Service Handbook
Page
Contents
Safety precautions
Carefully read the labels affixed to the main unit
Use liquid refrigerant to seal the system
Be especially careful when managing the tools
Do not use the existing refrigerant piping
Use a vacuum pump with a reverse flow check valve
Storage of Piping Material
Piping Machining
Reason
Items to be strictly observed
When non-oxide brazing was used
Brazing
Reasons
R22 leakage detector
Airtightness Test
Vacuuming
Cylinder color identification R407C-Gray
Charging of Refrigerant
Dryer
R410A-Pink
P400 Type P500 Type
Appearance of Components
Outdoor unit PURY-P400·500YMF-C
Noise filter Magnetic contactor 52C1 Capacitor C2, C3 52F
Controller Box
51C2 Module IPM Board
Main board
Puhy / Pury
INV board
Cnpow Cnfan CNFC2
Fancon board
Board
CNE CNDC1
SNB board Board
SW4 SW5 SW2 SW1
BC controller
Cntr
Earth
Relay 10 board Relay 4 board
ACC
SV8 SV7
PS3
CMB-P108, 1010, 1013, 1016V-FA
LEV3 SVM2
LEV1 SVM1
TH22
LEV3a
TH25
Electrical Wiring Diagram
PURY-P400·500YMF-C
CMB-P108·1010V-FA
SV7B SV7A SV7C SV8B SV8A SV8C
Symbol
CMB-P1013·1016V-FA
CMB-P108V-FB
LEV3
PURY-P400YMF-C PURY-P500YMF-C
Standard Operation Data
Cooling operation
DB/WB
Heating operation
SWU
Ture Power is on Defrosting end tempera
Function of Dip SW and Rotary SW
SW3
P40 P50 P63
SW2 setting
Indoor unit DIP SW1
Model P71 P80 P100 P125 P140
Function
220V 240V
SW4
Connected indoor units Can be connected without a RP
Before Test Run
Check points before test run
Built-in optional parts
Check points for test run when mounting options
Local remote controller displays code No
Insulation pipe
Not heat at heating
Check points for system structure
Portion
Turn on power source 12 hours before starting operations?
Error stop, compressor trouble
CN40 on the Main board when the system is centralized
Example, 200m or less total length 500m at the farthest
Test Run Method
Warm or cold air is blowing out
Controlled
Switch function
Filter +
Test RUN
Attribute display of unit
Description of registration/deletion/retrieval
Registration procedure
Group registration of indoor unit
Switch G for the interlocked setting mode. See figure below
Operation procedure
Press the switch for confirmation E
No registration
Press the switch for confirmation F twice continuously
Deletion completed Case of group re
Deletion of address not existing
Control at staring
Control of Outdoor Unit 1- 1 PURY-P400·500 YMF-C
Initial processing
Compressor capacity control
Stop
Bypass capacity control
SV6a
OFF
SV1
Oil return control Electronic expansion valve Slev
Defrosting control
Control of liquid level detecting heater
Judgement and control of refrigerant amount
Accumulator CS circuit
Four-way valve
Heat exchanger TH9
Outdoor unit heat exchanger capacity control
Start of initial operation mode Step
Control at initial starting
Example Minutes
Initial start control timing chart
End of initial operation mode 5 minutes Example
Emergency response operating mode
400 500 No Compressor Failure 48 % 65 %
Control of SVM1 only FA type
Control of BC Controller
Control of SVA, SVB and SVC
Control of LEV
Normal operations Trouble observed Stop
Operation Flow Chart
Outdoor unit
Start
Operation No command
BC controller
Normal operations
Indoor unit
Cooling operation Way valve OFF Indoor unit fan Operations
Cooling operation
Normal operations Test run Stop
Test run start Thermostat on
Heating operation
Normal operations Defrosting operations Stop Test run
Thermostat on Inlet temp ˚C
Dry operation
Thermostat on
Same as those in cooling operations
MC2
List of Major Component Functions
MC1
TH5
TH3
TH4
TH6
CH2
CH3
Resistance of Temperature Sensor
Low temperature than overload Control system Temperature
Operating Characteristics and Refrigerant Amount
Adjustment and Judgement of Refrigerant Amount
Symptom
PURY-P400YMF-C PURY-P500YMF-C
Refrigerant Volume
Additional Refrigerant Charge Volume
TH1
Refrigerant Volume Adjustment Mode Operation
Procedure
SC11 SC16
Adjustment starts
SW1 OFF
Turn all of switches Readjust
YES
Pipe Length Or less 60 ~ 90 m
18 kg 27 kg 31 kg
Pressure Sensor
Connector GND Black Vout White Vcc DC5V Red
Principal Parts
Judging Failure
LED
Solenoid Valve SV1~8
SW1
SV3 SV4 SV5 SV6
Solenoid Valves Block1
CV5b
Solenoid Valves Block
SV8 CV7b
CV4b
Check Valves Block1
Check Valves Block2
CV5b CV4b CV2b CV3b
Check Valves Block2
CV6b
Outdoor LEV
LEV Valve Closing and Valve Opening Operations
Compared to the remote control’s
Temperature sensed by Thermistor liquid pipe temperature
Temperature is considerably low
Intake temperature display, it can
Part a
Tester ⊕
Intelligent Power Module IPM
Diode stack
10~50 Ω Tester
Check voltage between a and B
Check method and handling
After checking , if these are factors
NET transmission line break on the side of the room unit
Power terminal block Voltage Verify the power
Main board ----CNS1, CNVCC3
Phenomena
Unit is removed
INV board----CNAC2, CNVCC1, CNL2
No powering signal INV board
Case of M-NET remote controller
30V Check Procedure
CNS1, CNVCC3
Transmission line Wiring miss Door unit M-NET 17 ~ 30V?
