Mitsubishi Electric PUMY-P100VHMB Page 68 Service Manual Download | Manualshive

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68

9-9. TEST POINT DIAGRAM
Outdoor multi controller board

PUMY-P100VHMB(-BS) PUMY-P100VHMBR1(-BS)  PUMY-P100VHMBR2(-BS)
PUMY-P125VHMB(-BS) PUMY-P125VHMBR1(-BS)  PUMY-P125VHMBR2(-BS)
PUMY-P140VHMB(-BS) PUMY-P140VHMBR1(-BS)  PUMY-P140VHMBR2(-BS)
PUMY-P100YHMB(-BS) PUMY-P100YHMBR1(-BS)  PUMY-P100YHMBR2(-BS)
PUMY-P125YHMB(-BS) PUMY-P125YHMBR1(-BS)  PUMY-P125YHMBR2(-BS)
PUMY-P140YHMB(-BS) PUMY-P140YHMBR1(-BS)  PUMY-P140YHMBR2(-BS)

SW2

Pump down

21S4

Four-way valve

SV1

Bypass valve

CNAC

Power supply for multi
controller board
220-240VAC

CNS1

Indoor/ outdoor unit
connecting wire

CNS2

Transmission wire of
centralized control

CN40,CN41

Centralized control power
supply/ For storing
jumper connector selection

CN102

Connect to the M-P.B
(Transmission power board)

CN51

External signal
output

SW4

Model select

SW7

Forced defrost

SW3

Test run

CN2

Connect to the outdoor
power circuit board

1

-

5

:

Power circuit board

→

Transmitting signal to
the multi controller board
(0-5V DC)

2

-

5

: Zero cross signal

(0-5V DC)

3

-

4

: Not used

6

-

5

: 16V DC

7

-

5

: 16V DC

CNDC

DC310V–340V (Y)
DC280V–DC350V (V)
(

1

(+)–

3

(-))

V

CC

(TEST POINT

2

)

(Voltage between pins of
C82A) : DC15V
(Same as CNF1,2

5

(+)–

4

(-))

V

SP

(Voltage between pins of
C515 and C516) :
DC0V (when stopped)
DC1–6.5V (when operated)
(Same as CNF1,2

6

(+)–

4

(-))

CNF1, 2

Connect to fan motors

1

–

4

: DC310V-340V (Y)

:

DC280V-350V

(V)

5

–

4

: DC15V

6

–

4

: DC0–6.5V

7

–

4

: DC15V (when stopped)

DC0–15V pulse
(when operated)

V

DC

(TEST POINT

1

)

(Voltage between pins of C510)
: DC310V-DC340V (Y)
: DC280V-DC350V (V)
(Same as CNF1,2

1

(+)–

4

(-))

V

FG

(TEST POINT

4

)

(Voltage between left pins of
PC511 and PC512, pin1 and
pin2) :
(Same as CNF1,2

7

(+)–

4

(-))

TH4 Thermistor

<Discharge/Compressor>

TH7/TH6 Thermistor

<Outdoor/Saturation tempera-
ture of suction pressure>

63HS

High pressure sensor

63H

High pressure switch

TH3 Thermistor

<Outdoor pipe>

CN3D

Input of demand control

63L

Low pressure switch

SW1

Display selection
(Self diagnosis)

SWU2, SWU1

Address setting

SW8

Demand/Silent selection

CN3N

Input of demand control

<CAUTION> TEST POINT

1

is high voltage.

CNLVB (Only VHMB)

Connect to the outdoor
noise filter circuit board
(CN52C)

1

-

6

: DC12V

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Summary of Contents for PUMY-P100VHMB

Page 1: ...100YHMBR1 PUMY P100YHMBR2 PUMY P125YHMB PUMY P125YHMBR1 PUMY P125YHMBR2 PUMY P140YHMB PUMY P140YHMBR1 PUMY P140YHMBR2 PUMY P100YHMB BS PUMY P100YHMBR1 BS PUMY P100YHMBR2 BS PUMY P125YHMB BS PUMY P125YHMBR1 BS PUMY P125YHMBR2 BS PUMY P140YHMB BS PUMY P140YHMBR1 BS PUMY P140YHMBR2 BS HFC utilized R410A September 2010 NOTE This service manual describes technical data of outdoor unit As for indoor uni...

Page 2: ... P140YHMBR2 BS THERMISTOR has been changed Discharge thermistor Compressor thermistor COMPRESSOR has been changed PUMY P100VHMB BS PUMY P100VHMBR1 BS PUMY P125VHMB BS PUMY P125VHMBR1 BS PUMY P140VHMB BS PUMY P140VHMBR1 BS PUMY P100YHMB BS PUMY P100YHMBR1 BS PUMY P125YHMB BS PUMY P125YHMBR1 BS PUMY P140YHMB BS PUMY P140YHMBR1 BS OUTDOOR CONTROLLER BOARD C B has been changed Corresponding to the add...

Page 3: ...an cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered Flare tool Electronic refrigerant charging scale Vacuum pump adaptor Size adjustment gauge Gauge manifold Torque wrench Gas leak detector Charge hose Tools for R410A Contamination inside ...

Page 4: ...install the unit in a location where the salt will be washed away by rainwater If a sunshade is installed rainwater may not clean the panel 3 To ensure that water does not collect in the base of the outdoor unit make sure that the base is level not at angle Water collecting in the base of the outdoor unit could cause rust 4 If the unit is installed in a coastal area clean the unit with water regul...

Page 5: ...17 0 22 0 24 0 27 0 36 0 Nominal dimensions inch Flare nut dimensions Outside diameter Dimension B mm R410A R22 Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Applied oil Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitrogen gas cylinder Refrigerant charging scale Vacuum gauge or thermis tor vacuum gauge and vacu...

Page 6: ...he Melans centralized management system Addresses must be set Addresses setting is not necessary MA remote controller PAR 21MAA Outdoor unit Capacity Type 15 Type 125 1 8 unit 50 130 of outdoor unit capacity 2 Type 15 Type 140 1 10 unit Indoor unit that can be connected Number of units Total system wide capacity 4HP 5HP 6HP PUMY P100VHMB BS PUMY P100VHMBR1 BS PUMY P100VHMBR2 BS PUMY P100YHMB BS PU...

