Central Heating Frustration - General DIY Discussions - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > DIY Forum > General DIY Discussions


Thread Tools Display Modes
Old 11-25-2007, 10:02 AM   #1
Join Date: Nov 2007
Posts: 8
Rewards Points: 10

Central Heating Frustration

I'm sat in a freezing cold house, frustrated as my Central Heating really has me & the Plumber baffled.

In the Kitchen is a Gas Protherm Combi Boiler for my Hot water & Heating.
The Boiler is operated via a Horstmann Centaurstat themostat located in the dinning room.

The Centaurstat is programmed to turn the heating on at four different times: morning, daytime, evening & night at different temperatures.

In the morning the radiators are hot as programmed which is great.
However the problem is in the evening when the radiators never seem to get warm. I manually try turning up the temperature on the centaurstat, this overriding the programmed temperature of 22 dc, thinking this will fire up the boiler & provide heat, but it doesn't & the boiler doesn't seem to fire up. I wondered if maybe the communication between the boiler & the themostat was faulty.

Sometimes the radiators do come on, they start to become warm then suddenly after about 10 - 15 minutes they cool down when neither the themostat or the boiler has being touched.

I don't know whether it might be the themostat that is faulty, the boiler or the radiators.

The pressure in the boiler is as it should be between 1 & 2 bar (-as stated in the instruction manual).

Last night I decided to do nothing & see if the heating would come as programmed for 4pm. It didn't. It was 9pm before the radiators started to get hot.
Funny how it works on the morning but not on the evening.

I know I will have to call someone out to find / fix the problem eventually, although I'm reluctant because I was ripped off last week by another engineer who didn't fix another problem, he made it worse. What a month I'm having!
This is proving to be an expensive end to the year.

If anyone can provide some insight into this problem I'd very grateful indeed.


P.S. I don't believe this, I've just touched the radiators & they're piping hot!?
The heating has decided to come on now


SassySue is offline   Reply With Quote
Old 11-26-2007, 12:25 PM   #2
Join Date: Mar 2007
Location: Long Island, NY
Posts: 11,188
Rewards Points: 5,336

Does the thermostat have batteries? If they're weak the boiler could not work properly. Another issue is the programming in the thermostats. Check to see if they're programmed correctly.


Ron6519 is offline   Reply With Quote
Old 11-28-2007, 03:03 AM   #3
Join Date: Nov 2007
Posts: 8
Rewards Points: 10

Central Heating

Yeah I've checked the Thermostat batteries & programme times already.
Think it might be an electrical fault on the boiler, a lose connection. I have to turn the boiler off & On to get it to fire up when the thermostat says so.

Thanks for taking the time to reply,
SassySue is offline   Reply With Quote
Old 11-28-2007, 03:11 AM   #4
Join Date: Nov 2007
Posts: 948
Rewards Points: 1,274

What is the setback temp? IE - the temperature you want the house to "cool off" to when you're not scheduled to be home?
LawnGuyLandSparky is offline   Reply With Quote
Old 11-29-2007, 06:46 AM   #5
Join Date: Nov 2007
Posts: 8
Rewards Points: 10

Setback Temp

The set back Temp is set to 18c when not at home.
Funnily enough the heating seems to be working ok now. Comes on as timed to the correct temp.
I think it was due to switching the boiler on & off a couple of times last week.
Fingers crossed it stay working.
Thanks for taking the time to reply.
SassySue is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Trane XE80 Heating Question, Please help!!! Stephen1977 HVAC 3 01-30-2007 06:34 PM
Central heating 3 way valve KevinO Plumbing 1 05-10-2005 11:09 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1