How to mend Vaillant 831

3

Vaillant ecotec 831 plus?

Following a F22 fault where we had no heating and only cold water from the hot water tap, I topped up the syst... [Read more]

1

Vaillant eco plus 531 boiler?

replaced pcb board f70 ,asks for password no,17, but no 17 on display ,goes from 16 to 22 .on boiler vaillant... [Read more]

Heating not working ?

I have a Valliant ecotec plus 831 I have hot water, I have tried to put it in heating mode for the heating to ... [Read more]

1

Vaillant Ecotech Plus 831 F22 fault?

I've been having problems for 3 weeks now, and on the 3rd plumber, and still not fixed. First had F75 fault a... [Read more]

Ecotec 831?

diverter valve was leaking and sticking, now the valve has been changed on power up the stepper motor moves fu... [Read more]

Is my Siemens room thermostat wired in correctly?

I have a Siemens RDJ10RF room thermostat set fitted to my Vaillant Ecotech Plus 831 boiler. The remote room st... [Read more]

My gas vaillant ecotec plus 831 boiler won't start?

My gas ran out, I put some in an got the supply back on again, I tried to restart it but it won't so I opened ... [Read more]

2

Vaillant 831 PCB issue?

The boiler is very intermittent when it comes to putting the Rads on, the hot water is fine and has no problem... [Read more]

4

Losing water?

Hi, I have a Vaillant eco TEC 831 boiler. It has needed topping up several times in the 3 years since it wa... [Read more]

2

How can I fix my plugin timeswitch?

just installed vaillant timeswitch (plug in 130). Timer is working (clock) but only calls for heat when switc... [Read more]

how do i reprogram my ecotec boiler ?

I have a Vaillant ecotech 831 boiler, I get a status code SFH and have been told I should reset all the parame... [Read more]

vailant 831 ecotec combi?

boiler comes up with f49

1

Vaillant ecoTec 831 I have hot water but no heating?

Please help! Our heating has suddenly stopped working. The display shows that the internal pump is running, ... [Read more]

2

clean heat exchanger vaillant ecotec 831?

hello, can anyone give me a idiots guide to removing, cleaning and replacing a valliant ecotrec 831 heat ex... [Read more]

how can ichange control knobs on the boiler?

vaillent831 combi boiler how to change control knobs on the boiler

1

Ignition and pump run when cold water taps are turned off?

Re: Vaillant ecoTEC Plus 831 Condensing Boiler. Ignition and pump run when cold water taps are turned off. ... [Read more]

valliant ecotec plus 831 showing F.75 fault what does that mean ?

boiler showing F.75 fault what does that mean

2

how can I fix my Vailant ecoTEC plus 831 boiler?

My eco TEC 831 is unable to maintain the pressure at 2 bars, it is 1 bar over and going into the red zone. Any... [Read more]

2

Have overfilled my valliant ecotec plus831 boiler so pressure gauge is 3.2 ?

Have overfilled boiler so pressure guage is 3.2 bars when heating is on, how can i reduce the pressure

1

Vaillant 831 with wireless 360f controller?

My wireless controller has stopped responding after changing batteries (worked for a year no problems) Gett... [Read more]