Page 7: ...0YHMBR2 BS Capacity Cooling kW Heating kW 11 2 12 5 1 9 PUMY P125VHMB BS PUMY P125VHMBR1 BS PUMY P125VHMBR2 BS PUMY P125YHMB BS PUMY P125YHMBR1 BS PUMY P125YHMBR2 BS 14 0 16 0 2 4 PUMY P140VHMB BS PUMY P140VHMBR1 BS PUMY P140VHMBR2 BS PUMY P140YHMB BS PUMY P140YHMBR1 BS PUMY P140YHMBR2 BS 15 5 18 0 2 9 Compressor kW Cooling Heating capacity indicates the maximum value at operation under the follow...

Page 8: ...ce 27 CDB 19 CWB 81 FDB 66 FWB 35 CDB 95 FDB 7 5 m 24 9 16 ft 0 m 0 ft 2 Nominal cooling conditions 27 CDB 19 5 CWB 81 FDB 67 FWB 35 CDB 95 FDB 5 m 16 3 8 ft 0 m 0 ft 3 Nominal heating conditions Unit converter 20 CDB 68 FDB 7 CDB 6 CWB 45 FDB 43 FWB 7 5 m 24 9 16 ft 0 m 0 ft Nominal conditions 1 3 are subject to JIS B8615 1 Due to continuing improvement above specifications may be subject to chan...

Page 9: ...Unit converter 20 CDB 68 FDB 7 CDB 6 CWB 45 FDB 43 FWB 7 5 m 24 9 16 ft 0 m 0 ft Nominal conditions 1 3 are subject to JIS B8615 1 Due to continuing improvement above specifications may be subject to change without notice kcal h kW 860 Btu h kW 3 412 cfm m3 min 35 31 lb kg 0 4536 Above specification data is subject to rounding variation Model Power source Cooling capacity Nominal Temp range of coo...

Page 10: ...ula in 5 1 2 1 Model 25 14 6 o 2 43kW Model 50 14 6 o 4 87kW The total model capacity of indoor unit is 3 2 o 2 6 3 o 2 19 0 Therefore the capacity of PKFY P25VBM E and PLFY P50VLMD E will be calculated as follows by using the formula in 5 1 2 1 Model 25 16 33 o 2 75kW Model 50 16 33 o 5 41kW 2 8 16 8 5 6 16 8 6 3 19 0 3 2 19 0 2 Sample calculation 1System assembled from indoor and outdoor unit in...

Page 11: ... 4 10 5 79 7 90 8 89 2 00 2 50 9 2 11 6 8 8 11 1 8 5 10 6 80 8 00 9 00 2 04 2 54 9 4 11 7 9 0 11 2 8 6 10 8 81 8 10 9 10 2 07 2 57 9 6 11 9 9 2 11 4 8 8 10 9 82 8 20 9 20 2 10 2 60 9 7 12 0 9 3 11 5 8 9 11 0 83 8 30 9 30 2 14 2 64 9 9 12 2 9 5 11 7 9 1 11 2 84 8 40 9 40 2 17 2 67 10 0 12 3 9 6 11 8 9 2 11 3 85 8 50 9 50 2 21 2 70 10 2 12 5 9 8 11 9 9 4 11 4 86 8 60 9 60 2 24 2 74 10 4 12 7 9 9 12 ...

Page 12: ... 125 11 47 12 66 3 40 3 51 15 7 16 2 15 0 15 5 14 4 14 9 126 11 49 12 67 3 40 3 50 15 7 16 2 15 0 15 5 14 4 14 8 127 11 51 12 68 3 40 3 49 15 7 16 1 15 0 15 4 14 4 14 8 128 11 53 12 69 3 41 3 48 15 8 16 1 15 1 15 4 14 4 14 7 129 11 55 12 70 3 41 3 47 15 8 16 0 15 1 15 3 14 4 14 7 130 11 57 12 71 3 42 3 45 15 8 15 9 15 1 15 3 14 5 14 6 131 11 59 12 73 3 42 3 44 15 8 15 9 15 1 15 2 14 5 14 6 132 11 ...

Page 13: ...1 2 9 8 10 8 9 4 10 3 2 46 10 3 11 4 9 9 10 9 9 5 10 4 2 49 10 5 11 5 10 0 11 0 9 6 10 5 2 52 10 6 11 6 10 2 11 1 9 7 10 7 2 55 10 8 11 8 10 3 11 3 9 9 10 8 2 58 10 9 11 9 10 4 11 4 10 0 10 9 2 61 11 0 12 0 10 6 11 5 10 1 11 0 2 64 11 2 12 2 10 7 11 7 10 3 11 2 2 67 11 3 12 3 10 8 11 8 10 4 11 3 2 70 11 5 12 5 11 0 11 9 10 5 11 4 2 73 11 6 12 6 11 1 12 1 10 7 11 6 2 76 11 8 12 7 11 3 12 2 10 8 11 ...

Page 14: ... 1 18 3 18 3 4 33 4 31 20 0 19 9 19 1 19 0 18 3 18 2 4 33 4 30 20 0 19 8 19 1 19 0 18 3 18 2 4 33 4 28 20 0 19 8 19 1 18 9 18 3 18 1 4 33 4 27 20 0 19 7 19 2 18 9 18 4 18 1 4 34 4 26 20 0 19 7 19 2 18 8 18 4 18 0 4 34 4 25 20 0 19 6 19 2 18 7 18 4 18 0 4 34 4 23 20 1 19 5 19 2 18 7 18 4 17 9 4 34 4 22 20 1 19 5 19 2 18 6 18 4 17 9 4 35 4 21 20 1 19 4 19 2 18 6 18 4 17 8 4 35 4 20 20 1 19 4 19 2 18...

Page 15: ...0 80 12 05 3 31 3 81 15 3 17 6 14 6 16 8 14 0 16 1 109 10 90 12 17 3 35 3 85 15 5 17 8 14 8 17 0 14 2 16 3 110 11 00 12 28 3 39 3 88 15 7 17 9 15 0 17 2 14 4 16 4 111 11 10 12 39 3 43 3 92 15 9 18 1 15 2 17 3 14 5 16 6 112 11 20 12 51 3 46 3 95 16 0 18 3 15 3 17 5 14 7 16 7 113 11 30 12 63 3 50 3 99 16 2 18 4 15 5 17 6 14 8 16 9 114 11 40 12 75 3 54 4 03 16 4 18 6 15 7 17 8 15 0 17 1 115 11 50 12 ...

