starting method) kW — 0.75 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.35 ( DIAMOND FREEZE MA68 )
Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 in outdoor unit (incl. the amount for the piping of 15m )
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Centrifugal fan x 2 Propeller fan x 1
Fan motor (Starting method) W 51 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 9.5 Me: 8.0 Lo: 6.5 ULo: 4.5 29.5
Heating Hi: 10.0 Me: 9.0 Lo: 8.0 ULo: 6.0 27.0
Available external static pressure Pa 35 (Initial static pressure with air filter:5Pa) 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net x 1 —
Shock & vibration absorber Cushion rubber (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, ECONO: Green
Safety equipments
Compressor overheat protection, Overcurrent protection, Drain error protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
Installation
data
Refrigerant piping size (O.D) mm Liquid line: φ6.35 ( 1/4" ) Gas line: φ9.52 ( 3/8" )
Connecting method Flare connection Flare connection
Attached length of piping m — —
Insulation for piping Necessary (Both sides), independent
Refrigerant line (one way) length m Max. 15
Vertical height diff. between O.U. and I.U. m Max. 10 (Outdoor unit is higher) / Max. 10 (Outdoor unit is lower)
Drain hose Hose connectable ( VP 25 ) Holes φ20 x 2 pcs
Drain pump, max lift height mm Built-in, MAX600 —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 3.1 / 2.9 / 2.8 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit, Joint for drain piping
Option parts Wired remote control, Interface kit ( SC-BIKN-E ), Bottom air inlet kit
Note (1) The data are measured at the following conditions.
Item
Operation
Indoor air temperature Outdoor air temperature
Standards Note
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Non-duct
(with air fillter)
Heating 20˚C — 7˚C 6˚C
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber. During operation these
values are somewhat higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
The pipe length is 5m.
RWA000Z263
① ②
③
External static
pressure
for ②,③
：10Pa
(5) Mike positions of measureing sound pressure
level of indoor unit is shown below.

