Elco fault code 20
Fault code 20 on an Elco boiler (including Rendamax) means: Fault in gas valve control V1. 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 20 on an Elco boiler indicates: Fault in gas valve control V1.
Applies to
Elco Rendamax, R2700, R2701, R2800, R2801, R2900, R2901, R30/100, R30/120, R504.
Click a model for the parts list and exploded view of that appliance.
Matching parts
Elco 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 20, the part involved is usually in the category: gas valve.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Rendamax spark plug cap ignition/ionisation electrode old no.: EVD003 € 28.75
- Rendamax outdoor sensor 1k old no.: RTV015 € 69.26
- Rendamax sensor SPFS DHW E8/KKM8 old no.: RTV070 € 69.26
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 Elco boiler fault code 20 mean?
Fault in gas valve control V1.
How do I fix fault code 20 on an Elco 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 Elco fault code 20?
That depends on the exact cause. In the Elco parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code 20 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 Elco boiler faults and codes at a glance →