Page 16: ... 174 15 77 18 24 5 40 5 31 25 0 24 5 23 9 23 5 22 9 22 5 175 15 79 18 25 5 40 5 29 25 0 24 5 23 9 23 4 22 9 22 4 176 15 80 18 26 5 41 5 28 25 0 24 4 23 9 23 3 22 9 22 4 177 15 81 18 27 5 41 5 26 25 0 24 3 23 9 23 3 22 9 22 3 178 15 83 18 29 5 41 5 25 25 0 24 3 23 9 23 2 22 9 22 2 179 15 84 18 30 5 41 5 23 25 0 24 2 23 9 23 1 22 9 22 2 180 15 86 18 31 5 42 5 22 25 0 24 1 23 9 23 1 23 0 22 1 181 15 ...

Page 17: ...7 3 86 4 44 3 67 4 22 3 54 4 07 88 8 80 9 80 2 44 2 80 3 91 4 49 3 72 4 26 3 58 4 11 89 8 90 9 90 2 47 2 83 3 96 4 54 3 76 4 31 3 63 4 15 90 9 00 10 00 2 51 2 86 4 02 4 58 3 82 4 35 3 68 4 20 91 9 10 10 10 2 54 2 90 4 07 4 65 3 87 4 42 3 73 4 26 92 9 20 10 22 2 57 2 93 4 12 4 70 3 91 4 46 3 77 4 30 93 9 30 10 33 2 60 2 96 4 16 4 74 3 96 4 51 3 82 4 34 94 9 40 10 45 2 64 3 00 4 23 4 81 4 02 4 57 3 ...

Page 18: ... 130 11 57 12 71 3 38 3 43 5 41 5 50 5 15 5 22 4 96 5 03 131 11 59 12 73 3 38 3 41 5 41 5 46 5 15 5 19 4 96 5 00 132 11 61 12 74 3 38 3 40 5 41 5 45 5 15 5 18 4 96 4 99 133 11 63 12 75 3 39 3 39 5 43 5 43 5 16 5 16 4 97 4 97 134 11 65 12 76 3 39 3 38 5 43 5 42 5 16 5 15 4 97 4 96 135 11 67 12 77 3 40 3 37 5 44 5 40 5 18 5 13 4 99 4 95 136 11 69 12 78 3 40 3 36 5 44 5 38 5 18 5 12 4 99 4 93 137 11 ...

Page 19: ...4 4 58 4 03 4 35 3 89 4 20 100 10 00 11 13 2 68 2 89 4 29 4 63 4 08 4 40 3 93 4 24 101 10 10 11 24 2 72 2 92 4 36 4 68 4 14 4 44 3 99 4 29 102 10 20 11 36 2 75 2 96 4 40 4 74 4 18 4 50 4 04 4 34 103 10 30 11 47 2 79 2 99 4 47 4 79 4 24 4 55 4 10 4 39 104 10 40 11 59 2 82 3 02 4 52 4 84 4 29 4 59 4 14 4 43 105 10 50 11 70 2 86 3 05 4 58 4 89 4 35 4 64 4 20 4 48 106 10 60 11 81 2 89 3 08 4 63 4 94 4...

Page 20: ... 88 6 62 6 54 6 29 6 31 6 07 154 14 30 16 16 4 30 4 12 6 89 6 61 6 54 6 27 6 31 6 05 155 14 32 16 17 4 31 4 11 6 89 6 59 6 55 6 25 6 32 6 03 156 14 34 16 19 4 31 4 10 6 90 6 57 6 55 6 23 6 32 6 01 157 14 36 16 20 4 31 4 09 6 90 6 55 6 55 6 21 6 32 6 00 158 14 38 16 21 4 31 4 07 6 90 6 53 6 56 6 20 6 33 5 98 159 14 40 16 22 4 32 4 06 6 91 6 51 6 56 6 18 6 33 5 96 160 14 42 16 23 4 32 4 05 6 91 6 49...

Page 21: ... 63 4 95 5 43 111 11 10 12 39 3 41 3 74 5 46 5 99 5 19 5 69 5 00 5 49 112 11 20 12 51 3 45 3 77 5 52 6 03 5 25 5 74 5 06 5 53 113 11 30 12 63 3 48 3 80 5 57 6 08 5 30 5 78 5 11 5 58 114 11 40 12 75 3 52 3 84 5 63 6 15 5 36 5 85 5 17 5 63 115 11 50 12 88 3 56 3 87 5 70 6 19 5 42 5 89 5 22 5 68 116 11 60 13 00 3 60 3 91 5 76 6 26 5 48 5 95 5 28 5 74 117 11 70 13 13 3 64 3 94 5 83 6 31 5 54 6 00 5 34...

Page 22: ... 173 15 76 18 22 5 37 5 07 8 59 8 12 8 17 7 72 7 87 7 44 174 15 77 18 24 5 37 5 06 8 59 8 10 8 17 7 70 7 88 7 42 175 15 79 18 25 5 37 5 05 8 60 8 07 8 18 7 68 7 88 7 40 176 15 80 18 26 5 38 5 03 8 60 8 05 8 18 7 66 7 89 7 38 177 15 81 18 27 5 38 5 02 8 61 8 03 8 19 7 64 7 89 7 36 178 15 83 18 29 5 38 5 00 8 61 8 01 8 19 7 62 7 89 7 34 179 15 84 18 30 5 38 4 99 8 62 7 99 8 19 7 59 7 90 7 32 180 15 ...

Page 23: ...pacity Indoor D B 27 C W B 19 C Outdoor D B 35 C Indoor D B 20 C Outdoor D B 7 C W B 6 C 0 4 5 0 10 20 30 40 46 0 6 0 8 1 0 1 2 1 4 0 6 0 8 1 0 1 2 1 4 22 20 18 16 22 20 18 16 Cooling performance curve 0 6 0 4 0 8 1 0 1 2 1 4 0 4 0 6 0 8 1 0 1 2 1 4 10 15 5 0 5 10 15 20 25 15 20 25 15 Heating performance curve Cooling Capacity ratio Cooling Power consumption ratio Heating Power consumption ratio H...