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Model SRR35ZM-S
Model
Item
SRR35ZM-S
Indoor unit SRR35ZM-S Outdoor unit SRC35ZMX-S
Power source 1 Phase, 220 - 240V, 50Hz
Operation data
Nominal cooling capacity (range) kW 3.5 ( 1.0 (Min.) - 3.9 (Max.))
Nominal heating capacity (range) kW 4.2 ( 1.5 (Min.) - 5.2 (Max.))
Power consumption Cooling
kW
0.980 ( 0.21 - 1.20 )
Heating 1.030 ( 0.260 - 1.47 )
Max power consumption 1.65
Running current Cooling
A
4.7 / 4.5 / 4.3 (220/ 230/ 240 V)
Heating 5.0 / 4.8 / 4.6 (220/ 230/ 240 V)
Inrush current, max current 5.0 / 4.8 / 4.6 (220/ 230/ 240 V), MAX 8
Power factor Cooling %94
Heating 93
EER 3.57
COP 4.08
Sound power level Cooling
dB(A)
57 62
Heating 60 62
Sound pressure level ①Cooling Hi: 38 Me: 34 Lo: 31 ULo: 25 50
Heating Hi: 42 Me: 38 Lo: 35 ULo: 29 50
Sound pressure level ②Cooling Hi: 33 Me: 30 Lo: 27 ULo: 22 50
Heating Hi: 34 Me: 32 Lo: 29 ULo: 24 50
Sound pressure level ③Cooling Hi: 40 Me: 37 Lo: 33 ULo: 27 50
Heating Hi: 45 Me: 42 Lo: 39 ULo: 33 50
Silent mode sound pressure level — Cooling:45 / Heating:43
Exterior dimensions (Height x Width x Depth) mm 200 x 750 x 500 595 x 780(+62) x 290
Exterior appearance ( Munsell color ) — Stucco white
( 4.2Y 7.5/1.1 ) near equivalent
Net weight kg 20.5 35
Compressor type & Q'ty — RM-B5077MDE1( Rotary type ) x 1
Compressor motor (Starting method) kW — 0.90 ( Inverter driven )
Refrigerant oil (Amount, type) — 0.35 ( DIAMOND FREEZE MA68 )
Refrigerant (Type, amount, pre-charge length) kg R410A 1.2 in outdoor unit (incl. the amount for the piping of 15m )
Heat exchanger Louver fins & inner grooved tubing M fins & inner grooved tubing
Refrigerant control Capillary tubes + Electronic expansion valve
Fan type & Q'ty Centrifugal fan x 2 Propeller fan x 1
Fan motor (Starting method) W 51 x1 (Direct drive) 24 x1 (Direct drive)
Air flow Cooling m3/min Hi: 10.0 Me: 8.5 Lo: 7.0 ULo: 5.0 32.5
Heating Hi: 10.5 Me: 9.5 Lo: 8.5 ULo: 6.5 29.5
Available external static pressure Pa 35 (Initial static pressure with air filter:5Pa) 0
Outside air intake Not possible —
Air filter, Quality / Quantity Polypropylene net x 1 —
Shock & vibration absorber Cushion rubber (for fan motor) Rubber sleeve (for fan motor & compressor)
Electric heater — —
Operation
control
Remote control Wireless remote control
Room temperature control Microcomputer thermostat
Operation display RUN: Green, TIMER: Yellow, HI POWER: Green, ECONO: Green
Safety equipments
Compressor overheat protection, Overcurrent protection, Drain error protection,
Frost protection, Serial signal error protection, Indoor fan motor error protection,
Heating overload protection( High pressure control ), Cooling overload protection
Installation
data
Refrigerant piping size (O.D) mm Liquid line: φ6.35 ( 1/4" ) Gas line: φ9.52 ( 3/8" )
Connecting method Flare connection Flare connection
Attached length of piping m — —
Insulation for piping Necessary ( Both sides ), independent
Refrigerant line (one way) length m Max. 15
Vertical height diff. between O.U. and I.U. m Max. 10 (Outdoor unit is higher) / Max. 10 (Outdoor unit is lower)
Drain hose Hose connectable ( VP 25 ) Holes φ20 x 2 pcs
Drain pump, max lift height mm Built-in, MAX600 —
Recommended breaker size A 16
L.R.A. (Locked rotor ampere) A 4.6 / 4.4 / 4.2 (220/ 230/ 240 V)
Interconnecting wires Size x Core number 1.5mm2x 4 cores (Including earth cable) / Terminal block (Screw fixing type)
IP number IPX0 IPX4
Standard accessories Mounting kit, Joint for drain piping
Option parts Wired remote control, Interface kit ( SC-BIKN-E ), Bottom air inlet kit
Note (1) The data are measured at the following conditions.
(2) This air-conditioner is manufactured and tested in conformity with the ISO.
(3) Sound level indicates the value in an anechoic chamber. During operation these values
are somewhat higher due to ambient conditions.
(4) Select the breaker size according to the own national standard.
The pipe length is 5m.
RWA000Z263
(5) Mike positions of measureing sound pressure
level of indoor unit is shown below.
① ②
③
External static
pressure
for ②,③
：10Pa
Item
Operation
Indoor air temperature Outdoor air temperature
Standards Note
DB WB DB WB
Cooling 27˚C 19˚C 35˚C 24˚C ISO5151-T1 Non-duct
(with air fillter)
Heating 20˚C — 7˚C 6˚C

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2. EXTERIOR DIMENSIONS
(1) Indoor units
Models SRR25ZM-S, 35ZM-S
RJJ000Z001
750
790（Suspension bolts pitch）
45722 21
500
380
168
105
200
30
326
413
55
660（Outlet dimension）
59
58
165
120
37
99 35
65 65
2020
370
（Suspension bolts pitch）
（Outlet dimension）
600 or less
（Max. drain lift）
50
235〜265
□120 19
660（Inlet dimension）
160 21
65 65
19
（Inlet dimension）
Air Inlet
16
60 24
167
29.57.5
28
68.7
85
101
30
Control box
suspension bolt
Hanger plate for
Air outlet
Connector
（Accessory）
（Installed on site）
FInspection hole （450X450）,（320X770）
AGas piping
BLiquid piping
C1 Drain piping
DHole for wiring
ESuspension bolts （M10）
Symbol Content
φ6.35（1／4"）（Flare）
φ9.52（3／8"）（Flare）
Drain piping
C2 （Gravity drainage）
VP25（I.D.25 , O.D.32）
（Used with attached connector）
VP25（I.D.25 , O.D.32）
（Used with attached connector）
φ25 x 2
Unit:mm
Wired-remote control
（Option）
Wireless remote control
Remote control signal receiver
Remote control
signal receiver
（Cord length 1.8m）
Notes（1）The model name label is attached
on the lid of the control box.
（2）It takes the interface kit（SC-BIKN-E）
to connect the wired remote control.
100
450
450
750
200100
750
150 or more
770
or more
or more
100 or more
1000
1000
150 or more
320
Obstacle
View from top side of the unit
Obstacle
Obstacle
Rear-intake
Ceiling-return type
Space for installation and service
F
E
C
2
D
A
C
1
B

