Error Code Finder

Select a manufacturer, then choose Heat Pump or Air Conditioning, then match your controller / unit image.

Step 1: Manufacturer
Step 2: System type

Choose Heat Pump or Air Conditioning.

Step 3: Match your controller / unit

Pick the closest match.

Step 4: Open error codes
Vaillant
Worcester Bosch
Daikin
Mitsubishi
Viessmann
NIBE
Samsung
Panasonic
LG
Grant
Baxi
Ideal
Hitachi
Kensa
Stiebel
Aira
Midea

Find Your Heat Pump Error Codes

Start by choosing your manufacturer, then we’ll narrow it down using controller / unit images and take you to the correct error-code page.

Step 1: Manufacturer
Step 2: What are you looking for?

Choose the system type.

Step 3: Match your controller / unit

Pick the closest looking controller or indoor unit. (You can add your own real photos in the data below.)

Step 4: Go to your error codes

We’ve matched your selection. Use the button below.

Vaillant
Premium German brand.
Tier A
GermanyASHP · GSHP
  • Known for: High reliability & strong installer support.
Worcester Bosch
Trusted UK heating brand.
Tier A
UK/GermanyASHP
  • Known for: Strong homeowner confidence.
Daikin
Global HVAC leader.
Tier A
JapanASHP · AC
  • Known for: Quiet, efficient Altherma systems.
Mitsubishi Ecodan
Reliable & widely used.
Tier A
JapanASHP · AC
  • Known for: Solid performance in UK climates.
Viessmann
Premium German systems.
Tier A
GermanyASHP · GSHP
  • Known for: Quiet operation & engineering quality.
NIBE
Scandinavian performance.
Tier A
SwedenASHP · GSHP
  • Known for: Excellent cold-weather efficiency.
Samsung EHS
Quiet & modern.
Tier A
South KoreaASHP · AC
  • Known for: Very low noise levels.
Panasonic Aquarea
Efficient & proven.
Tier A
JapanASHP · AC
  • Known for: Strong efficiency ratings.
LG Therma V
Good value.
Tier A
South KoreaASHP · AC
  • Known for: Good balance of price & performance.
Grant Aerona³
Rural favourite.
Tier A
UK/IrelandASHP
  • Known for: Compact & installer-friendly.
Baxi
Boiler brand branching out.
Tier A
UKASHP
  • Known for: Strong installer relationships.
Ideal Heating
Accessible for homeowners.
Tier A
UKASHP
  • Known for: Simple, affordable installs.
Hitachi Yutaki
High-temp specialist.
Tier A
JapanASHP · AC
  • Known for: High-temp retrofit capability.
Kensa
UK GSHP specialist.
Tier B
UKGSHP
  • Known for: Leading ground-source systems.
Stiebel Eltron
Premium German engineering.
Tier B
GermanyASHP · GSHP
  • Known for: High reliability & longevity.
Aira
New Nordic entrant.
Tier B
SwedenASHP
  • Known for: Subscription-style installs.
Midea
High-volume OEM brand.
Tier B
ChinaASHP · AC
  • Known for: Very competitive pricing.

Tip: If you’re unsure, take a quick photo of your controller and compare it to the images in Step 3.