Page 24: ...t Piping Length Equivalent length for type P100 125 140 length of piping to farthest indoor unit 0 3 o number of bends in the piping m Length of piping to farthest indoor unit type P100 P140 80m 5 3 3 Correction of Heating Capacity for Frost and Defrosting If heating capacity has been reduced due to frost formation or defrosting multiply the capacity by the appropriate correction factor from the f...

Page 25: ...00 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 0 0002 μbar BAND CENTER FREQUENCIES Hz NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUMY P125VHMB BS PUMY P125VHMBR1 BS PUMY P125VHMBR2 BS PUMY P125YHMB BS PUMY P125YHMBR1 BS PUMY P125YHMBR2 BS COOLING MODE HEATING 50 SPL dB 52 LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRE...

Page 26: ...r concentration control Terminal block Left For the power supply Center For the transmission line Right For concentration control Less than Over Over Over Over Handle for moving Side Air Intake Front piping cover Rear piping cover Air intake Rear Air Intake Handle for moving Handle for moving Service panel Handle for moving The diagram below shows a basic example Explanation of particular details ...

Page 27: ...on CN3S Connector Connection For Option CN3N Connector To N F Board CN52C Symbol of Board is CNLVB CNLVB Connector Connection For Option CN51 Relay X501 505 M NET P B ConnectionTerminal Ground M NET Power Circuit Board TP1 Connection Terminal L N Phase TABS T Connection Terminal DC Voltage TABP1 P2 P Connection Terminal DC Voltage Diode Bridge TABN1 N2 N N F Noise Filter Circuit Board Connection T...

Page 28: ...or LED3 Connector Connection For Option SS Connector Connection For Option CN3D Connector Connection For Option CN3S Connector Connection For Option CN3N Connector Connection For Option Connection Terminal L1 Power Supply CN51 Relay X52A Relay X501 X505 Connection Terminal Ground Connection Terminal Ground GD1 GD3 TP1 Converter Circuit Board L1 A1 IN N F Connection Terminal L1 L2 L3 Power Supply N...

Page 29: ... 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 004 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 005 A transmission wire must be connected to each refrigerant system outdoor and indoor Set addresses Outdoor unit 051 100 Indoor unit 001 050 Remote controller 101 200 PUMY has no 100ths digit switch The address automatically become 100 if it is set as 01 50 Remote co...

Page 30: ...HMBR1 BS Refrigerant Gas pipe 5 8 Refrigerant Liquid pipe 3 8 Check valve Low pressure Accumulator Thermistor Saturation temperature of suction pressure TH6 Solenoid valve SV1 Capillary tube Check valve High pressure Pressure sensor 63HS High pressure switch 63H Low pressure switch 63L Thermistor TH7 Outdoor temperature Pipe temperature Compressor thermistor TH4 Heatsink thermistor TH8 Thermistor ...

Page 31: ...e terminal block TB6 for the remote controller RC c Set the address setting switch on outdoor unit P C B as shown below 3 Group operation Multiple indoor units operated together by 1 remote controller Unit Indoor unit IC Outdoor unit OC Remote controller RC Range 001 to 050 051 to 100 101 to 150 Setting Method Use the smallest address of all the indoor unit plus 50 Indoor unit address plus 100 a S...

Page 32: ...cted to 1 indoor unit The remote controller address is the indoor unit main address plus 100 In this case it should be 101 M1M2 TB5 S 1 2 TB15 01 102 IC Main A B M1M2 TB3 S A B TB7 51 OC S M1M2 TB5 S 1 2 2 TB15 02 IC Sub RC M1M2 TB5 S 1 2 TB15 01 101 RC Main 151 IC M1M2 TB3 S A B TB7 51 OC S M1M2 TB5 S 1 2 TB15 02 IC RC Sub 102 RC Main 103 RC Sub 104 RC A B A B A B A B A B M1M2 TB5 S 1 2 TB15 01 1...

Page 33: ...cent address within the same group to the terminal block on the remote controller RC d Connect together terminals M1 M2 and terminal S on the terminal block for central control TB7 for the outdoor unit OC e DO NOT change the jumper connector CN41 on MULTI controller board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Connect the termi nal S on t...

Page 34: ...m length and overall length Never connect together the terminal blocks TB5 for transmission wires for indoor units IC that have been connected to different outdoor units OC Set all addresses to ensure that they are not overlapped M NET remote controller and MA remote controller cannot be connected with the indoor unit of the same group wiring together M1M2 S M1M2S TB7 TB3 IC 51 M1M2S TB5 RC 01 IC ...

Page 35: ...Use non polarized 2 wire b Connect terminals 1 and 2 on transmission cable terminal block TB15 for each indoor unit with the terminal block for the MA remote controller MA 3 Group operation Multiple indoor units operated together by 1 remote controller a The same as above b The same as above c In the case of using 2 remote controllers connect terminals 1 and 2 on transmission cable terminal block ...

Page 36: ...roller cable length R3 R4 R5 R6 200m 0 3 1 25 mm Longest transmission cable length The same as above MA remote controller cable length R7 R8 200m 0 3 1 25 mm M1M2 TB5 S 1 2 TB15 00 IC A B M1M2 TB3 S M1M2 TB7 00 OC S M1M2 TB5 S 1 2 TB15 00 IC A B MA MA A B RC The MA remote controller and the M NET remote controller cannot be used together with the indoor unit of the same group 3 MA remote controlle...

Page 37: ...it IC that has the most recent address within the same group to the terminal block on the remote controller RC d Connect together terminals M1 M2 and terminal S on the terminal block for central control TB7 for the outdoor unit OC e DO NOT change the jumper connector CN41 on MULTI controller board f The earth processing of S terminal for the centralized control terminal block TB7 is unnecessary Co...

Page 38: ...Remote Controller Address M1M2S TB7 IC 51 M1M2 1 2 S TB5 TB15 1 2 TB15 1 2 TB15 1 2 TB15 1 2 TB15 1 2 TB15 1 2 TB15 MA 01 IC M1M2S TB5 03 IC M1M2S TB5 02 IC M1M2S TB5 04 IC M1M2S TB5 05 IC M1M2S TB5 07 IC M1M2S TB5 06 MA MA MA OC M1M2S TB7 53 OC S Power Supply Unit S G 50A A B A B A B M1M2 M1M2 A B M1M2 S TB3 M1M2 S TB3 Longest length via outdoor unit M NET cable L1 L2 L3 L4 and L1 L2 L6 L7 500 m ...

