Remeha fault code A.02.33
Fault code A.02.33 on a Remeha boiler (including Calenta Ace and Tzerra Ace) means: Automatic filling of the system takes too long. Automatic filling is stopped. 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 A.02.33 on a Remeha boiler indicates: Automatic filling of the system takes too long. Automatic filling is stopped.
Fixing fault code A.02.33: 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
Remeha Calenta Ace, Tzerra Ace, 24C CW3, 25DS Double Solo, 28C CW4, 28C Combi CW4, 35DS Double Solo, 39C CW5, 40C Combi CW5, 40L Combi CW6.
Fault code A.02.33 on other Remeha series
The same code does not mean the same thing on every series. Check the rating plate to see which series you have:
- A02.33 on Calenta Ace-Matic, 30C CW4, 35DS, 40C CW5, 40L CW6, Tzerra Ace-Matic: Fault: maximum fill time exceeded.
Matching parts
Remeha 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 Remeha-series: Tzerra Ace · Tzerra · Avanta Ace · Avanta · Calenta Ace · Calenta · Quinta Ace · Quinta.
This message does not point directly to one faulty part. These are the parts that most often fit this appliance:
- Remeha pressure sensor for Calenta and Calenta Ace etc. € 39.47
- Remeha siphon gasket bottom for Calenta Ace and Avanta Ace etc. € 8.27
- Remeha gasket for gas/air unit (Calenta Ace and Avanta Ace etc.) € 10.35
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 Remeha boiler fault code A.02.33 mean?
Automatic filling of the system takes too long. Automatic filling is stopped.
How do I fix fault code A.02.33 on a Remeha 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 Remeha fault code A.02.33?
That depends on the exact cause. In the Remeha parts overview at Instalpunt you will find the current price and stock for each part.
Can I fix fault code A.02.33 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 Remeha boiler faults and codes at a glance →