Search the forum,

Central heating issue.

Discuss Central heating issue. in the DIY Plumbing Forum area at PlumbersForums.net

B

Bp89

Messages
50
For some weeks now my central heating has been switching off after about ten hours and not refiring. The next morning the heating switches back on a timer and the same issue occurs after a number of hours. Occasionally the blue power light has flashed but on resetting, the boiler fires up and the heating stays on. There is no problem with hot water which always fires up and stays on so I suspected, some time ago, the Myson CH valve which I purchased. This morning the heating did not come on so I decided to change the actuator. After switching the power back on the boiler fired up and I had CH for about 15 minutes before, much to my surprise, the boiler switched off again. I have a Bosch boiler and a Sadia water cylinder.

Help appreciated.
 
What’s the display temperature saying ?
 
Thanks. There is no display temperature but I understand it could be a blocked condensate pipe issue. The replacement of the valve actuator wasn't necessary. There is water coming out into the waste pipe under a sink. I undid the pipe underneath the condensate trap under the boiler expecting a lot of liquid and 'bits', but nothing came out of the trap. The boiler will stay on for most of the day then lockout with the blue light flashing and restart after a break.
 

Reply to Central heating issue. in the DIY Plumbing Forum area at PlumbersForums.net

Similar plumbing topics

A
Boiler starts on 2nd try
Hi, I have Worcester combi boiler which has developed a 'fault' recently. When I switch the heating on, the fire in boiler starts for a second or two and then goes off. After another few seconds it starts again and then stays on. This happens around 8 out of 10 times. I had engineer having a...
Replies
0
Views
293
Andy Jackson
A
S
Greenstar CDI Classic - Hot Water Issue
Evening All, Been having on and off issues with a Greenstar CDI classic Combi were the hot water is not heating up but only intermittently. Some days/ weeks it’s fine and works fine all of the time but on the odd occasion it’s been running cold in the following sequence. It fires up the boiler...
Replies
2
Views
455
ShaunCorbs
ShaunCorbs
N
  • Question
Water Heating Wont Work Unless Tank Thermostat Is Turned up and Down Manually!
Have a sytem boiler with unvented cylinder with 2 heating zones plus hot water in a house we moved into recently. To start with we were always amazed at the water pressure so on the odd occasion that the water was only luke warm it was easily forgiven, but over time we have come to realise that...
Replies
8
Views
373
Basher
B
S
Where is the hidden central heating pipe leak causing low pressure?
I have been facing central heating low pressure on unvented hot water RM Cylinders but can't see any leak on the PRV, expansion vessels and plasterboard celling. I have got unvented pressurized RM Cylinders hot water system with 27KW Worchester gas boiler with expansion vessels . When...
Replies
2
Views
440
losing pressure
L
T
Demand for Heating Not Firing Boiler
Hi, I have a Vailant EcoTec Boiler with a Megaflo. These are controlled by a Honeywell controller. I have one 3 port diverter, where one of the outputs goes to a 2 port diverter prior to the Megaflo (I believe this is some safety feature). I have run into an intermittent problem where some...
Replies
5
Views
224
Basher
B
Creating content since 2001. Untold Media.

Newest Plumbing Threads

Back
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock