Mitsubishi Electric CITY MULTI PURY-200M-B-BM. BSG How to use

Models PURY-200M-B-BM. BSG
PURY-250M-B-BM. BSG
Service Handbook
AIR CONDITIONERS CITY MULTI

CONTENTS
- 1 -
I Electrical Wiring Diagram
[1] Electrical Wiring Diagram ....................................................................................................... 2
II Refrigerant Circuit
[1] Refrigerant Circuit Figure........................................................................................................ 3
III Control
[1] Functions and Factory Settings of the Dipswitches ................................................................ 4
IV Test Run Mode
[1] Standard Operation Data (Reference Data) ........................................................................... 6
V Troubleshooting
[1] Check Code Lists.................................................................................................................... 8
[2] Preliminary Error Code Lists................................................................................................. 10
[3] Responding to Error Display on the Remote Controller........................................................ 11
VI LED Monitor Display on the Outdoor unit Board
[1] Table of LED Codes ............................................................................................................. 40

- 2 -
[ I Electrical Wiring Diagram ]
I Electrical Wiring Diagram
[1] Electrical Wiring Diagram
3
2
1
CH1 X01
CN20
(7P)
CN32
(3P)
CNS1
(2P)
CNS2
(3P)
TB3 TB7
10
AA
12
14 16
ShieldBB
Control board
(MAIN PKG)
+
-
~
~
~
DSA ZNR1~4
Centralized power supply
CN41
(4P)
CN40
(4P)
F1
6A
F2
6A
RSTE
R1
52C
FN1 FN3
FN2
Unit plate
Controller
box plate
E
Connecting to
the indoor unit,
remote controller
TB1
R
S
T
DS (Diode stack)
Power source
200V 3 phase
50/60Hz
1
2
3
4
5
6
7
1
2
3
4
4
5
6
7
V
V
U
U
W
W
MC
C
CNRS3
(7P)
CNRS2
(7P)
CN52C
(3P)
CNCT
(4P)
CNDC2
(3P)
CNDR2
(9P)
CN15V2
(14P)
CN15V1
(14P)
CNDR1
(9P)
CNDC1
(3P)
DCCT
Gate amp board
(G/A PKG)
IPM
INV board
Operation
Error
Charge
(INV PKG)
01 1
1
2
2
3
3
123
123
4123
POWER-BOARD
FN6
FN4
DCL
C1
+
P
N
F01
3A
LED1
LED2
CNVCC4
(2P)
CNVCC5
(2P)
1
2
1
2
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
1
2
12 12 12 1 2
3
3
4
5
1
2
3
4
5
3
2
1
3
2
1
SLEV
Abnormal output
Compressor ON/OFF output
Demand input
Night mode input
Snow sensor input
52
CNVCC3
(6P)
CNAC3
(5P)
CNLV1
(5P)
CN51
(5P)
CN3D
(3P)
CN3S
(3P)
CNVCC2
(6P)
CNAC2
(5P)
CNTH
(2P)
CNL2
(2P)
CN30V
(2P)
CNFAN
(3P)
MF
1
THHS L2 R2
12V
F01
2A
R
E
T
R
LED3
Note:SW3-10 is OFF For 200 models
ON For 250 models.
CN05
(4P)
CN03
(3P)
CN02
(8P)
CN01
(2P)
CNL
(3P)
TH4 TH3 TH6 TH5 TH7 TH1
63LS
Green
Green
Green
Blue
Blue
Blue
Blue
Blue
Yellow
Yellow
White
White
White
Red
Red Red
Red
Red
Red
Red
Red
Red
Red
Red
Red Red
Black White Red Black
E
T
63HS
CNH
(3P)
X03
SV
3
SV
6
SV
5
SV
4
X08
X07
X06
CN36
(9P)
2
3
4
5
6
7
8
9
Detection
circuit
6
5
4
3
2
1
43
5
2
7
1
321
43
32
42
86
1
121
6
5
4
3
2
1
3
2
1
3
2
1
CH2
CH3
63H
SSR
X05
X04
X02
CN33
(6P)
CN35
(3P)
CN34
(6P)
CN38
(3P)
SV
1
21
S4
SV
2
MF
5
4
3
2
1
546372814321
567894321
567894321
5678910111213144321
5678910111213144321
3213
3
2
2
1
1321
21321
CNFAN1
(5P)
Thermistor (Piping temp. detection)
Solenoid valve (Heat exchanger capacity control)
SV3~SV6
63HS
SLEV
THHS
63LS
Choke coil (Transmission)
Electronic expansion valve (Oil return)
Thermistor (Radiator plate)
DC Current Sensor (Direct Current)
Resistance of rush current prevention
Bleeder resistance
Main capacitor (smooth)
Electro-magnetic contactor (Inverter main circuit)
Motor for compressor
Motor Fan (Radiator plate)
Crank case heater (Compressor)
Four-way valve
Solenoid valve (Discharge-suction bypass)
High pressure switch
Thermistor (Discharge pipe temp. detection)
Thermistor (Liquid level detection of accumulator, lower)
Thermistor (Liquid level detection of accumulator, upper)
Thermistor (OA temp. detection)
Thermistor (Piping temp. detection)
Terminal block for power supply
Terminal block for transmission line (For centralized administration)
Terminal block for transmission line (For indoor series)
Earth terminal
Code heater (Liquid level detection of accumulator)
DCCT
52C
MF1
CH1
SV1,SV2
21S4
63H
TH1
TH3
TH4
TH5
TH6
TH7TB1
TB3
TB7
CH2,CH3
Symbol Symbol Symbol SymbolName Name Name Name
Motor Fan (Heat exchanger)
SV4SV3
High pressure sensor
L2
Low pressure sensor
R1
R2
C1
MC
ON
OFF
Factory default
Display of Relay
output 1 (Light ON)
Display of Check 1
(Blink)
Displayed contents when LD1 is lit (blink)
Operation of SW1
Contents
21S4 SV1 SV2 Always
Light ON
Error code display
Error address and the error code are displayed alternately
Example: Error address 51, Discharge temp. error (Error Code 1102)
LD1
<Display of LD1>
< Operation of SW1 (Self-diagnose switch) on Control Board and Displayed Contents on LD1>
EMF
Remarks
Flag 8 stays lit while power supply
of the microcomputer is turned on
1
56789104321
Flag 1 Flag 2 Flag 3 Flag 4 Flag 5 Flag 6 Flag 7 Flag 8
Flag 1 Flag 2 Flag 3 Flag 4 Flag 5 Flag 6 Flag 7 Flag 8
Compressor
in operation
Crank case
heater
5
4
3
2
1

- 3 -
[ II Refrigerant Circuit ]
II Refrigerant Circuit
[1] Refrigerant Circuit Figure
TH1
TH5
TH3
TH4
O/S
63HS
SP1
Comp
BV2
BV1
ST1
Solenoid valve block
SP2
Check valve block
CV1
ST6
SV1
CP1
SV2
ST5
CP2
CP3
ST3
ST4
SLEV
SA
MA
63H
TH6
HEXb
SV6
CV7
SV5
SV3
SV4
HEXf3
HEXf2
HEXf1
CV10
CV3
CV2
CV5
CV4
CV9CV8
CV6
63LS
Distributor
TH7
ACC

- 4 -
[ III Control ]
III Control
[1] Functions and Factory Settings of the Dipswitches
1. Outdoor unit
(1) Main board
Switch Function Function according to switch setting Switch setting timing
OFF ON ON OFF
SWU 1-2 Unit address setting Set to 00 or 51-100 with the dial switch
(Note 2) Before power on
SW1 For self diagnosis/
operation monitoring Refer to the LED monitor display on the outdoor unit board.
SW2
1Centralized control
switch
Without connec-
tion to the central-
ized controller
With connection to
the centralized
controller
Before power on
2Deletion of connec-
tion information Normal control Deletion Before power on
3Deletion of error his-
tory SW
Storage of IC/OC
error history
Deletion of IC/OC
error history Anytime after power on
4Refrigerant amount
adjustment Normal control Refrigerantamount adjustment mode
Disabled after 2
hours since the
compressor started.
Anytime after pow-
er on
5 - - - *Set the switch to OFF
6
OA sensor failure/
Liquid level over flow
abnormality enabled
Failure enabled Failure disabled Anytime after power on
7 Forced defrost Normal control Forced defrost
starts
10 minutes after
compressor startup
Anytime after
power on
8 Defrost timer setting 50 minutes 90 minutes Anytime after power on
(Except during defrost operation)
9- - - -
10 - - - *Set the switch to OFF
SW3
1SW 3-2 enabled/dis-
abled SW3-2 disabled SW3-2 enabled Anytime after power on
2Test run mode: ON/
OFF Stops all ICs Sends a test-run signal to all ICs
After power on and when SW3-1 is
on.
3
Defrost start temperature -6°C [21°F] -3°C [27°F] Anytime after power on
4
Defrost end temperature 8°C [46°F] 15°C [59°F] Anytime after power on (Except dur-
ing defrost operation)
5- - - -
6 Pump down operation Normal control Pump down opera-
tion
After power on and when the com-
pressor stops
7
Target condensing
temperature on the
heating mode Tcm
49°C [120°F] 53°C [127°F] Anytime after power on
8Harmonic action
device connection Not connected Connected Before power on
9 - - - *Set the switch to OFF
10 Unit model selection Model 200 Model 250 Before power on
SW4
1- - - -
2- - - -
3- - - -
4 - - - *Set the switch to OFF
Note 1: SWU 1-2 is set to 00 and SWU 3-10 is set in every model, and other SWUs are set to OFF at factory shipment.
Note 2: When the outdoor unit address is set to 100, set the address setting switch to any one of 01-50.

