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Daikin Altherma fault E7-00

Outdoor unit: malfunction of outdoor unit fan motor

Heat pump

What it means

Fan does NOT start 15~30 seconds after ON signal. It can occur that the error code is triggered when the fan motor is running caused by a faulty rotating sensor signal.

Likely causes

  1. Faulty outdoor unit fan motor
  2. Faulty inverter PCB

Where to start

  1. Perform a check of the outdoor unit fan motor
  2. Perform a check of the inverter PCB
  3. Confirm the rectifier voltage is below 10 V DC before proceeding

The full answer, free

  • The readings and component tests from the manual
  • How to put it right, step by step
  • The manual page for this fault (page 40), 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 Daikin manual for the Altherma. Check the model on the data plate before you order parts.

Other Daikin Altherma fault codes