Page 39: ...this point b Register control systems into remote controller s Never touch the on off switch of the remote controller s Refer to 9 1 2 Special Function Operation and Settings for M NET Remote Controller as for settings In MA remote controller s this registration is unnecessary 4 More than 12 hours later from power supply to the outdoor unit turn all power switch to on for the test run Perform test...

Page 40: ... 2 seconds The above steps are the same as when making group settings A Changing to the linked operation unit address display state The display shown in Figure 4 will appear when the a button on the remote control is pressed Displaying the address of the Lossnay unit and linked indoor unit In this situation the indoor unit number will be the lowest address of the group The Lossnay unit will not op...

Page 41: ...n after resting the w button again Returning to the normal mode after completing the check Simultaneously press the FILTER and k buttons on the remote controller and hold for 2 seconds to return to the normal mode 3 Clearing an address Refer to section 1 regarding the address entry and section 2 regarding checking addresses a In making group settings Turn off the remote controller The procedure is...

Page 42: ...ication receive signal error no receive signal MA commnication send signal error starting bit derection error MA commnication send error H W error MA commnication receive error Synchronous recovery error Total capacity error Capacity code error Connecting unit number error Address set error Remote controller sensor trouble 0403 1300 4100 4400 5300 5701 Trouble Remarks Detected unit Indoor Outdoor ...

Page 43: ...xchanger Locked indoor fan motor Malfunction of indoor fan motor Defective operation of stop valve Not fully open Clogged or broken pipe Locked outdoor fan motor Malfunction of outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger Decreased airflow caused by defective inspection of outside temperature thermistor It detects lower temperature than actual temperature Disconnect...

Page 44: ... and discharge temp thermistor are normal if the above mentioned detecting pressure level and temp are very different from the actual pressure and temp replace the multi controller board 1 Check the resistance of thermistor 2 According to Outdoor unit functions check the outdoor pipe temp thermistor level 3 According to Outdoor unit functions check the outer temp thermistor level 1501 Water leakag...

Page 45: ...tion outdoor unit in same refrigerant sytem stops Also indoor unit except for Fan or OFF mode unit stop 2502 is displayed on stopped unit Detection timing of forced outdoor unit stop Constantly detected during unit operation and stop Releasing of forced outdoor unit stop Reset power supply of both abnormal indoor unit and its outdoor unit in same refrigerant system Forced outdoor unit stop cannot ...

Page 46: ...oat switch detects to be in the water for 15 minutes constantly Before Forced outdoor unit stop condition is met the unit always detects above The indoor unit detecting above stops due to detecting abnormality the outdoor unit in same refrigerant system compressor is inhibited to operate The unit which stops due to detecting abnormality displays 2502 Detection timing of forced outdoor unit stop Co...

Page 47: ...ressor wiring connection Defective compressor Defective outdoor power circuit board Stop valve of outdoor unit is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units Defective input circuit of outdoor controller board Defective compressor Failure in the operation of the...

Page 48: ...in thermistor during the operation the outdoor unit stops once and restarts operation in 3 minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts Connector TH4 contact failure Check whether the connector TH4 in the multi controller board is connected or not When controller detects short open in thermistor at just before of restarting the unit stops d...

Page 49: ...r detects short open in thermistor during the operation the outdoor unit stops once and restarts operation in 3 minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts 1 Connector TH6 contact failure Check whether the connector TH6 in the multi controller board is connected or not When controller detects short open in thermistor at just before of rest...

Page 50: ...er detects short open in thermistor during the operation the outdoor unit stops once and restarts operation in 3 minutes When the detected temperature is normal at just before of restarting the outdoor unit restarts 1 Connector TH3 contact failure Check whether the connector TH3 in the multi controller board is connected or not When controller detects short open in thermistor at just before of res...

Page 51: ...multi controller board is not an actual temperature replace the multi controller board 5110 Heatsink temperature thermistor TH8 Internal thermistor of power module Y Heatsink thermistor V When controller detects short open in thermistor during the operation the outdoor unit stops once and restarts operation in 3 minutes When the detected temperature is normal at just before of restarting the outdo...

Page 52: ...When noise has occurred in the transmission signal and the signal has changed Check the transmitted wave and the noise on the transmission line 6602 Transmission processor H W error 1 shows on the transmission line though the transmission processor transmitted 0 1 When the wiring for either of the indoor unit the outdoor unit or lossnay transmission line is constructed or polarity is changed with ...

Page 53: ...er to other transmitted data by a defective repeater function which connects and intercepts the transmission of controlling system and centralized control system and it causes abnormal detection Check whether the outdoor unit terminal board for transmission line TB3 and for centralized controller TB7 are connected or not Note Address Attribute displayed on the remote controller shows the controlle...

Page 54: ...e indoor unit which memorizes the address data cancel the unnecessary address data by the manual setting function of remote controller Line diameter 1 25 A or more However they are limited to the system which sets the group between different refrigerant systems or which fresh master lossnay are connected 4 Decline of transmission line voltage and signal by a number of over connected units When the...

Page 55: ...with other refrigerant system fresh master the indoor units transmits the signal to the fresh master after the fresh master and same refrigerant system outdoor unit is turned off or turned on again in 2 minutes and detects abnormality The indoor unit detects when there is no reply ACK on transmitting from the indoor unit to the fresh master 2 Contact failure of fresh master or indoor unit transmis...

Page 56: ...e 2 Decline of transmission voltage and signal by transmission line tolerance over Check the transmission wave and noise on the transmission line Though there was a replay ACK of having received signal from the other side it is the abnormality when the response command does not return The sending side detects the abnormality continuously six times every 30 seconds Note Address Attribute displayed ...

Page 57: ...Set one remote controller to main remote controller and the other to sub remote controller Defect of the transmission and reception circuit of the remote controller Defect of the transmission and reception circuit of the indoor controller board Noise occurs on the transmission line of the remote controller All remote controllers are set as sub remote controller Defect of the transmission and recep...

