Itho Daalderop fault code 15
Fault code 15 on an Itho Daalderop boiler (including AquaMax DV) means: Gas valve does not close. 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 15 on an Itho Daalderop boiler indicates: Gas valve does not close.
Fixing fault code 15: step by step
- Check that the gas valve at the appliance is open and that other gas appliances, such as the hob, are getting gas.
- Reset the appliance once. If the code comes straight back, do not keep resetting it.
- If the code comes back, the problem is the gas supply or the gas valve. Work on gas-carrying parts is for a qualified heating engineer.
- Smell gas? Close the gas valve, open windows and doors and call the gas emergency service straight away.
Applies to
Itho Daalderop AquaMax DV, HR24 Tapklasse CW 4 black, HR30 CW5 black, HR36 Tapklasse CW 5+ black, HR42 25L black.
Fault code 15 on other Itho Daalderop series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- 15 on Base Cube, 24/35 (16L) cw 5, 30/35 (16L) cw 5: Gas valve lockout does not open.
Matching parts
Itho Daalderop 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 15, the part involved is usually in the category: gas valve.
This message does not point directly to one faulty part. If the code keeps coming back, view the Itho Daalderop parts:
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 Itho Daalderop boiler fault code 15 mean?
Gas valve does not close.
How do I fix fault code 15 on an Itho Daalderop boiler?
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 Itho Daalderop fault code 15?
That depends on the exact cause. In the Itho Daalderop parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code 15 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 Itho Daalderop boiler faults and codes at a glance →