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'15 • SR-T-185
(2) Outdoor units
Models SRC25ZMX-S, 35ZMX-S
( )
φ 9.52（3／8"）（Flare）
Content
CPipe／cable draw-out hole
EAnchor bolt hole
Drain discharge hole
Symbol
B
AService valve connection（gas side）
M10×4places
φ 20×2places
Service valve connection（liquid side）φ
6.35（1／4"）（Flare）
D
390.6
D
63.4
290
69.4
E
50.6
12
24.3
312.5
351.6
14.8
17.9
61.9
158.4
510
780
390.6
111.6
390.6
595
15.8
97.7 42.5
B
138.4 33.5
C
40°
40°
A
Terminal block L2
L3
L4
L1
100
100
250
Open
Ｉ ＩＩ
Open
250
80
280
ＩＩＩ
280
Open
80
75
Examples of
Dimensions
installation
ＩＶ
180
Open
80
Open
Notes
（1）It must not be surrounded by walls on the four sides.
（2）The unit must be fixed with anchor bolts. An anchor bolt must not
protrude more than 15mm.
（3）Where the unit is subject to strong winds, lay it in such
a direction that the blower outlet faces perpendicularly
to the dominant wind direction.
（4）Leave 1m or more space above the unit.
（5）A wall in front of the blower outlet must not exceed the units height.
（6）The model name label is attached on the lower right corner of the front panel.
Minimum installation space
Unit:mm
L2
Intake
Outlet
Intake L3
L1
Service
space
L4
RCV000Z020

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(3) Remote control
Unit : mm
60 26
167
(a) Wireless remote control

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(b) Wired remote control (option parts)
Interface kit (SC-BIKN-E) is required to use the wired remote control.
(i) Model RC-E5
PJZ000Z295
TEMP ON/OFF
48
□120
L C D
Wall surface
Wiring
Electrical box
（Not included）
19
Wiring specifications
Exposed mounting
23
46
11.5 11
Remote
control
outline
120
45
83.5
42
120
Remote control installation dimensions
Wiring oulet
Installation hole
12×7 Slot hole
9.5×5 Slot hole （4places）
（1）Installation screw for remote control
M4 Screw (2 pieces)
44
(1) If the prolongation is over 100m, change to the size below.
But, wiring in the remote control case should be under 0.5mm2. Change the wire size outside of
the case according to wire connecting. Waterproof treatment is necessary at the wire connecting
section. Be careful about contact failure.
Length Wiring thickness
100 to 200m 0.5mm2×2 cores
0.75mm2×2 cores
1.25mm2×2 cores
2.0mm2×2 cores
Under 300m
Under 400m
Under 600m
Upper part
Lower part
Lower case
Sheath
Upper cace
Board
Wiring
Upper
Lower
X Y
Sheath
Upper cace
Board
Wiring
Upper
Lower
YX
Tighten the screws after
cutting off the thin part of
screw mounting part.
Embedded mounting
Pearl WhiteExterior appearance
(Munsell color) (N8.5) near equivalent
The peeling-off length of sheath
The peeling-off length
of sheath
In case of pulling out from
upper left
In case of pulling out
from upper left
In case of pulling out
from upper left
X wiring : 170mm
Y wiring : 190mm
Pulling out from center
X wiring : 215mm
Y wiring : 195mm
Pulling out from upper left
In case of pulling out from center
In case of pulling out
from center
In case of pulling out
from center
Wiring outlet
Cut off the upper thin part of remote control lower case with a nipper or knife,
and grind burrs with a file etc.
0.3mm2×2 cores.
X, Y Terminal block
Attach M3 screw
with washer
Unit:mm

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'15 • SR-T-185
Installation space
R/C cable：0.3mm2 × 2-core
A
dapted to RoHSdirective
Exterior appearance
(Munsell color)
Pearl White
(N8.5) near equivalent
-
A
PJZ000Z297
(ii) Model RC-EX1A