
Are you wondering what to do about your faulty Vokera boiler?
There’s nothing so frustrating than having to put up with a faulty boiler, and especially if you’re worried about the cost of repairs, you may turn to the internet for alternative quick fixes rather than calling an engineer.
Vokera boilers are one of the most common budget boilers for landlords and first time buyers, as they get the job done for significantly cheaper than some of the premium boiler brands such as Worcester Bosch.
They are manufactured in Italy and because they are built to a cost, they are generally made from cheaper components with shorter guarantees.
Luckily, there ARE some fixes you can try for Vokera boilers, which is why I’ve made life a little easier by listing 5 of the most common faults and fixes you can try at home, below.
1. Vokera Linea fault code 92/93 & 95
The Fault: These particular fault codes above indicate that your condensate pipe is either blocked, failing to drain, or frozen. This is particularly common when the condensate pipe runs outside.
The Fix: if the pipe passes to the outside of your property, try to thaw it out with hot water. If necessary, you can even try undoing it at the boiler and drain to a bucket underneath. Press the reset button and watch your boiler fire back to life.
2. Vokera Linea fault code 10 (Vokera Compact code A01)
The Fault: The above codes mean that there is an ignition failure with your boiler, in which case you can probably hear your boiler sparking but failing to ignite.
The Fix: Test the voltage going to the gas valve; if there seems to be no voltage to the gas valve, it’s most likely a problem with the PCB, which in most cases will need replaced. However, if voltage IS going to the gas valve, it’s either the gas valve itself or the solenoid valve.
3. Vokera Linea fault code 40/41 (Vokera Compact code A04)
The Fault: The codes above mean your boiler’s pressure levels are low. Sometimes this can happen if there’s a leak, or if an air bubble has found its way into the system.
The Fix: Locate the filling loop underneath your boiler and top up the pressure to 1 – 1.5 bar. For more information, read our blog ‘What to Do if Your Boiler Loses Pressure’. We’ve even included a handy video!
4. Vokera Compact fault code A03
The Fault: The above fault code means there’s likely a fault with your boiler’s fan; it may have become worn down over time.
The Fix: Test it out with a volt meter; if power levels are correct, it’s definitely time to replace your fan. If there’s no power, check the wiring from the PCB.
5. Vokera Flowmatic boilers: no hot water
The Fault: With older Vokera Flowmatic boilers, one of the most common faults is finding that there’s no hot water, water is lukewarm, or the water only gets warm if your heating is on. This problem can be isolated to a faulty diverter valve. For more information, read my ‘Ultimate Guide to Diagnosing a Fault Diverter Valve’.
The Fix: In most instances, the diverter valve can be replaced, or you may want to try stripping down and replacing the diaphragm washer. Please note that these old boilers may come up with numerous errors month after month. If this is the case, it’s a sign the boiler is approaching the end of its life and needs replaced.
From a heating engineer’s perspective
As with any boiler, you have to assess your downtime and costs when thinking about repairs. For instance, if your old Vokera boiler is unreliable and you’re having to take time off work, plus spending £320 on a repair, only for it to break down again a few months down the line, when do you say ‘enough is enough’?
Once, I was called to repair an old Flowmatic boiler where another engineer had originally replaced the diverter valve two weeks earlier.
It turned out the boiler now had electrical problems, caused when the connections had been disturbed when replacing the valve. This resulted in water dripping onto the PCB, making the electrics short out.
The cost of replacing the PCB wasjust too expensive, and the boiler was then replaced.
Conclusion
Sorry you’re having problems with your faulty Vokera boiler, but I hope this blog has been of some help with diagnosing the problem. We have lots of useful videos and guides on our website if you need further help.
However, if you have any specific questions about faulty Vokera boilers, feel free to drop me a comment and I’ll do my utmost to answer you in a timely fashion.

Hi my boiler is only 2 yrs old. At first it sounded like a kettle was boiling inside the boiler. I then switched it off and sounded better when i put it back on. Now it displays ao1 and thiers no heating or hot water
My boiler is doing the same thing and is around the same age. Did you solve your problem?
My boiler is two years old and doing the same thing how did you fix it
Hi, check the flexible pipe that drains excess water, mine was blocked which made the boiler make this boiling sound you mention. It stumped all the boiler guys that come out to look at it.
This is what mine is doing and now leaking water
Hi Eileen, I have the same issue with my boiler just like Asma. The kettle sound or bubbling sound is when your condensation drain pipe is blocked.
The guide here is great and the fix to this issue is to thaw the condensation pipe with hot water or you can disconnect the pipe from the boiler to release the blocked water which is what I do and have done for the past 3 years. This issue usually occurs mostly during winter like every 2 weeks. I would say this occurs around autumn, winter and spring. It’s a little less during summer and autumn and only occurs every month or two.