Page 58: ...s The indoor unit can be connected up to 8 P100 10 P125 12 P140 units 2 Ventilation unit connecting is only 1 unit 7101 Capacity code error When the connected indoor unit models cannot be connected 7101 is displayed The indoor unit models is not possible to connect The indoor unit of 15 140 Code 3 28 is possible to connect Check the model code registration switch indoor controller board SW2 in the...

Page 59: ...ror display 1 NG flashes The remote controller s transmitting receiv ing circuit is defective The remote controller must be replaced with a new one Where the remote controller is not defective but cannot be operated Error display 2 E3 6833 or 6832 flashes Transmissionisnotpossible There might be noise or interference on the transmission path or the indoor unit or other remote controllers are defec...

Page 60: ...d and solution Though the content of operation is displayed on the remote controller some indoor units do not operate is not displayed on the remote controller MA remote controller is not fed PLEASE WAIT keeps being dis played or it is displayed periodically PLEASE WAIT is usually dis played about 3 minutes after the power supply of the outdoor unit is on The remote controller does not operate tho...

Page 61: ...ownward blow in cooling in cause the downward blow operation has been continued for 1 hour At defrosting in heating hot adjusting and thermostat OFF it automatically changes over to horizontal blow Ultra low speed operation is commenced at thermostat OFF Light air automatically change over to set value by time or piping temperature at thermostat ON The fan is to stop during defrosting Fan is to ru...

Page 62: ... the operation frequency Change the indoor unit s LEV opening at defrost SWU2 10ths digit 0 12 3 4 5 6 7 8 9 SWU1 1s digit 0 1 2 3 4 5 6 7 8 9 SWU2 10ths digit 0 1 2 3 4 5 6 7 8 9 SWU1 1s digit 0 1 2 3 4 5 6 7 8 9 1 ON OFF 2 3 4 5 6 7 8 1 ON OFF 2 3 4 5 6 7 8 1 ON OFF 2 3 4 5 6 1 ON OFF 2 Can be set when off or during operation Can be set when off or during operation Switching the target sub cool ...

Page 63: ... 8 1 2 3 4 5 6 1 2 Function Normal Switch of current limitation reading in a different way Enable Normal Ignore current sensor abnormality Silent mode Demand Control Selection see next page Change of defrosting control Forced defrost Normal Silent mode Normal Forced defrost Enable Enable Normal Restriction of maximum frequency Enable Normal Ignore refrigerant filling abnormality Enable Normal Enab...

Page 64: ...ing SW1 2 Silent mode Silent mode operation Outdoor controller board DIP SW8 1 SW1 SW2 Function Demand control OFF ON ON OFF ON OFF OFF ON OFF ON ON 100 75 50 0 Normal Stop Distant control board Relay circuit External output adapter PAC SA88HA E Outdoor unit control board Remote control panel Relay circuit External input adapter PAC SC36NA Outdoor unit control board Relay power supply Procure loca...

Page 65: ... between the terminals with a tester At the ambient temperature 20 Normal 1197 10 Abnormal Open or short Solenoid valve coil Bypass valve SV1 Refer to next page Fan motor MF1 MF2 Measure the resistance between the terminals with a tester Winding temperature 20 W V U 1 TH8 is internal thermistor of power module Y Normal 1435 150 Abnormal Open or short Normal 0 330 Abnormal Open or short 9 7 HOW TO ...

Page 66: ...T VDC between 1 and 4 of the fan connector VDC DC310 340V Y VDC between 1 and 4 of the fan connector VDC DC280 340V when ACTM stops DC350V when ACTM is operating V TEST POINT VCC between 5 and 4 of the fan connector VCC DC15V No NG NG Wiring contact check Contact of fan motor connector CNF1 2 Fuse check Check the fuse F500 on outdoor multi controller board Recover wiring Replace outdoor controller...

Page 67: ...4k 90 17 5k 100 13 0k 110 9 8k High temperature thermistor Thermistor Discharge Compressor TH4 0 10 20 30 40 50 20 10 0 10 20 30 40 50 Temperature Resistance k 500 400 300 200 100 0 25 50 75 100 120 Temperature Resistance k 0 5 2 5 5 2 5 4 5 Vout V PRESSURE MPa 3 2 1 WHT BLU BLK SENSOR 5V DC GND 63HS Vout MICRO COMPUTER MULTI CONTROLLER BOARD 5V DC Output Vout DC HIGH PRESSURE SENSOR 0 180k 25 50k...

Page 68: ...troller board 0 5V DC 2 5 Zero cross signal 0 5V DC 3 4 Not used 6 5 16V DC 7 5 16V DC CNDC DC310V 340V Y DC280V DC350V V 1 3 VCC TEST POINT2 Voltage between pins of C82A DC15V Same as CNF1 2 5 4 VSP Voltage between pins of C515 and C516 DC0V when stopped DC1 6 5V when operated Same as CNF1 2 6 4 CNF1 2 Connect to fan motors 1 4 DC310V 340V Y DC280V 350V V 5 4 DC15V 6 4 DC0 6 5V 7 4 DC15V when sto...

Page 69: ...ross signal 0 5V DC 3 4 18V DC 6 5 16V DC 7 5 16V DC CN3 Thermistor TH8 Heatsink CN5 Detection of primary current Connect to the outdoor noise filter circuit board CN5 CNDC 280V 350V DC 1 3 Connect to the outdoor con troller multi circuit board TABS T Connect to the outdoor noise filter circuit board Voltage among phases 220 240V AC TABN1 SC N1 Connect to the ACTM TABN2 SC N2 Connect to the ACTM N...

Page 70: ...ect to the smoothing capacitor CB1 CB2 TB P2 Connect to the smoothing capacitor CB1 TB U TB V TB W Connect to the compressor MC Voltage among phases 10V 400V AC TB L1 TB L2 TB L3 Connect to the outdoor converter circuit board L1 OU L2 OU L3 OU 380V 415V AC TB N1 Connect to the smoothing capacitor CB2 and the CK capacitor CN7 Connect to the outdoor converter circuit board CN7 Brief check of POWER M...

