Panasonic WH-UD28AE Service Manual Manual pdf 46 page image
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Panasonic WH-UD28AE Service Manual

Also see for WH-SD24AE: Operating instructions

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Contents
  1. Table Of Contents
  2. safety precautions
  3. specifications
  4. WH-SD28AE WH-UD28AE
  5. Features
  6. Location of Controls and Components
  7. Outdoor Unit
  8. Dimensions
  10. refrigeration and water cycle diagram
  11. Block Diagram
  12. Wiring Connection Diagram
  14. Electronic Circuit Diagram
  16. Printed Circuit Board
  18. installation instruction
  19. indoor unit
  20. outdoor unit
  21. connect the cable to the outdoor unit
  22. operation and control
  23. water pump
  24. pump down operation
  25. protection control
  26. protection control for heating operation
  27. servicing mode
  28. maintenance guide
  29. troubleshooting guide
  30. Air-to-Water Heatpump Indoor And Outdoor Units And Pressure And Electric Current
  31. breakdown self diagnosis function
  32. error codes table
  33. Self-diagnosis Method
  34. disassembly and assembly instructions
  35. To Remove Pressure Gauge
  36. To Remove Electronic Controller Board and Transformer
  37. To Remove Pressure Relief Valve, Flow Switch and Water Pump
  38. technical data
  39. heating capacity table
  40. exploded view and replacement parts list
  41. WH-UD24AE WH-UD28AE
Panasonic WH-UD28AE Service Manual Manual pdf 46 page image
4616.5.4. Outdoor Current Transformer Open Circuit (H16)Malfunction Decision Conditions:A current transformer (CT) is detected by checking the compressor running frequency ( rated frequency) and CT detected inputcurrent (less than 0.65A) for continuously 20 seconds.Malfunction Caused:1. CT defective.2. Outdoor PCB defective.3. Compressor defective (low compression).
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This manual is suitable for:
WH-SD24AEWH-SD28AEWH-UD24AEWH-UD28AE
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