Atlantic fault code L7
Fault code L7 on an Atlantic heat pump (including Atlantic Aurea 5) means: Mixing valve fault: Water pump and/or water circuit blocked. Reset the appliance once. If the code comes back, a part is usually faulty. You can check the water pressure and settings yourself; leave work on gas-carrying parts to a certified gas engineer.
After a safety alert (gas, flue gas, combustion), reset no more than once and call in a certified gas engineer. If you smell gas, call your national gas emergency number or 112 immediately.
Cause
Fault code L7 on an Atlantic heat pump indicates: Mixing valve fault: Water pump and/or water circuit blocked.
Applies to
Atlantic Atlantic Aurea 5, R32 Hybrid Add On.
Fault code L7 on other Atlantic series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- L7 on Atlantic Aurea 5, R32 Hybrid Add On: Mixing valve fault: PCB.
- L7 on Atlantic Aurea 5, R32 Hybrid Add On: Mixing valve fault: Mixing valve.
Matching parts
Atlantic parts are available from Instalpunt; shipping to EU countries from €17.95 (€24.95 for more distant countries), usually 3–5 working days.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Atlantic sensor plate heat exchanger (cooling mode) € 15.68
- Atlantic outdoor temperature sensor € 17.65
- Atlantic temperature sensor (discharge temp.) € 28.75
Fix it yourself or call an engineer?
Always consult the manual for your appliance and work safely. If in doubt or if the fault comes back, call in a qualified professional. A question about a part? Write to us at info@instalpunt.nl.
Frequently asked questions
What does Atlantic heat pump fault code L7 mean?
Mixing valve fault: Water pump and/or water circuit blocked.
How do I fix fault code L7 on an Atlantic heat pump?
First check the cause described above. Then restart the appliance using the reset button. If the message comes back, a part usually needs replacing or the fault needs to be repaired by a qualified professional.
Which parts do I need for Atlantic fault code L7?
That depends on the exact cause. In the Atlantic parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code L7 myself?
You can reset the appliance and check things like the water pressure or settings yourself. Work on gas-carrying parts must be left to a certified gas engineer.
All Atlantic heat pump faults and codes at a glance →