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Panasonic Aquarea T-CAP R32 fault H76

Indoor-control panel communication abnormality

Heat pump

What it means

During standby and operation of cooling and heating, indoor-control panel communication error occurs.

Likely causes

  1. Remote controller wiring fault
  2. Communication line fault
  3. Faulty remote controller
  4. Faulty connector connection
  5. Faulty indoor unit PCB (main)
  6. Indoor communication error

Where to start

  1. Confirm Force heater request ON by user OR auto turn ON by remote controller during error
  2. Check latest mode selection sent by remote controller (heat/cool/tank)
  3. Turn OFF the power and check the CN-REMOTE connector connection

The full answer, free

  • 6 more checks in order
  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 186), right under the answer
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Safety: Isolate the outdoor unit and any backup heater, and give the inverter capacitors time to discharge before you open the electrics. Anything on the refrigerant circuit needs F-gas certification.

From the Panasonic manual for the Aquarea T-CAP R32. Check the model on the data plate before you order parts.

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