ATAG fault code 9E34
Fault code 9E34 on an ATAG heat pump (including ENERGION ODM 11 and ENERGION ODM 11 T) means: Low pressure protection. 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 9E34 on an ATAG heat pump indicates: Low pressure protection.
Fixing fault code 9E34: 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
ATAG ENERGION ODM 11, ENERGION ODM 11 T, ENERGION ODM 120 T, ENERGION ODM 150 T, ENERGION ODM 4, ENERGION ODM 40, ENERGION ODM 5, ENERGION ODM 50, 3069660, 3069661, 3069662, 3069663, 3069664, 3069665, 3069666, 3069667.
Click a model for the parts list and exploded view of that appliance.
Matching parts
ATAG 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 Atag-series: A Series · i Series (iCon) · Q Series · E Series · P-series (iCon) · Blauwe Engel · XL-series.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Atag electrical wiring water flow protection € 6.80
- Atag 4-way valve coil ODM for e.g. Energion ODM 80 65120793 € 28.54
- Atag safety relief valve 3 bar € 40.77
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 ATAG heat pump fault code 9E34 mean?
Low pressure protection.
How do I fix fault code 9E34 on an ATAG 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 ATAG fault code 9E34?
That depends on the exact cause. In the ATAG parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code 9E34 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 ATAG heat pump faults and codes at a glance →