When the error code 'F1' appears you can do the following to fix the problem:
- Check whether the connection of the outdoor unit and indoor unit is one to one, otherwise connect the L, N and communication line of the indoor unit and outdoor unit one to one.
- Measure whether the voltage between the zero line and the communication line is 18V-30AC half-wave signal, check whether the communication circuit on the indoor and outdoor electric control board has been damaged, otherwise replace it.
- Check whether the LED on the outdoor power board has been on, otherwise replace the electric control board.
- Check whether the unit is abnormal caused by the external interference, if it is, then find the interfering source and remove it.
If you want any further help or want to purchase a new part for your air conditioning, contact us via email at info@airconditioningcentre.com or call us at 0370 3344 556