User manual TOSHIBA MAR-M102HTM8-PE SERVICE MANUAL

[. . . ] A90-9819 SERVICE MANUAL AIR-CONDITIONER 2-PIPE SUPER MULTI, HEAT PUMP Outdoor Unit Multi Controller MAR-M102HTM8-PE RBM-Y1032-PE (3-way) RBM-Y1042-PE (4-way) 3-PIPE SUPER MULTI, HEAT PUMP WITH SIMULTANEOUS HEATING AND COOLING Outdoor Unit MAR-F102HTM8-PE Multi Controller RBM-Y1032F-PE (3-way) RBM-Y1042F-PE (4-way) Printed in UK March 1998 s CONTENTS 1. SUPER MULTI SYSTEM BASIC COMPONENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 OUTLINE OF CONTROL SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CONSTRUCTION VIEWS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 WIRING DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 REFRIGERANT CYCLE DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 SELF DIAGNOSTIC DISPLAY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 FAULT CODE DISPLAY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 CONTROL FEATURES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] M/C 2 7. 4 RBM-Y1032F-PE, RBM-Y1042F-PE, 3-Pipe Multi Controller The combination of the display switch and the four 7 segment LED's (LD101 - LD104) indicate the diagnostic details. MCC - 1223 7 segment LED Unit A Unit B Unit C Unit D Capacity rank switches Display switch Multi controller control board Switch Position 7 Segment LED Display LD101 LD102 Indication LD103 LD104 0 1 Serial signal Fault codes Frequency instructions to the outdoor unit. Oil retrieval, Superheat control Defrost --- --- --- Receiving Sending to from unit B unit B --- Sending Receiving Receiving from from to unit A unit A outdoor unit --- Receiving Sending from to unit D unit D --- Sending Receiving Sending to to from outdoor unit C unit C unit [E] --- Fault code display (Normal [00] ) Refer to fault code section for details. Instructed demand frequency of Cooling or Heating [00 - 1F] Refer to the 2-Pipe Multi controller display conversion table for display switch position "2". Superheat Oil retrieval control unit B unit B Superheat Oil control retrieval unit A unit A Superheat Oil control retrieval unit D unit D Superheat Oil control retrieval unit C unit C 2 --- --- --- --- --- --- --- --- 3 Displays [dF] during defrost operation M/C operating mode: Heating [H-] Cooling: [C-]* --[c] [P] [P] [P] [P] [h] [h] [h] [h] [h] --[k] [A] [b] [c] [d] [A] [b] [c] [d] [H] Displays sensor temperature Refer to the 2-Pipe Multi controller sensor temperature conversion table (7. 2. 3). 4 Operation mode Outdoor unit operating mode:Heating [H-], Cooling [-C], Simultaneous Heating [Hc], Simultaneous Cooling [hC], Stop [--], Defrost [J-] --Displays unit being tested [ A b C d ] Normal display [0], Restart timer counting [1] Indicates faulty unit connection [A b C d] 5 6 7 8 9 10 11 12 13 14 15 Restart timer Circuit test PMV A PMV B PMV C PMV D ThA ThB ThC ThD ThX Displays the degree of PMV opening (0 - 240) as a Hexadecimal Code: [00] : Closed, [F0] : Fully Open * and Simultaneous Cooling/Heating [HC], Defrost [J-]. 33 7. 5 Inverter control board, 2-Pipe and 3-Pipe Outdoor Units. The combination of the dip switch SW1 and the four LED's (D1 ~ D4) indicate the inverter compressor speed and diagnostic details. MCC - 1251 D1 D2 D3 D4 SW1 ON 21 Inverter control board SW1 position 1 ON OFF OFF ON 2 ON ON OFF OFF Display information Inverter compressor demand frequency Inverter compressor actual frequency Fault code indication Fault indication sequence 7. 5. 1 Inverter compressor speed indication LED Binary display XXXX XXOO XOXX XOXO XOOX XOOO OXXX OXXO OXOX OXOO OOXX OOXO OOOX OOOO Inverter compressor freq. OFF 3 4 5 6 7 8 9 A B C D E F 0 Hz 30. 5 Hz 38. 1 Hz 42. 0 Hz 45. 8 Hz 53. 4 Hz 61. 0 Hz 68. 7 Hz 76. 3 Hz 83. 9 Hz 91. 6 Hz 103. 0 Hz 110. 6 Hz 121. 