How to mend ... Switch Boiler Heater

I keep getting D4 popping up, whenever I switch off the boiler heater?

What does d4 mean, after switching off the heater?

How can I upgrade my Worcester 350 heater control?

We have a Worcester 350 combi-boiler with a UT2 single-channel time switch to control the central heating. Tem... [Read more]

Glow Worm Compact 80E switches on without the tap !?

This morning I heard clicking and went to the boiler and noticed the domestic water heater switches on and off... [Read more]

heating on all the time ?

hi i have a woscester greenstar ri that wont switch off ie when boiler in timed mode the heating is still on w... [Read more]

heat but no hot water?

I have a potterton prima boiler and the heater and hot water timer is Honeywell. The Heating is stuck on re... [Read more]

Sunvic Select 107 Problem, Help Please?

I have a Worcester Bosch Boiler 28Si, with a Sunvic Select 107. The boiler produces hot water ok, but when the... [Read more]

how can i fix my home boiler or heater?

I have a problem that my home heating system is not working.It was working on one day and then heard a blast s... [Read more]

Ferroli Modena 80E Heating problem ?

I have a Ferroli Modena 80E in my flat, about two weeks ago the heating stopped working. The hot water is stil... [Read more]

How can I make my radiator to generate it?

My radiator does not bring up heat when I put it on recently. The boiler that is controlling both the radiat... [Read more]

low boiler pressure?

My boiler specification is potterton netaheat model 6/10. The problem with the boiler is can't fire up to heat... [Read more]

myson apollo 40?

hi ppl. can some body plz help. boiler pilot is lit but main boiler flame not kickin in when i switch the time... [Read more]

Worscester Bosch 24i Junior, Ignitor light flashing?

I had my boiler fixed and tested last march and everything seems to be working fine with it. However this ligh... [Read more]

ideal istor (no power)?

I have an ideal istor boiler that stopped working last night both the hot water and CH, not even hot water on ... [Read more]

IDEAL CLASSIC BOILER ONLY STAYS ON FOR 2 MINUTES?

My Ideal Classic FF280 will only stay on for 2 minutes then cuts out. I have recently been having problems ... [Read more]

vaillant 242 boiler,no hot water,no indicator light,please advise???

hi,i am looking for some help i have a vaillant 242 boiler and the hot water as been going off for days at a t... [Read more]

Immersion Heater Not Heating?

Since my gas boiler went wrong (waiting for warmfront to replace), I have been making do with my electric imme... [Read more]

Why does my boiler not turn off?

Hi. I have a Potterton Ultra DV40 boiler and also a Megaflo unvented water heater. When the boiler is heating ... [Read more]

Why would the pilot light keep going out on Smith GB100W Natural Gas Boiler?

Good Morning, Yesterday morning we woke to no heat after installing a brand new heater (replaced twice in t... [Read more]

NO HEATING AND NO HOT WATER?

I HAVE A POTTERTON PUMA 100E. MY PROBLEM IS I HAVE NO HEATING OR HOT WATER I HAVE FOLLOWED THE HEATER DIAGRA... [Read more]

Pottertton PUMA 100 - Heating timer?

I have a bolier that used to work ok with the Bolier set to standby and the Heating switch set to timer. Now... [Read more]