Recent: Fix food processor motor?

Mend Vaillant Home Heating Systems

Mend Heating, Home Heating Systems
Find out how to mend it for free.
Ask Question
Mend Heating, Home Heating Systems
Free repair help for Vaillant home heating systems

Mend home heating systems ...

Mend gas ignite hand

Kohlangaz Gosford HE fire?

My Kohlangaz Gosforth HE gas fire will not ignite, My hand set controller is displaying E56 , it will also not... [Read more]
Mend Heating, Home Heating Systems

How to fix my fireplace?

Is there any replacement part for the baxi wentworth deluxe fireplace as mine is not working any longer
Mend Heating, Home Heating Systems

Remove cover off gas boiler?

How do I remove the front cover from an Ideal Logic H30 boiler?
Mend Heating, Home Heating Systems

Vaillant timeswitch 150 analogue unit (clock stopped?

vaillant timeswitch 150 analogue unit. the clock has stopped working.
Mend worcester boiler radiators months

Worcester boiler dripping water?

Worcester boiler dripping water, can I just tight the screw? The icon next to the valve looks like radiators... [Read more]
Mend Home Heating Systems

Mend > Home Heating Systems

Mend Vaillant Hot Water Code

Vaillant Ecomax 828 E?

I currently have central heating, but no hot water. The error code is E12. Does anyone know how to fix it?

Sarah
November 2010
VaillantHeating, Home Heating SystemsHot Water Code
I have hot water but no heating unless I push the + & - buttons together error code is F30, help?

Linz
January 2011
E12 refers to water deficiency (same as E13), as you have not hot water but heating is ok, I would suggest your DHE is blocked, this would lock the boiler out as described.

Ignore the answer below, your boiler dosen't have a DHW diaphragm

Carefree
November 2010
dhw diaphram

deano
November 2010

Automatic Answer

We may have found other answers which could help you.

Click here for Hot Water Code

Mend Heating, Home Heating Systems
Free repair help for Vaillant home heating systems
Mend fault occasionally boiler

how do I rectify the fault as detailed below?
Mend boiler fault tap

vaillant ecoTEC plus boiler fault code - how to fix?
Mend vaillant off 5

Vaillant VCW-Sine18 T3WFH Lights but then goes off after 5 Min?
Mend vaillant f22 water hot

Vaillant ecotec 831 plus?
Mend hot water comes

Hot water comes and goes!?
Mend vaillant central problem

Vaillant vcw gb242 eh central heating problem?
Mend vaillant boiler pcb

Vaillant eco plus 531 boiler?
Mend bottom heating working

how to fix water pressure its down at bottom of grey part?
Mend 828e hot water

Vaillant 828E - no hot water?
Mend boiler working fire

Vaillant condensing boiler ecoTEC plus?
Mend money vaillant boiler

What does f.25 mean?
Mend vaillant f22 fault

Vaillant F22 fault?

Other models...

Vaillant ecoTEC 831 Plus

How to mend ...

Find out how to mend just about anything howtomendit.com for free repair help, information and advice.

Related Categories

Mend Convector Heaters
Convector Heaters
Mend Fan Heaters
Fan Heaters
Mend Oil Filled Radiators
Oil Filled Radiators

Mend Heating, Home Heating Systems
Free repair help for Vaillant home heating systems

Try fixfault.com to fix home heating systems.