Hope you get sorted.
Hi Asma, I have the same issue with my boiler. The kettle sound or bubbling sound is when your condensation drain pipe is blocked.
The guide here is great and the fix to this issue is to thaw the condensation pipe with hot water or you can disconnect the pipe from the boiler to release the blocked water which is what I do and have done for the past 3 years. This issue usually occurs mostly during winter like every 2 weeks. I would say this occurs around autumn, winter and spring. It’s a little less during summer and autumn and only occurs every month or two.
Hoperhaps you get sorted.
My boiler is boiling like a kettle have been told it is air how do i fix it.
Shake the condensing pipe
Shake the condensing pipe this will fix a boiler that sounds like its boiling
boiler overheats, the water can be heard boiling violently, the boiler cabinet even bangs. I
What does it mean if the green light flashes but the boiler is not working
Hey there! I know this is kind of off topic but I was wondering which blog platform are you using for this website? I’m getting tired of WordPress because I&1;#278ve had problems with hackers and I’m looking at options for another platform. I would be fantastic if you could point me in the direction of a good platform.
Vokera Linea fault code 03 when I take the combustion cover off the boiler fires up when it’s put back on and cliped in place boiler won’t fire up any thoughts
My boiler is doing the same did think out the problem
Boiler drippjng water switched it off no heating or hot water
Hi
The boiler is heating our hot water but we can’t get the radiators to heat up. The knobs on the radiators are all on but just no heating. HELP please x
Did you get this fixed, we have the same problem
Boiler htg hw ok s plan vales both open pump rung system full no air locks rads cold .
Did you get an answer? I have the same problem
hot water runs hot and cold alternately
Hi i have got a vokera boiler it comes on and off dont know how set the dailer flame sign on the dailer stays on even when turn it off thanks
Did you find out what was wrong? I have same fault.
fan and pump running boiler wont fire up fitted new a p r switch cost me 56 pounds was told by enginner that was fitted it myself if i open spring clip on cumbustion cover boiler fires up need help dont have money to waste
Vokera combo boiler not working. Sold red light constantly on. No hot water or heating. Had plumber out he has no idea.
Vokera boiler not working – no heat or hot water. Red light on – occasionally green light comes on and water heats for a minute. What can be wrong
Boiler shuts down & reset appears, happens every few days
Hello there. Ours doesnt seem to be performing any differently to before this started and there is certainly no red LED displayed but it has started flashing 53/54/55 & 59 which I seen via the service manual error code table is an internal fault, call engineer. Thats all it says… so Ive no idea. Then as quick as it shows, it goes! Comes back maybe the next day or day after but like I said, heating is still fine, as is water! Any help gratefully received.
Hi my hot water is luke warm and the diverter valve has been changed water still not hot told needs power flush can you help
It could be as simple as a dodgy diverter valve motor or the hot water sensor is out of calibration, does the pressure gauge needle bounce up and down when the hot water is running if so the domestic heat exchanger may need replacing or cleaning
Hi I have had a V 25s installed and it makes a boiling sound and shuts down reading AO1 the bell and water sign also, my installer is telling me I have a leek because I have gunbarrell pipes but the pressure on the boiler and hot press is have way between 1 and 2
If your boiler is making a boiling or banging noise it’s down to a lack of circulation worst case scenario a blockage, if you’re lucky it could be a dead or weak pump or a faulty diverter valve, does the noise happen on hot water and heating?
My boiler is about 1 month old but the vokera controller has an error code E82 this is messing with the heating and the schedule
I would love some assistance with this
If you have E82 appearing on your display follow the below instructions.
1. Press and hold the room stat jogger for 3 to 5 seconds.
2. Timer symbol, standby symbol and party mode will flash along with NODE
3. Scroll jogger wheel anticlockwise two clicks and PL should appear on the screen flashing.
4. Press the jogger wheel.
PASS will flash.
5. Turn the Jogger wheel clockwise until 18 appears in the screen.
6. Press the jogger wheel to accept code.
COUP C04 Should show on the display.
7. Press the jogger wheel to accept.
The display should show 4 numbers with two dashes in the display.
8. At this point go to the receiver and press and hold the button on the receiver until it flashes GREEN AND AMBER.
The room stat should now show 4 numbers plus the two dashes should now read 01 to 5 and so on.
9. Press the jogger wheel on the room stat to accept.
COUP C04 Will appears.
Now leave the room stat for several minutes and the display will revert back to the main screen.
Now test the room stat by putting the stat in to party mode and joggle the stat up and down pressing the joggle wheel to select desired temperature you will then see if the receiver and room stat have paired.
Depending whether the room stat is calling for heat or not calling for heat will determine the way the LED’s are flashing on the receiver unit.
