Intergas fault code n001
Fault code n001 on an Intergas heat pump (including Xtend) means: Water pressure too low, parameter P020. 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 n001 on an Intergas heat pump indicates: Water pressure too low, parameter P020.
Fixing fault code n001: 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
Intergas Xtend, Hybrid lucht-water.
Matching parts
Intergas parts are available from Instalpunt; shipping to EU countries from €12.95 (€16.95 for more distant countries), usually 3–5 working days.
Parts per Intergas-series: Kombi Kompakt HRE · Kombi Kompakt HReco · Kombi Kompakt HR · Xtreme · Xtend · Prestige.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Intergas HCU control PCB Xtend € 26.99
- Intergas outdoor unit 5kW service valve 3-way € 55.07
- Intergas outdoor unit 5kW evaporator sensor for Xtend € 46.75
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 Intergas heat pump fault code n001 mean?
Water pressure too low, parameter P020.
How do I fix fault code n001 on an Intergas 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 Intergas fault code n001?
That depends on the exact cause. In the Intergas parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code n001 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 Intergas heat pump faults and codes at a glance →