TradeAssistIQHome

Hitachi Yutaki M & Yutaki S fault 19

Activation of the protection device for the indoor fan motor

Heat pump

What it means

Fan motor fault: protection device for the indoor fan motor has activated.

Likely causes

  1. Loose, disconnected, broken or short-circuited connector
  2. Failure of fan motor

Where to start

  1. Check connector and wiring of THMwohp
  2. Lubrication: fan motors are pre-lubricated and sealed at factory - no lubrication maintenance required.
  3. Sound and vibration: Check for abnormal sounds and vibrations.

The full answer, free

  • 2 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 337), right under the answer
Ask about 19 freeCreate a free account

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 Hitachi manual for the Yutaki M & Yutaki S. Check the model on the data plate before you order parts.

Other Hitachi Yutaki M & Yutaki S fault codes