- 5 -
[ III Control ]
(2) INV board
Switch Function Function according to switch setting Switch setting timing
OFF ON ON OFF
SW1
1IDC sensor failure con-
dition switching
• 20A or over just
before starting
• 10A or less after
5 seconds from
starting
• 20A or over just be-
fore starting
(10A or less after 5
seconds from start-
ing is disabled)
Anytime after power on
2- - - - -
3- - - - -
4 Serial communication Communicated
No communication Anytime after power on
Note 1: At factory default, all switches are set to OFF.

- 6 -
[ IV Test Run Mode ]
IV Test Run Mode
[1] Standard Operation Data (Reference Data)
1. PURY
(1) Cooling operation
Operation
Outdoor unit model
PURY-200
CMB-104
PURY-250
CMB-104
Operating conditions
Power supply V/Hz 200/60 200/60
Ambient
tempera-
ture
Indoor DB/WB
°C
27.0/19.0 27.0/19.0
Outdoor 35.0/24.0 35.0/24.0
Indoor
unit
No. of connected
units Unit 4 4
No. of operating
units -4 4
Model - 80 71 56 22 112 80 71 22
Piping
Main pipe
m
55
Branchpipe 55555555
Total pipe length 25 25
Fan speed - Hi Hi Hi Hi Hi Hi Hi Hi
Amount of refrigerant kg 15.4 17.2
Outdoor unit
Electric current A 27.7 34.7
Voltage V 200 200
LEV opening
Indoor unit
Pulse
330 460 430 300 410 330 460 300
BC controller (1/3) 2000 - 160 - 2000 - 165 -
Oil return section 180 180
Pressure
High pressure/Low presuure
MPa
20.7/5.0 19.4/4.0
BC controller liquid/intermediate 19.6/19.6 18.3/18.3
Temp. of
each
section
Outdoor
unit
Discharge (TH1)
°C
[°F]
107 [225] 110 [230]
Hear exchanger outlet (TH5) 50 [122] 47 [117]
Accumulator inlet 7 [45] 7 [45]
Accumulator outlet 10 [50] 10 [50]
Inlet 12 [54] 12 [54]
Liquid level detection, upper
(TH4) 40 [104] 40 [104]
Liquid level detection, lower
(TH3) 35 [95] 35 [95]
Compressor shell bottom 75 [167] 70 [158]
Indoor
unit
LEV inlet 26 [79] 30 [86]
Hear exchanger outlet 15 [59] 15 [59]

