Inventum fault code 70
Fault code 70 on an Inventum heat pump (including Spaarpomp) means: Water pressure sensor error. Reset the appliance once. If the code comes back, a part is usually faulty, often a temperature sensor. 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 70 on an Inventum heat pump indicates: Water pressure sensor error.
Fixing fault code 70: step by step
- Read the water pressure on the display or gauge. With the system cold it should be between 1.5 and 2 bar.
- If it is lower, top up to 1.5–2 bar with the filling valve or filling loop, then close the valve again.
- Bleed the radiators with a radiator key, then check the pressure again and top up if needed.
- Reset the appliance once. If the code comes straight back, do not keep resetting it.
- Does the pressure drop again within a few days, or does the code come back? Then there is a leak somewhere (radiator, pipe, pressure relief valve or expansion vessel) or the pressure or flow sensor is faulty.
Applies to
Inventum Spaarpomp, Niet van toepassing, Ecolution, Modul-AIR.
Click a model for the parts list and exploded view of that appliance.
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.
For fault code 70, the part involved is usually in the category: sensor.
Based on the cause, these original Inventum parts fit (always check the type number of your appliance):
- Inventum air-in sensor € 37.30
- Inventum air-out sensor € 38.56
- Inventum evaporator sensor € 56.76
Further reading on this cause
Other Inventum codes with the same cause
- 30 — Boiler upper over-temperature sensor error
- 31 — Boiler lower under-temperature sensor error
- 32 — Flow-through heater temperature sensor error
- 33 — Air-in GCM sensor error
- 34 — Air-out GCM sensor error
- 35 — Air flow GCM sensor error
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 70 mean?
Water pressure sensor error.
How do I fix fault code 70 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 70?
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 70 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 →