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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. When a malfunction has been identified, do not reset the system. 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. In this case [00 A4] represents 164 compressor "ON" actuations. Display for fault codes: MALFUNCTION CHECK MALFUNCTION CHECK · · Fault code Indoor unit number The 1st fault detected The 2nd fault detected · In this case indoor unit No. 1 has [0C] fault code. TA sensor abnormality. MALFUNCTION CHECK In this case indoor unit No. 1 has [0C] fault code and indoor unit No. 15 has [0d] fault code followed by [04] fault code. · MALFUNCTION CHECK · MALFUNCTION CHECK · 37 8. 3 2-Pipe system fault code summary. Fault codes can be identified from either the Remote controller, Multi controller or Outdoor unit as shown in the diagram below. Remote controller fault code No communication INV to I/F 04 No communication M/C to O/D No communication I/D to M/C 0b 0C 0d 08 09 99 Drain pump fault - I/D unit TA sensor fault TC sensor fault Reverse TC temperature change No TC temperature change No communication I/D to R/C § Multi controller display switch position 1 No communication I/F to INV 04 No communication M/C to O/D § Outdoor Unit No communication I/F to INV Refer to inverter control board diagnostics 8A 88 80 81 82 83 84 M/C control board fault No communication initially M/C to O/D ThA sensor fault ThB sensor fault ThC sensor fault ThD sensor fault ThX sensor fault M/C drain pump fault I/D capacity rank codes too high I/D capacity code set to "0" LED 7 LED 8 M/C 1 fault M/C 2 fault § LED 6 Over-capacity § § § § § § § Refer to the section on the inverter control board diagnostics § § § § Display switch set to position "8" (LED on) LED 1 LED 2 LED 3 LED 4 LED 5 ThA sensor fault ThB sensor fault ThC sensor fault ThD sensor fault ThX sensor fault 15 § § Refer to M/C "Preheat Defrost" flashing 0b 89 Display switch set to position "3" (LED on) 1C Refer to O/D § 1C Refer to O/D LED 1 ThD1 sensor fault LED 2 ThD2 sensor fault LED 3 ThS sensor fault LED 4 High pressure fault LED 5 Pressure sensor fault LED 6 Discharge temperature > 130ºC LED 7 Suction temperature > 40ºC LED 8 Low pressure < 0. 25kgf/cmG 14 1d 1F 18 Refer to O/D Refer to O/D Refer to O/D Refer to O/D Refer to O/D § § § § § 14 1d 1F 18 21 Refer to O/D Refer to O/D Refer to O/D Refer to O/D Refer to O/D 21 Phase rotation incorrect "MALFUNCTION CHECK" flashing on R/C. 38 8. 4 3-Pipe system fault code summary. Fault codes can be identified from either the Remote controller, Multi controller or Outdoor unit as shown in the diagram below. Remote controller fault code No communication INV to I/F 04 No communication M/C to O/D No communication I/D to M/C 0b Drain pump fault - I/D unit § Multi controller display switch position 1 No communication I/F to INV 04 No communication M/C to O/D § Outdoor Unit No communication I/F to INV Refer to inverter control board diagnostics Interface control board. SW1 set to "2", SW2 set to "0". [. . . ] · Ensure to create a vacuum of -76cmHg at both the Liquid and Gas sides. Liquid pipe and Discharge gas pipe charge ports. 2-Pipe Charge port Service valve Liquid pipe Gas pipe 3-Pipe Charge ports Service valve Packed valves Liquid pipe Discharge gas pipe Suction gas pipe 49 12. ADDITIONAL REFRIGERANT · The Super multi outdoor units contain sufficient refrigerant to operate an installation having 5 metres of pipework (when delivered). · Refer to the diagram below when calculating the amount of refrigerant required, use only HCFC - 22. [. . . ]