Recent: How can I mend my Panasonic SA_PT470 dvd player?

Mend > Home Heating Systems

Mend Valiant Combi Boiler Water Running Cycles

Problem with hot water on Valiant Combi Boiler?

When we are running hot water through our valiant combi boiler, the water cycles though hot and cold and never stabilises to a constant temperature. This has been happening for a few days.

On running thought the diagnostics on the boiler it would appear that the problem could be the main switch board, but I not am a plumber so I really have no idea.

Does my diagnosis sound feasiable? If so, Is this expensive to repair?

Paul Rostron
September 2007
ValiantValiant Combi BoilerHeating, Home Heating SystemsWater Running Cycles
100% its the dhw heat exchanger, remove it, pour neat fx2 in the connection holes, put in bucket, pour boiling hot water on top, leave 4 1 hr, refit

kris
September 2007
OK so on futher investigation i was wrong, my thoughts are now heading toward the DHW heat exchanger or the microswitch....... any confirmation would be gladly recieved

Paul Rostron
September 2007

Automatic Answer

We may have found other answers which could help you.

Click here for Water Running Cycles

Related Questions ...

Mend hot water running cold
1

vaillant 221H hot water problem?

When running bath water the water starts out hot and then goes cold and then hot again. When watching the main... [Read more]
Mend boiler heating repair
3

What is wrong with my boiler?

Hi, I have a Ferroli Optima boiler (not sure of the exact model) controlling my heating and hot water. For th... [Read more]
Mend boiler fault ignition
4

does anyone know hy my vokera linea 24 cycles on and off?

my boiler lights the goes out every 5 or 6 seconds on heating and hot water flow and return clear pump running... [Read more]
Mend boiler heating flame
1

the flame on my modina 102 boiler cycles on and off?

the flame on my boiler keeps going on and off every couple of minutes and also the water in my flat goes hot a... [Read more]
Mend heating Valiant Ecotec pressure

Leak on overflow pipe?
Mend boiler heating temperature

water not getting really hot?
Mend hot combi not run hot

hot water on valiant combi does not run very hot?
Mend boiler pressure heating

Constant rise of water pressure in valiant combi echo plus boiler?
Mend control panel replacing

Valiant timeswitch 130 control panel?
Mend boiler pressure heating

Valiant F22 low pressure problem?
Mend boiler heating combi

How do I remove Valiant analogue 130 timer from Turbo max combi boiler ?
Mend combi diverter valve heating system

hot water on combi?
Mend boiler heating pressure

Valiant combi boiler 2005 installation?
Mend boiler combi heating

Valiant combi compact boiler -low water pressure?
Mend pressure heating turned

valient eco pro pressure gauge?
Mend boiler central heating fault

Hot water and Central Heating Not coming on?

How to mend ...

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

Related Categories

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

Topic

Valiant Combi Boiler: Hot Water Fluctuating?