Not calling for heat (OFF) LED’s will be solid Green with flashing amber.
Calling for Heat (ON) LED’s will Green red and amber
Hi
There is an error message A84 or AB4 where the air temperature usually shows.
The manual is no help!
Thank you
i have the same A84 code on my remote, cant find any refrence to it anywhere, but i believe that it is a fault in the transmitter unit that is plugged into the boiler. this is the second remote unit i have had breakdown on my boiler in about 4 years. the transmitter is stuck to the boiler casing, which i have found out , is not suppose to be done as the heat can damage it, and the metal body can cause transmission problems.
Boiler occasionally makes a banging sound, what is the problem?
Hi, my boiler vokera compact 29a is flashing red/green and shows code a03,,and no hit water or hot radiator,,,any idea,,,what it could be? All help appreciated,,,thanks in advance,,,
I have exactly the same problem,now who got an answer………………hmmmmm
my vokera mynute boiler is flashing code 73 can anyone tell me what is the problem
Vokera Unica 36i 3 years old.Starts up then after it’s been on a while it cuts out showing Error code A07.I keep resetting it and it keeps doing the same thing.
My Volkera Mynute 35HE run well for two years and has then been nothing but trouble. It’s now 7 years old and I’m so fed up I’m replacing it. Won’t be replacing it with a Volkera though!
Bg been to replace wireless thermostat which now works however when relay switches to turn on boiler doesn’t always fire up I can here it switch but nothing is it a fault with the PCB
500 quid ive spent on repairs to this compact 29a boiler its not even 3 years old had allsorts of problems mainly ignition failing! Absolute piece of shit boiler and thats me putting it nicely
I have a bikers boiler and the flashing tap symbol keeps coming on …any ideas what this means …thanks jo
Sorry vokera boiler
Hi,
I’ve have just installed Vokera boiler compact 25A, but
I can not get to operate the heating. There is a symbol P displayed. There is a hot water working perfect.
Please advise me of what to do?
Thank you
Central heating works fine. Hot water often not hot enough (washing up or for shaving) and runs warm/hot then cold for 60 second, then warm/hot again, then cold for further 60 seconds e.g. Having a 5 mins shower would prob have 2 x 60 seconds periods of cold
Hi
Boiler, around 2 and a half years old, has solid red light and flashing orange light. Water seems to be running cold after a while too but other than that no change to service. Don’t want to let ‘problem’ worsen. Any advice please?
Thanks
4yr old Vokera LPG boiler been told it’s a blockage
as no hot water It’s regularly serviced and the engineers
just say a Vokera is a load of rubbish so wondering
what to do as every plumber is out dealing with
excess work
Hi my vokera linea28,I had power cut when it came back on,the display was showing co,when I switch off at wall then back on the CH works for 10 mins then goes back to co,hot water working OK can you tell me how to fix
Hi I wander if you could help, had a brand new combi compact a fit a few months ago not used it much as house is empty tried to put heating on sat, It wouldnt fire up and kept displaying , A02 , which in the manuel it says, limit thermostat fault. thanks for any help
Hi,
My Vokera Vision 30C boiler works fine on central heating but I have issues with the hot water.
If I run the basin tap, it comes out at 60C. but if I run the bath tap (more flow rate)it drops back to 40C. so its only warm water!!
With a low pressure problem, how can you tell whether its more water that needs to be let in, or whether the expansion vessel needs more air pumping in? Both of these will increase the pressure.
Please can u help me my boiler is flashing an A03 code my boiler is only 2 yrs old can u help me
I have a Vokera Maxin 24e boiler that is dripping water. Heating engineer who came yesterday has diagnosed a faulty distribution manifold but I have a nagging feeling his diagnosis might be incorrect. I few weeks ago the hot water ran cold whilst having a shower. I turned heating back on and then I got hot water (this only happened once). Is the dripping water and the loss of hot water connected? I am selling my house (close to contract exchange) and I don’t fancy having to install a new boiler.
my boiler cuts off when there is a high wind
The boiler is showing letters CO what does this mean?
vokera boiler is in the basement (old boiler was there from day 1 when we moved in), don’t ask me why. because basement is so cold (circa 1800’s built house), the boiler is running on frost protect to protect itself from the obvious. to the extent it is running 24/7 and the bills are high!! I have been advised to fit a radiator in the basement to raise temperature and maybe the boiler will at some point manage to switch itself off. also various timers linked to the boiler have been connected but just don’t work. previous boiler I had was a Worcester Bosch only came on overtime if the temp fell below 0 degrees. we are stumped. apart from moving the boiler into the house (costly job) anyone else experienced the same thing?
Hi my compact 25a is displaying A09 code dose anyone no what this is and can it be fixed
Hi my Volans boiler keeps going off. Showing fault 52. Cam you help please