Inventum fault code 12
Fault code 12 on an Inventum heat pump (including Spaarpomp) means: No communication with room thermostat. 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 12 on an Inventum heat pump indicates: No communication with room thermostat.
Fixing fault code 12: step by step
- Switch the appliance off at the mains for 30 seconds (unplug it), then switch it back on.
- Is it about communication with the thermostat? Then check the thermostat connection and wiring.
- Reset the appliance once. If the code comes straight back, do not keep resetting it.
- If the code comes back, the PCB or burner control unit is probably faulty. Have the appliance read out first to be sure.
Applies to
Inventum Spaarpomp, Niet van toepassing.
Click a model for the parts list and exploded view of that appliance.
Fault code 12 on other Inventum series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- 12 on Ecolution, Modul-AIR: No communication with the room thermostat.
Matching parts
Inventum parts are available from Instalpunt; shipping to EU countries from €12.95 (€16.95 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:
Inventum air-in sensor € 37.30
Inventum air-out sensor € 38.56
Inventum air filter € 39.40
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 Inventum heat pump fault code 12 mean?
No communication with room thermostat.
How do I fix fault code 12 on an Inventum 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 Inventum fault code 12?
That depends on the exact cause. In the Inventum parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code 12 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 Inventum heat pump faults and codes at a glance →