Inventum fault code 90
Fault code 90 on an Inventum heat pump (including Ecolution) means: Compressor locked out (repeated error 80). Reset the appliance once. If the code comes back, a part is usually faulty, often the compressor or inverter module. 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 90 on an Inventum heat pump indicates: Compressor locked out (repeated error 80).
Fixing fault code 90: step by step
- Check that the outdoor unit is clear (no leaves, snow or ice) and that its circuit breaker is on.
- Switch the appliance off at the mains for a few minutes and restart it.
- If the code comes back, the problem is the compressor or inverter module. Only an F-gas certified engineer may work on the refrigerant circuit.
Applies to
Inventum Ecolution, Modul-AIR.
Fault code 90 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:
- 90 on Spaarpomp, Niet van toepassing: Error code 80 repeated within 24 hours. Compressor locked out.
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.
Based on the cause, these original Inventum parts fit (always check the type number of your appliance):
- Inventum compressor cable € 70.84
- Inventum inverter complete € 2,794.59
- Inventum cable inverter - fan € 86.92
Further reading on this cause
Other Inventum codes with the same cause
- 94 — Compressor locked out (repeated error 81)
- AP4 (geen fault) — Pause mode, compressor may not be started
- F-03 — Compressor emergency operation
- F-81 — Internal compressor protection open, compressor overloaded
- F-94 — Air in the system, pump defective, condenser or compressor defective
- Inverter alarm — Power cable connector not connected properly, fault in inverter, fault in compressor
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 90 mean?
Compressor locked out (repeated error 80).
How do I fix fault code 90 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 90?
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 90 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 →