Panasonic U-72MF2U9 Service Manual Manual pdf 102 page image
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Panasonic U-72MF2U9 Service Manual

Also see for U-120MF2U9: Installation instructionsOperating instructionsInstallation instructionsTechnical data

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Contents
  1. check of density limit
  2. precautions for installation using new refrigerant
  3. Table Of Contents
  4. Table Of Contents
  5. Section 1: CONTROL FUNCTIONS
  6. Introduction
  7. Selecting Outdoor Unit for Operation
  8. Compressor Control
  9. Output of PCB
  10. Outdoor Fan Control
  11. Outdoor Unit CCU (command controller unit) Control
  12. Tube Refrigerant Recovery Control
  13. Oil Control
  14. Defrost Control
  15. Discharge Tube Accumulated Refrigerant Recovery Control
  16. Upper Current Limitation Mode (Demand control)
  17. Backup Operation
  18. Other Functions
  19. Detailed Settings in EEPROM of Outdoor Unit
  20. Outdoor Unit Control PCB
  21. control functions
  22. Section 2: OUTDOOR UNIT REPAIR PROCEDURES
  23. Removing Panels
  24. Discharging Compressor Oil
  26. Recovering Refrigerant
  27. Checking for Leakage After Repair
  28. Evacuating System
  29. Charging Compressor Oil
  30. Compressor
  31. Replacing Peripheral Parts of Fusible Plug
  32. High and Low Pressure Sensors
  33. Section 3: OUTDOOR UNIT MAINTENANCE REMOTE CONTROLLER
  34. Overview
  35. Functions
  36. Ordinary Display Controls and Functions
  37. Monitoring Operations
  38. Outdoor Unit Alarm History Monitor
  39. Mode Settings
  46. Section 4: REMOTE CONTROLLER FUNCTIONS
  47. Simple Settings Function
  48. Detailed Settings Function
  49. indoor fan performance
  50. Remote Controller Servicing Functions
  51. Section 5: TROUBLE DIAGNOSIS
  52. Contents of Remote Controller Switch Alarm Display
  53. Outdoor Unit Control Panel LED Display
  54. WAY Alarm Codes
  55. Blinking Inspection Display on the Remote Controller
  56. Inspection and Characteristics of Parts
  57. Test Pin
  58. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently
  59. Section 6: TEST RUN
  60. Preparing for Test Run
  61. Test Run Procedure
  62. Main Outdoor Unit PCB Setting
  63. Function Switches on P. C. Board
  64. Auto Address Setting
  65. Setting Test Run Remote Controller
  66. Caution for Pump Down
Panasonic U-72MF2U9 Service Manual Manual pdf 102 page image
3WAY VRF SYSTEMOutdoor Unit Maintenance Remote Controller3 - 41234567893. Ordinary Display Controls and Functionsn Functions on the ordinary display• Connect the special service checker wiring to the outdoor unit PCB.The connection is shown in the figure below.l If the communications line in the inter-unit control wiring is connected, it can be left as-is.l In case of an independent outdoor unit (1 maintenance remote controller connected to 1 outdoor unit, autoaddress setting for indoor units not completed), both setting mode 1 and setting mode 2 can be used.l The overall system status for that refrigerant system is displayed.Special service checker wiringPCB connector (3P, BLU)RC (3P, BLU)Outdoor unit PCBRelay connector (2P, WHT)Remote controller Ass’y
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This manual is suitable for:
U-120MF2U9U-144MF2U9U-72MF2U9U-96MF2U9
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