Ideal Logic Air fault 370-F4

Outdoor electrical filtering fault

Heat pump

What it means

Heat Pump fault F4: outdoor electrical filtering fault.

Likely causes

  1. Electrical filter component failure on outdoor unit
  2. Inadequate corrosion inhibitor dosing leading to gradual system performance deterioration
  3. Missing or undersized system filter allowing debris into primary circuit

Where to start

  1. Access the Logic Air Monobloc outdoor unit
  2. Assess installation conformity to Installation Instructions and rectify faults
  3. Confirm correctly rated circuit breakers are fitted at the consumer unit

The full answer, free

  • 30 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 103), right under the answer

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 Ideal manual for the Logic Air. Check the model on the data plate before you order parts.

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