- Messages
- 21
Sorry to be long winded but.....
Holiday Flat. 5 year old Boiler in loft space. Working Perfectly until Oct 2013
-Worcester/British Gas fit Model ZWB 7-29 CC1
Background - We have the thermo set for practically 24 hrs over 2 cycles at 15c. 08.30am -20.29 & 20.35 - 08.25am. (specific reason for this that is long winded and not important)
When we arrive into the flat we demand heat and the boiler will come on and warm the flat to desired tempertaure until 1) we turn it down 2) Will auto reset to 15c when the next cycle commences. That has been the happy process for 3 years. (Using Siemans Wireless Thermo)
Problem 1 - The boiler did not give CH demand as desired. (Co-insided with new BT Internet Hub situated right underneath the Thermo.)
If we the took the Siemans Thermo closer to the boiler it came on.
We had to take the thermo closer to boiler to turn off heat or to tell boiler the next cycle had begun or that we wanted a change in temp.
In the middle of the night the heating would come on and belt out at an incredible heat to the point that we turned the boiler off at the fuse spur to stop heat.
Result £330 gas bill where normally for that period it would have been £100.
Solution - Change Thermo Unit under guarantee as poss. fault and move Thermo into a different room away from BT Hub. No fault found on boiler
Outcome - Boiler responded at distance from the replacement Thermo. However, randomly we could not get heat when desired and the random heating sessions during the night continued.
Solution - No faultt found on boiler. The Thermo 'seemed to be working' - In sheer frustration We changed thermo to a Danfoss Wireless.
Outcome - Happiness for 1 month.
Next problem.
Again random times where no heat provided on demand and again random night bursts (which all ended when the morning cycle started) Thermo was useless to try to control these blasts.
Having rechecked the Thermo, and it was working fine, had several conversations with Worcester we determinded that it must the the PCB that had gone. This has been replaced. 2 weeks later we have had no repeats of the night time blast (so far) BUT we still have random times were we cannot get heat on demand.
Example. Yesterday. We upped temp to 19c mid afternoon. Lovely. We went out for dinner at 6.30pm Came home at 9pm and requested 22c in a room with an amibient of 17c. The wireless thermo kicked in, the receiver receives and lights up and the boiler does nothing.
What we do know
The BT Hub does not effect the problem. We turned the thing off for a month.
The only other thing that is wireless in the flat is the printer
The heat on demand issue only seems to be on the 2nd cycle 20.30pm to 08.29am (99% of the time)
All pressures checked and are perfect
Frost measures etc checked and double checked and are ok.
Me and my trusty Gas Man are at our witts end. Please no comments about cutting our loses and changing boiler. There is a huge legal complexity with about a £10k price tag that is stopping us doing that. (listed building, leasehold issues etc. changing flue position etc etc
Does anyone have any ideas please? We are willing to try anything.
Holiday Flat. 5 year old Boiler in loft space. Working Perfectly until Oct 2013
-Worcester/British Gas fit Model ZWB 7-29 CC1
Background - We have the thermo set for practically 24 hrs over 2 cycles at 15c. 08.30am -20.29 & 20.35 - 08.25am. (specific reason for this that is long winded and not important)
When we arrive into the flat we demand heat and the boiler will come on and warm the flat to desired tempertaure until 1) we turn it down 2) Will auto reset to 15c when the next cycle commences. That has been the happy process for 3 years. (Using Siemans Wireless Thermo)
Problem 1 - The boiler did not give CH demand as desired. (Co-insided with new BT Internet Hub situated right underneath the Thermo.)
If we the took the Siemans Thermo closer to the boiler it came on.
We had to take the thermo closer to boiler to turn off heat or to tell boiler the next cycle had begun or that we wanted a change in temp.
In the middle of the night the heating would come on and belt out at an incredible heat to the point that we turned the boiler off at the fuse spur to stop heat.
Result £330 gas bill where normally for that period it would have been £100.
Solution - Change Thermo Unit under guarantee as poss. fault and move Thermo into a different room away from BT Hub. No fault found on boiler
Outcome - Boiler responded at distance from the replacement Thermo. However, randomly we could not get heat when desired and the random heating sessions during the night continued.
Solution - No faultt found on boiler. The Thermo 'seemed to be working' - In sheer frustration We changed thermo to a Danfoss Wireless.
Outcome - Happiness for 1 month.
Next problem.
Again random times where no heat provided on demand and again random night bursts (which all ended when the morning cycle started) Thermo was useless to try to control these blasts.
Having rechecked the Thermo, and it was working fine, had several conversations with Worcester we determinded that it must the the PCB that had gone. This has been replaced. 2 weeks later we have had no repeats of the night time blast (so far) BUT we still have random times were we cannot get heat on demand.
Example. Yesterday. We upped temp to 19c mid afternoon. Lovely. We went out for dinner at 6.30pm Came home at 9pm and requested 22c in a room with an amibient of 17c. The wireless thermo kicked in, the receiver receives and lights up and the boiler does nothing.
What we do know
The BT Hub does not effect the problem. We turned the thing off for a month.
The only other thing that is wireless in the flat is the printer
The heat on demand issue only seems to be on the 2nd cycle 20.30pm to 08.29am (99% of the time)
All pressures checked and are perfect
Frost measures etc checked and double checked and are ok.
Me and my trusty Gas Man are at our witts end. Please no comments about cutting our loses and changing boiler. There is a huge legal complexity with about a £10k price tag that is stopping us doing that. (listed building, leasehold issues etc. changing flue position etc etc
Does anyone have any ideas please? We are willing to try anything.