Page 71: ...PUMY P140YHMB BS PUMY P140YHMBR1 BS PUMY P140YHMBR2 BS L1 A2 L2 A2 L3 A2 Connect to the ACL1 ACL2 ACL3 CN7 Connect to the outdoor power circuit board CN7 CK OU Connect to the CK capacitor L1 IN N IN Connect to the noise filter circuit board LO1 No L1 A1 Connect to the ACL1 L1 OU L2 OU L3 OU Connect to the outdoor power circuit board TB L1 L2 L3 ...

Page 72: ...BS PUMY P125VHMBR2 BS PUMY P140VHMBR2 BS PUMY P100YHMB BS PUMY P125YHMB BS PUMY P140YHMB BS PUMY P100YHMBR1 BS PUMY P125YHMBR1 BS PUMY P140YHMBR1 BS PUMY P100YHMBR2 BS PUMY P125YHMBR2 BS PUMY P140YHMBR2 BS CN2 Connect to the outdoor multi controller board 1 2 24 30V DC 3 4 24 30V DC CN1 Connect to the outdoor noise filter circuit board 1 3 220 240V AC ...

Page 73: ...control ler circuit board CNAC EI Connect to the earth LI NI Voltage of 220 240V AC is input Connect to the terminal block TB1 CN5 52C driving signal Connect to the outdoor controller circuit board CNLVB LO NO Voltage of 220 240V AC is out put Connect to the outdoor power circuit board CNAC1 220 240V AC Connect to the M NET power circuit board M P B CN5 Primary current Connect to the outdoor power...

Page 74: ... TB1 GD1 Connect to the earth CNAC2 AC220 230 240V Connect to the outdoor controller circuit board CNAC CNDC Connect to the outdoor controller circuit board CNDC LO1 LO2 LO3 POWER SUPPLY LO1 LO2 LO2 LO3 LO3 LO1 AC380 400 415V OUTPUT Connect to the outdoor converter circuit board and ACL L1 IN ACL2 ACL3 CNCT Primary current Connect to the outdoor power circuit board CN5 NO Connect to the outdoor co...

Page 75: ... reference Symptom when the unit is in trouble and Io open less than 1 1 The unit does not operate can not be switched ON and L2 short 100k 1M 1 The breaker operates open W 1 The unit does not operate can not be switched ON 2 4220Abnormal stop 9 10 No 189 ACTM error display P and L2 short 100k 1M 1 The breaker operates open W 1 The unit does not operate can not be switched ON 2 4220Abnormal stop 9...

Page 76: ...n the LED1 2 display data No Delay code 1202 1205 1211 1214 1221 Delay code 1402 1600 1601 4320 4330 4350 Abnormality delay Discharge Compressor temperature abnormality Discharge Compressor temperature sensor TH4 abnormality Outdoor pipe temperature sensor TH3 abnormality Heatsink thermistor TH8 abnormality Outside air temperature sensor TH7 abnormality Abnormality delay High pressure abnormality ...

Page 77: ...ting thermo ON Heating thermo OFF ON OFF Heating Cooling Abnormal Normal DEFROST NO Refrigerant pull back no Excitation current no P96 Autochange over fixed mode CN3N1 2 input P95 Undefined CN3S1 2 input P94 Demand CN3D1 3 input P93 Silent CN3D1 2 input 3 min delay no P97 Autochange over permission CN3N1 3 input Display mode Display on the LED1 2 display data No 10001100 01001100 11001100 Protecti...

Page 78: ... C TH3 Outdoor pipe C TH8 Power module C IC1 TH23 Gas C IC2 TH23 Gas C IC3 TH23 Gas C IC4 TH23 Gas C IC5 TH23 Gas C 1 2 3 4 7 5 6 8 Display of actual operating frequency Display of target frequency Display of number of outdoor fan control steps target Display of opening pulse of indoor LEV Display of outdoor subcool SC data and detection data from high pressure sensor and each thermistor Notes 0 F...

Page 79: ...ng C Target subcool C IC1 SC SH C IC2 SC SH C IC3 SC SH C IC4 SC SH C IC5 SC SH C Discharge superheat SHd C Target Pd display heating kgf Target ET display cooling C Target outdoor SC cooling C Target indoor SC SH IC1 C Target indoor SC SH IC2 C Target indoor SC SH IC3 C Target indoor SC SH IC4 C Target indoor SC SH IC5 C 1 2 3 4 5 6 7 8 Display mode No Notes SW1 setting 12345678 01101010 11101010...

Page 80: ...ity delay IC2 LEV opening pulse abnormality delay IC3 LEV opening pulse abnormality delay IC4 LEV opening pulse abnormality delay IC5 LEV opening pulse abnormality delay IC6 LEV opening pulse abnormality delay IC7 LEV opening pulse abnormality delay IC8 LEV opening pulse abnormality delay IC9 LEV opening pulse abnormality delay IC10 LEV opening pulse abnormality delay IC11 LEV opening pulse abnorm...

Page 81: ...bnormality delay C IC8 SC SH at time of abnormality delay C IC9 SC SH at time of abnormality delay C IC10 SC SH at time of abnormality delay C IC11 SC SH at time of abnormality delay C IC12 SC SH at time of abnormality delay C ROM version monitor ROM type Check sum mode IC1 LEV opening pulse at time of abnormality delay IC2 LEV opening pulse at time of abnormality delay IC3 LEV opening pulse at ti...

Page 82: ...SC SH at time of abnormality IC4 SC SH at time of abnormality IC5 SC SH at time of abnormality IC6 SC SH at time of abnormality IC7 SC SH at time of abnormality IC8 SC SH at time of abnormality IC9 SC SH at time of abnormality IC10 SC SH at time of abnormality IC11 SC SH at time of abnormality IC12 SC SH at time of abnormality IC6 Capacity code IC7 Capacity code IC8 Capacity code IC9 Capacity code...

Page 83: ... SH IC6 LEV opening pulse IC7 LEV opening pulse IC8 LEV opening pulse IC9 LEV opening pulse IC10 LEV opening pulse IC11 LEV opening pulse IC12 LEV opening pulse IC6 TH23 Gas C IC7 TH23 Gas C IC8 TH23 Gas C IC9 TH23 Gas C IC10 TH23 Gas C IC11 TH23 Gas C IC12 TH23 Gas C IC6 TH22 Liquid C IC7 TH22 Liquid C IC8 TH22 Liquid C IC9 TH22 Liquid C IC10 TH22 Liquid C IC11 TH22 Liquid C IC12 TH22 Liquid C IC...