- 7 -
[ IV Test Run Mode ]
(2) Heating operation
Operation
Outdoor unit model
PURY-200
CMB-104
PURY-250
CMB-104
Operating conditions
Power supply V/Hz 200/60 200/60
Ambient
tempera-
ture
Indoor DB/WB
°C
20.0/- 20.0/-
Outdoor 7.0/6.0 7.0/6.0
Indoor
unit
No. of operating
units Unit
44
44
Model - 80 71 56 22 112 80 71 22
Piping
Main pipe
m
55
Branchpipe 55555555
Total pipe length 25 25
Fan speed - Hi Hi Hi Hi Hi Hi Hi Hi
Amount of refrigerant kg 15.4 15.4
Outdoor unit
Electric current A 27.0 33.5
Voltage V 200 200
LEV opening
Indoor unit
Pulse
600 950 750 400 750 600 950 400
BC controller (1/3) - - 535 - - - 715 -
Oil return section 115 180
Pressure
High pressure/Low presuure
MPa
18.5/3.6 18.0/3.7
BC controller liquid/intermediate 17.5/14.0 17.0/14.0
Temp. of
each
section
Outdoor
unit
Discharge (TH1)
°C
[°F]
80 [176] 85 [185]
Hear exchanger outlet (TH5) -2 [28] -1 [30]
Accumulator inlet -1 [30] -1 [30]
Accumulator outlet -4 [25] -2 [28]
Inlet -1 [30] -1 [30]
Liquid level detection, upper
(TH4) 18 [64] 22 [72]
Liquid level detection, lower
(TH3) -1 [30] -1 [30]
Compressor shell bottom 45 [113] 40 [104]
Indoor
unit
LEV inlet 80 [176] 85 [185]
Hear exchanger outlet 38 [100] 40 [104]

- 8 -
[ V Troubleshooting ]
V Troubleshooting
[1] Check Code Lists
Error Code Error code definition
Searched unit
Notes
0403 Serial communication error
0900 Test run mode O
1102 Abnormal discharge air temperature O
1112 Abnormal low pressure
saturation temperature
Liquid level detection temp.
sensor (TH4) O
1113 Liquid level detection temp.
sensor (TH3) O
1301 Abnormal low pressure O
1302 Abnormal high pressure (Outdoor unit) O
1368 Abnormal high pres-
sure (BC controller)
Liquid
1370 Intermediate
1500 Excessive or insufficient refrigerant O
1501 Refrigerant shortage error O
2500 Water leakage O
2502 Drain pump failure O
2503 Drain sensor (DS) failure O
4102 Open-phase O
4103 Reverse phase/open phase O
4115 Power supply sync signal abnormality O
4116 RPM error/Motor malfunction O
4121 Harmonics action device error O
4200 INV failure Bus voltage drop O
Bus voltage detection circuit
failure O
AC input drop O
Current detection circuit failure O
OCT detection circuit failure O
Cooling fan failure O
4210 Over-current cut-off
In operation O
Within 30 seconds after the
compressor started O
4220 INV bus voltage drop O
4230 Heatsink overheat protection O
Temperature rise in the control box protection O
4240 Overload protection O
4250 IPM/Bus voltage abnormality O
4260 Cooling fan abnormality O
5101
Temperature sensor
failure
Suction air temperature
(TH21) O
Return of OA processing unit
(TH4) O
Outlet of Outdoor unit (TH1) O
5102
Suction air temperature
(TH22) O
Pipes on the OA processing
unit (TH2) O
Outdoor unit
Indoor unit
BC controller
OA processing unit
Remote controller

- 9 -
[ V Troubleshooting ]
5103
Temperature sensor
failure
Indoor gas side pipe (TH23) O
Pipes on the OA processing
unit (gas side) (TH3) O
Outdoor liquid level detection
(TH3) O
5104 OA processing unit (TH1) O
Liquid level detection (TH4) O
5105 Piping (TH5) O
5106 OA temperature (TH6) O
5107 Piping (TH7) O
5110 Radiator plate (THHS) O
5111
Temperature sensor
(BC controller)
Liquid inlet of BC controller
(TH11) O
5112 Bypass outlet (TH12) O
5113
Heat exchanger outlet of liquid
level detection (TH13: Type
B1 only)
O
5114
Heat exchanger inlet of liquid
level detection (TH14: Type
B1 only)
O
5115 Bypass inlet (TH15) O
5116 Intermediate (TH16) O
5201 Low pressure sensor failure (Outdoor unit) O
5301 IDC sensor/circuit failure O
6600 Address overlaps O O O O
6602 Transmission processor hardware error O O O O
6603 Transmission circuit bus-busy O O O O
6606 Communication error with the transmission processor O O O O
6607 No ACK O O O
6608 No response O O O
6810 UR communication error (UR: unit remote controller) O O O
7100 Total capacity error O
7101 Capacity code error O
7102 Error in the number of connected units O
7105 Address setting error O
7106 Attribute setting error O
7107 Branch port setting error O
7111 Remote controller sensor failure O O
7130 Incompatible units O
Error Code Error code definition
Searched unit
Notes
Outdoor unit
Indoor unit
BC controller
OA processing unit
Remote controller