How to mend Honeywell Programmer Heating

1

Potterton PRT2/ EP2002 C/H always on (unless at temp)?

I have developed a fault on my Potterton EP2002 Programmer following short circuiting and blowing a fuse. The ... [Read more]

2

Potterton Programmer not controlling stat?

I developed a fault on my Potterton system as a direct result of trying to change the in room stat (Potterton ... [Read more]

1

Honeywell ST7100 programmer goes blank when RUN selected?

10 minutes after I came home yesterday(28/12/2012) the power cut . Since then the central heating/hot water ha... [Read more]

1

Converting to Y Plan system?

I am converting my heating system to a Y Plan using mainly Honeywell parts for the wireless room thermostat (H... [Read more]

1

do i need a new dt20rf programmer?

the digital display has gone blank and does not control the heating. the boiler still works and can be control... [Read more]

Baxi Bermuda 401 ?

having just fitted a new electrical programmer after old one kept clicking and flashing and not lighting up ce... [Read more]

heating is erratic sometimes on then goes off fitter says system is overhea?

fitter seems to think system is overheating due to eitherpump grundfos1550 or programmer honeywell st699 being... [Read more]

I have a Honeywell CF wall mounted programmable thermostat thats gone rouge?

My programmer seems to have a mind of its own. It is switching the heating on much earlier than the programmed... [Read more]

Central Heating not coming on ?

Only get the central heating to come on when running the hot water,it's an old system with pre- lagged cylinde... [Read more]

1

Programming Honeywell CM921?

Hi: The heating engineer installed this unit during installation of a new boiler. This is a 1 day wireless pro... [Read more]

6

Why can we only get heating when hot water on also now(Dual programer)?

We recently needed to replace head valve due to pump over run problem.(Boiler is Potterton Profile) On putting... [Read more]

3

No heating,but have hot water?

I have an Ideal Boiler elan 2 50F, the boiler comes on when hot water is required, however heating does not. R... [Read more]

Hot water but no heating?

Hi i have a fully pumped two valve system which until recently has been working reasonably well, I say reasona... [Read more]

1

Worcester Oil Boiler?

I have a Worcester Danesmoor SLPJ 20-25 oil fired boiler which is fitted with a twin channel programmer and Ho... [Read more]

1

new programmer fitted?

i have replaced my old honeywell programmer with a new grasslin QE2 programmer and now i have no heating

10

Potterton Promax 24HE - No Central Heating?

Since the weather turned colder a couple of weeks ago we have been unable to have heating without the hot wate... [Read more]

2

Honeywell 3 port diverter valve?

I have a diverter valve which doesnt switch to hot water when i request it to do so from the programmer. Hot w... [Read more]

2

How can I fix my Apollo 15/30B wall mounted gas boiler?

APOLLO 15/30B WALL MOUNTED GAS BOILER -I have recently had a new consumer unit fitted My honeywell programmer... [Read more]

9

Boiler fires up when demand for hot water but doesn't when demand for C/H?

I have a Potterton Netaheat Profile 80e boiler, Honeywell V4073A mid-position valve, Honeywell ST699B programm... [Read more]

1

how to rewire from scratch my central heating system?

we have a baxi bermuda back boiler central heating system that is twenty years old now. we have replaced the p... [Read more]