How to mend ... Boiler Thermostat

Ferroli Optimax He Plus 38C hot water works but heating dosent?

I have a Feroli optimax he plus 38c boiler. I have replaced the room theromastat as the old one was the wrong ... [Read more]

heating comes on by itself?

my thermostat is off but the boiler lights up and warms the house-controls are set on continuous -therefore th... [Read more]

c h boiler heats HW supply only,no central heating?

My system is a fully pumped central heating installation, with room & cylinder thermostat. Could the motorise... [Read more]

The hot water stopped working with my Vokera Maxin boiler. Any ideas?

Vokera Maxin Boiler - Hot water stopped working. I only get hot water if the heating is on and the thermostat ... [Read more]

i have a vokera linea 28, the hot water is fine but the radiators wont work?

i have a vokera linea 28, the hot water works fine but the radiators wont come on, the thermostat on the wall ... [Read more]

wiring danfoss 103 timer to a danfoss ret230p thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

wiring danfoss 103 timer to a danfoss ret230p thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

Wiring a Danfosse 103 timer to a Danfosse RET 230P Thermostat?

I have a Sunier Duval SD 620 combi boiler and have a Danfosse 103 timer ~ old but reliable ~ Im fitting a Danf... [Read more]

vaillant vc gb 221 h boiler cycling?

My boiler fires up as normal for about 15 seconds then switches off (pilot still on)cuts back in 10-15 mins la... [Read more]

Britony Systems II from C&M never turns off ?

Even when the thermostat is set to off the boiler keeps running with temp showing at 90 degrees. The pilot lig... [Read more]

sime format 30E hydronic heating boiler not working?

The thermostat is ok, green light keeps on at front penal, can hear the click of a relay on PCB after a while ... [Read more]

No H/W from Ariston boiler unless Rads are on!!?

I have read a few forums that say this problem is almost deffinately the diverter valve, however my plumber ha... [Read more]

Drayton rf1 wireless system problem?

Recently moved home. I have followed all the Q&As on this site regarding the rf1 system in my new home. I pu... [Read more]

Ferolli combi boiler - I pressed the wrong button?

I was trying to fix the water temp on my parents' central heating boiler and touched the + and - buttons and t... [Read more]

boiler?

i have recently fitted a new hot water tank thermostat and a pcb on the boiler, the boiler now fires up as and... [Read more]

myson Apollo 50B?

the boiler is not firing up when the thermostat reaches the temperature for the heating to kick in and also no... [Read more]

Help with central heating wiring please?

Have just fitted a Danfoss actuator in airing cupboard and a new digital thermostat in the hall. Problem is th... [Read more]

my worcester 24i rsf boiler radiators getting to hot ?

radiators getting to hot and tripping out. do i need a overheat thermostat replacement. and can i fit it myse... [Read more]

How can I repair my vokera 20/80rs flowmatic boiler ?

My boiler suppies hot water for about 2 seconds and then runs cold have plenty of pressure built up but thermo... [Read more]

After about 1 hour my boiler is starting to make a loud banging noise, ?

After about 1 hour my boiler is starting to make a loud banging noise, i have switched thermostat off for 10 s... [Read more]