Mitsubishi Electronics P500YMF-C, PURY-P400 92

–92–

2) Temperature Sensor

Thermistor troubleshooting flow

Start

Disconnect applicable thermistor

connector from the board.

Measure temperature of applicable

thermistor (actual measured value).

Check thermistor resistance value.

Compare temperature for thermistor

resistance value with actual mea-

sured valued.

difference?

Insert applicable thermistor connector

into board, and check sensor input

temperature on LED monitor for differ-

ence.

difference?

No abnormality

Change thermistor.

Check for connection

problem.

Change the controller

board.

Note 5

Yes

Yes Note 4

Note 2

Note 1

Note 3

Contents

Main Service Handbook Page Contents 2 Safety precautions Before installation and electric work Symbols used in the text Symbols used in the illustrations 11 3 11 1PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT 4 [1] Storage of Piping Material Page 6 [3] Brazing 7 [4] Airtightness Test [5] Vacuuming 8 [6] Charging of Refrigerant [7] Dryer 22 9 PURY-P400500YMF-C 22 2COMPONENT OF EQUIPMENT [1] Appearance of Components 10 Controller Box 11 MAIN board PUHY / PURY 12 INV board Page Page 15 BC controller Page 17 [2] Refrigerant Circuit Diagram and Thermal Sensor PURY-P400, 500YMF-C * CMB-P108, 1010, 1013, 1016V-FA CMB-P108V-FB Page 21 CMB-P1081010V-FA 1 2 < Note1:TB02 is terminal block for transmission. Transformer Thermistor sensor Expansion valve < Symbol SV1 ~ 16A SVM1, 2 T1 ~ 16 Solenoid valve < Note1:TB02 is terminal block for transmission. Thermistor sensor Expansion valve TB01 [4] Standard Operation Data 1 Cooling operation 25 2 Heating operation 26 [5] Function of Dip SW and Rotary SW (1) Outdoor unit PURY-P400500YMF-C. 1Variable capacity unit MAIN board 27 (2) Indoor unit DIP SW1, 3 Model P71 P80 P100 P125 P140 P200 P250 Capacity (model name) code 14 16 20 25 28 40 50 SW2 setting Model P20 P25 P32 P40 P50 P63 Capacity (model name) code 220V 240V 33 33 3TEST RUN [1] Before Test Run Page Page Page [2] Test Run Method TEST RUN ON/OFF 4 34 GROUPING REGISTRATION OF INDOOR UNITS WITH M-NET REMOTE CONTROLLER C + Page 11 Group setting mode Page Page * * 55 55 5CONTROL [1] Control of Outdoor Unit [1]- 1 PURY-P400500 YMF-C Page Page Page Page TH9 45 Four-way valve Indoor heat Outdoor heat exchanger Start of initial operation mode Initial operation mode is finished. Step 1 Pause Step Step 2 47 <Initial start control timing chart> Page [2] Control of BC Controller 50 [3] Operation Flow Chart (1) Outdoor unit 51 (2) BC controller 52 (3) Indoor unit 53 (4) Cooling operation Test run 54 (5) Heating operation Defrosting operations Test run 55 (6) Dry operation Thermostat ON 56 [4] List of Major Component Functions 57 58 [5] Resistance of Temperature Sensor 66 66 6REFRIGERANT AMOUNT ADJUSTMENT [1] Operating Characteristics and Refrigerant Amount [2] Adjustment and Judgement of Refrigerant Amount Page [3] Refrigerant Volume Adjustment Mode Operation 63 (2) Refrigerant adjustment in Cooling season (Flow chart) In case of PURY-P400, 500YMF-C YES NO Adjustment starts. Adjustment completed. 64 (3) Refrigerant adjustment in heating season (Flow chart) In case of PURY-P400, 500YMF-C Page 77 77 7TROUBLESHOOTING [1] Principal Parts Page Page Page Page Page Page 73 74 75 1 10~50 2 10~50 3 10~50 110~50 210~50 310~50 1 2 3 + Tester Tester -+ Tester - Tester + 76 (2) Trouble and remedy of remote controller (In the case of MA remote controller) Check method and handling 77 Check method and handling *1 As for transformer checks, It is subject to the failure judgment method of main parts in 4.5. 78 79 (In the case of M-NET remote controller) 80 Checking method & countermeasure In case MELANS is not used 81 82 83 84 Check for earthing Checking for wiring method 85 86 87 88 A1A2 1/L1 3/L2 5/L3 2/T1 4/T2 6/T3 IPM 90 91 92 2) Temperature Sensor Thermistor troubleshooting flow 93 94 3) LEV, Solenoid Valve Troubleshooting Flow 95 96 Brown Red Blue Orange Yellow White 10k LED Brown Red Blue Orange Yellow White To LEV 97 2 Solenoid Valve 98 99 [2] BC Controller Disassembly Procedure 100 101 102 103 104 [3] Self-diagnosis and Countermeasures Depending on the Check Code Displayed (1) Mechanical 105 106 107 108 109 110 111 112 113 114 115 U W 116 117 118 (2) Communication/system 119 120 121 122 123 124 125 (3) System error 126 127 [4] LED Monitor Display 128 129 130 131 132 133 134 135 136 137 138 139 140 141 8PREPARATION, REPAIRS AND REFRIGERANT REFILLING WHEN REPAIRING LEAKS [1] Location of leaks: Extension piping or indoor units (when cooling) 142 [3] Location of leaks: Extension piping or indoor units (Heating mode) [2] Location of leaks: Outdoor unit (Cooling mode) Page 9CHECK THE COMPOSITION OF THE REFRIGERANT 144 145