Page 84: ... design 60245 IEC57 For example use wiring such as YZW 6 Install an earth longer than other cables Warning Be sure to use specified wires to connect so that no external force is imparted to terminal connections If connections are not fixed firmly it may cause heating or fire Be sure to use the appropriate type of overcurrent protection switch Note that generated overcurrent may include some amount...

Page 85: ...ormation on setting procedures 10 5 EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM 10 5 1 Example using a M NET remote controller Outdoor unit Power supply 3 phase 4 wire 50Hz 380 400 415V Power supply Single phase 50Hz 220 230 240V Grounded Group operation Remote controller wire Pull box Indoor unit Breaker for Wiring and Current Leakage 15A Breaker for Wiring and Current Leakage 1 6mm 2 1 6m...

Page 86: ...alculate the electrical characteristics before applying for a capacity agreement with the local electric power company 10 6 1 Obtaining the electrical characteristics of a CITY MULTI S series system 1 Procedure for obtaining total power consumption 1 Please note that the power consumption of the outdoor unit will vary depending on the total capacity of the selected indoor units 2 Method of obtaini...

Page 87: ...3 Section From Branch to Branch B C 3 Refrigerant Piping Diameter In Section From Branch to Branch 2 Refrigerant Piping Diameter In Section From Branch to Indoor Unit Indoor Unit Piping Diameter Each Section of Piping Refrigerant of 3kg equivalent to 50m total extended piping length is already included when the outdoor unit is shipped Thus if the total extended piping length is 50m or less there i...

Page 88: ... Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d 2 Refrigerant Piping Diameter In Section From Branch to Indoor Unit Indoor Unit Piping Diameter Each Section of Piping Refrigerant of 3kg equivalent to 50m total extended piping length is already included when the outdoor unit is shipped Thus if the total extended piping length is 50m or less there is no need to charge with addi...

Page 89: ...meter Each Section of Piping Refrigerant of 3kg equivalent to 50m total extended piping length is already included when the outdoor unit is shipped Thus if the total extended piping length is 50m or less there is no need to charge with additional refrigerant If the total extended piping length exceeds 50m calculate the required additional refrigerant charge using theprocedure shown on the right If...

Page 90: ...room volumes m3 and find the room with the smallest volume The part with represents the room with the smallest volume a Situation in which there are no partitions 3 Use the results of calculations 1 and 2 to cal culate the refrigerant concentration If the calculation results do not exceed the maximum concen tration perform the same calculations for the larger second and third room etc until it has...

Page 91: ...ing screws Photo 3 3 Removing the electrical parts box 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connecting wire from terminal block 4 Remove all the following connectors from Multi controller board fan motor thermistor Outdoor pipe thermistor Discharge thermistor Low pressure saturated temp thermistor Outdoor high pressure switch high pressure se...

Page 92: ...from the sensor holder Note In case of replacing thermistor Low pressure satu rated temp TH6 replace it together with thermistor Outdoor TH7 since they are combined together Refer to No 5 below to remove thermistor Outdoor TH7 Thermistor TH6 Electrical parts box 5 Removing the thermistor Outdoor TH7 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connec...

Page 93: ... out the thermistor Outdoor pipe TH3 and thermistor Discharge Compressor TH4 from the sensor holder Thermistor Outdoor pipe TH3 Compressor MC 4 way valve coil fixing screw 8 Removing the 4 way valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 valve bed fixing screws 4 10 and 4 ball valve and stop valve fixing screws 5 16 and then remove the valve bed 4 Re...

Page 94: ...panel 5 Pull out the lead wire of high pressure switch and low pres sure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch and low pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the high pressure switch and low pressure switch cover them with...

Page 95: ...he compressor Note Recover refrigerant without spreading it in the air Photo 11 Compressor MC Valve bed Valve bed fixing screw Separator fixing screw Valve bed fixing screws Compressor fixing nut 13 Removing the accumulator 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 12 and remove the front cover panel See Photo 3 4 Remov...

Page 96: ...e switch solenoid valve coil Four way valve and solenoid valve coil Bypass valve Then remove a screw 4 8 from the valve bed to remove the lead wire Pull out the disconnected wire from the electrical parts box Diagram symbol in the connector housing Fan motor CNF1 CNF2 Thermistor Outdoor pipe TH3 Thermistor Discharge TH4 PUMY P YHMB R1 BS Thermistor Compressor TH4 PUMY P YHMBR2 BS Thermistor Low pr...

Page 97: ...6 from the sensor holder Note In case of replacing thermistor Low pressure satu rated temp TH6 replace it together with thermistor Outdoor TH7 since they are combined together Refer to No 5 below to remove thermistor Outdoor Thermistor TH6 Electrical parts box 5 Removing the thermistor Outdoor TH7 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the connecto...

Page 98: ...l out the thermistor Outdoor pipe TH3 and thermis tor Discharge Compressor TH4 from the sensor holder Thermistor Outdoor pipe TH3 4 way valve coil fixing screw 8 Removing the 4 way valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 valve bed fixing screws 4 10 and 4 ball valve and stop valve fixing screws 5 16 and then remove the valve bed 4 Remove 4 right...

Page 99: ...ead wire of high pressure sensor 6 Recover refrigerant 7 Remove the welded part of high pressure sensor Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the high pressure sensor cover it with a wet cloth to prevent it from heating 100 C or more then braze the pipes so that the inside of ...

Page 100: ...ix the separator screw 0 from the valve bed and screw 1 from the bottom of the separator and tilt the separator to the side of the fan motor slightly See Photo 11 5 Disconnect the lead wires from the reactor and remove the 4 screws screw 2 that fix the reactor to remove the reac tor See Photo 12 and 13 Note 1 The reactor is very heavy 4kg Be careful when handling it Note 2 The reactor box is also ...

Page 101: ...mpressor Note Recover refrigerant without spreading it in the air Photo 14 14 Removing the accumulator 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 R...

Page 102: ...EVISED EDITION B PDF 5 Distributed in Aug 2009 No OCH446 REVISED EDITION A PDF 7 Distributed in Nov 2008 No OCH446 PDF 7 Made in Japan New publication effective Sep 2010 Specifications subject to change without notice HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN TM ...

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