Checking method & countermeasure Case Melans is not used
Melans
Normal in case of 10V ~
CNR, CNAC2
Investigation of transmission wave shape/noise
Checking
Forwiring
Method
Earthing
Again, replace the compressor
Disconnected wires should Insulation resistance 2MΩ or more
If the problem is solved and you connect
Vidual Parts Failure Judgment Methods
CNFAN~52F~CN05~CNMF
TB1A~NF~TB1B~CNTR1~T01~CNTR
TB1B~CNPOW, CNFAN~CN04~CNMF
CNFC1~CNFC2
IPM
A1-A2
20~60Ω AC Current sensor Acct
Motor Compressor Red White Black
Black Capacitor C2,C3 Board Red
Start
Troubleshooting the major components of the BC controller
Pressure sensor Pressure sensor troubleshooting flow
OK?
HPS
Temperature Sensor Thermistor troubleshooting flow
Problem No abnormality
Resistance value Thermistor R o=15 k Ω Rt=15exp 273+t
Temperature sensor resistance graph
Temperature ˚C
LEV, Solenoid Valve Troubleshooting Flow
LEV
Intermediate subcool BC controller liquid
Subcool Solenoid Valve Troubleshooting Flow
Output superheat BC controller
Solenoid Valve
SVM1
SVM is turned on and off in accordance with operation mode
Disconnect the connector before measurement
Normal Malfunction
Control Box
BC Controller Disassembly Procedure
Service panel
100
Thermistor Liquid and gas piping temperature detection
Be careful when removing heavy parts Procedure
Ler panel TH11 TH12 CN10 TH15, TH16 CN11
Solenoid Valve Coil
101
LEV
LEV3 LEV1
102
103
CNAC2 TB1B
Mechanical
CNRS2 CNRS3
105
SVM1 LEV3
106
LEV3 SVM BC
107
LEV3 SVM SVA BC
SVA SV3~8
108
LEV3 SVM
109
Slev
Indoor and outdoor units by oper
110
Once vacuum operation protection is
2502 Drain pump
T01~CNTR
111
TB1A~NF~TB1B~CNTR1~F3~
TB1A~NF~TB1B, TB1B~DS~52C
112
VDC
113
MF1~CNFAN
114
Thhs TH5
115
TH HS
TH8
IPM-MC1
116
CNDR2-CNDR1
117
118
Error
On, the wave shape is changed and the error is detected
Communication/system
Transmission circuit bus-busy er
Checking method and processing Error
119
→ Noise if existed, check the noise
Communication trouble between Faulty generating controller
120
Generating Display Detecting
Shut down OC unit power source,
Remote No reply Faulty transmission wiring at IC unit side
More, and make them again
122
123
124
System error
125
126
127
How to read LED for service monitor
LED Monitor Display
Comp
Comp COMP1
128
LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
TH2 TH3 TH4 TH5 TH6 TH7
129
130
131
LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8
132
133
IC16SC
134
135
136
137
138
IC24SH
139
IC24SC
140
141
Stop all indoor units and the compressor
Location of leaks Outdoor unit Cooling mode
SC16 LED monitor switch
Check that all indoor units have been stopped
Location of leaks Outdoor unit when heating
144
145
LPS
Service Handbook PURY-P400, P500YMF-C