6 Hz 34 Heating operation maximum frequency. Cooling operation maximum frequency. 7. 5. 2 Inverter fault code indication. LED Display OOO¤ ¤OOO OOOO O¤OO OO¤O Fault indicated Inverter high pressure or compressor winding temperature Inverter compressor winding short circuit protection TE sensor open / short circuit (2-Pipe only) Inverter compressor overload protection Inverter circuit / compressor failure Remote controller fault code 21 14 18 1d 1F 7. 5. 3 Inverter fault indication sequence. LED Display XXXO XXOX XXOO ¤O¤¤ Fault indicated First failure Second failure Third failure System locked out X LED off O LED on ¤ LED flashing 7. 6 Control board communication diagram. Multi controller M/C (1) Interface control board I/F Inverter control board INV Multi controller M/C (2) Remote Controller Indoor Unit A few seconds 1 minute 1 minute 1 minute Remote controller fault code display time lapse for system malfunctions. Serial signal abnormalities: Between the I/F and the INV Between the M/C and the I/F Between the indoor unit and the M/C Between the remote controller and indoor unit INV abnormality: I/F abnormality: M/C and Indoor unit abnormality: More than 3 minutes. FAULT CODE DISPLAY INFORMATION The remote controller, multi controller and outdoor unit have the facility to display fault codes which are used to determine any malfunction of the system. · The remote controller is provided with a "check" button and a malfunction check display. · The multi controllers and outdoor units are provided with display switches and LED displays. Initially malfunctions can be identified from the remote controller check display. Details of the multi controller and outdoor unit malfunctions can be determined from their control boards. (Multi controller malfunctions are also displayed on the outdoor unit interface control board). 8. 1 Fault code identification. Press the "CHECK" button on the remote controller and observe the malfunction display. The location and cause of the malfunction can be determined from the fault code. Flashing "PREHEAT DEFROST" · The total capacity rank settings of indoor units connected exceeds the allowable level, or an indoor capacity rank is set at "0" (Multi controller). · For the 2-Pipe system heating operation has priority over cooling. In the event of an indoor unit requesting cooling operation when another is in heating mode, the "PREHEAT DEFROST" will flash. "MALFUNCTION CHECK" Flashes when phases are rotated. Reset button · Pressing the reset button with a pin will clear the memory. Check button · Pressing for 1 second will display the number of compressor actuations and fault codes. · Pressing for 5 seconds will reset the indoor unit microprocessor. · Pressing for 10 seconds will clear only the fault codes. 36 8. 2 Details of the malfunction check display The following display sequence occurs when the check button is pressed for 1 second. (Note: Up to 16 indoor units can be connected to one remote controller using group control). The number of compressor "ON" actuations for No. 1 outdoor unit is displayed for 2 seconds, followed by: 2. 2 fault codes for each of the 16 indoor units can be displayed at 2 second intervals. Example: Display for the number of compressor "ON" actuations: MALFUNCTION CHECK The display is in Hexadecimal Code. [. . . ] · Supply oxygen free nitrogen (OFN) gas at a pressure of 30kgf/cmG to the charge port on the suction gas side service valve. 11. 2 Evacuation and Dehydration. · When removing air and dehydrating refrigerant pipe work use an approved type of vacuum pump, do NOT use refrigerant to purge the air. 2-Pipe evacuation positions: 3-Pipe evacuation positions: (Refer to diagrams below). · Ensure to create a vacuum of -76cmHg at both the Liquid and Gas sides. [. . . ]