My heat pump shows fault H1 / N1 or flashing sun symbol

Last updated 12/09/2019 09:08


  • The heat pump shows fault H1 / N1 or flashing sun symbol

Applies to

  • Air - air heat pump


1. The code means that the defrost function is active. 

  • The function runs to keep external components free of ice, and each program lasts approx. 4 - 8 minutes.
  • The frequency varies depending on the outdoor temperature. 
  • The colder it is outside, the more often this function is activated.

2. While the function is on, the room is not heated. 

This is normal behaviour and not a fault of the appliance.

Book a repair
Book a repair

Out of warranty? Not a problem. We can arrange for a technician to repair your appliance for a fixed price where call out, parts and labour are covered without the worry of unexpected additional costs. Alternatively we can repair your appliance for a monthly subscription with a repair and care plan from Domestic & General Ltd.

Repairs for no more than £140 or £16.49 per month
Book a repair
Spare parts & Accessories
Spare parts & Accessories

Find original spare parts for your appliance in our webshop and have them delivered directly to your door.