How to mend ... Dhw Mode Boiler

Halstead ace high will not reset?

Hi, I have just serviced a Halstead ace high 30kw combi for a customer. I closed the gas valve to check the ... [Read more]

Can anybody advise why Flexicom 35CX goes into state S53 when in DHW mode?

The boiler works fine for central heating and DHW for sink taps and shower, but when bath tap is used the boil... [Read more]

ravenheat csi85a ch problem ?

dhw working fine but boiler cycling when in ch mode.boiler will light and go out after about ten seconds and g... [Read more]

vaillant vcw 242 eh?

After DHW pipe is closed boiler start sparking again (with no fan start).After safety time boiler goes into bl... [Read more]

Ferroli Modena 102 luke warm hot water?

Any help have Modena 102 sometimes when 1st time calling CH the gas flame is very low if flame doesn't spread ... [Read more]

Flexicom 30sx - boiler error?

When there is demand the Glowworm Flexicom 30sx cycles through burner on, then state codes 98 and then 97 befo... [Read more]

halstead ace he 30 dhw problem?

Hi All, I wonder if there is someone out there who can help with a very strange fault on a Halstead Ace HE... [Read more]

boiler keeps anticycling?

I have a Halstead Ace High combination boiler,the boiler keeps shutting on/off either in ch mode or dhw mode ... [Read more]

halstead ace high boiler problem?

after my son has spent 20mins or so in the shower,shortly after there is a hissing sound, and hot water comes ... [Read more]

ravenheat csi85(T) 780series?

boiler works fine on dhw setting butwill not work on ch mode,i have tested thesummer/winter switch and is ok.h... [Read more]

My boiler Vaillant ECOmax 824E needs to be reseting every morning.How can I?

ECOmax 824E needs to be reseting every morning.After reseting boiler operates in heating mode and DHW as norma... [Read more]

Pump is sorted.How do i clean dhw heat exchanger Vaillant part no: 065053?

Pump is sorted by now. I have back hot water and central heating. But some problems with hot water persists. ... [Read more]

glowworm betacom 30c fault?

in either ch or dhw mode, boiler runs thru sequence properly and gas ignites. After 5 secs gas goes out and af... [Read more]

ace high boiler problem?

replaced diaphram and diverter valve service kit , ch working ok , in dhw only mode both central he... [Read more]

Halstead High Ace - DHW not turning off?

After turning off the DHW tap, my Ace High boiler stays in Hot Water mode - this also heats up the radiators. ... [Read more]

sime boiler, format 80 c DHW problem?

boiler works fine in heating mode , but runs for only a few secomds when DHW is drawn, then water runs cold, a... [Read more]

Vokera Linea 28 combi boiler DHW problem?

My central heating works fine on the boiler, but the domestic hot water (DHW) does not, barely gets above 30 c... [Read more]

baxi combi instant 105e?

inheating mode temp. goes to 50`c then turns off . i have changed both temp. sensers. burner stays on in DHW m... [Read more]

Isar HE30 problems?

We have the Ideal DH30 Isar combi heater. I am having a problem with it recognising the thermostat for the c... [Read more]

potterton performer 24kw HEcombi?

Hello ,is there any quallified heating engineers out there who may know wat this fault is. no hot water,the p... [Read more]