Search results

I am after some advice - my Central Heating has a Sunvic 207xls 2 ch programmer installed as well as a Programmable Room Thermostat in the hall downstairs. Can anyone offer any advice on the best practice for setting these items up to maintain efficiency on my system. I currently have the...

This has been checked by 2 separate electricians how could that voltage differ from when in Heating only mode to Heating/DHW combined mode? Also to prove it is not the wiring if I have it in Heating only mode so the valve has Port B fully closed and only Port A open with the pump running if I...

This is what I cannot get my head around when in Heating/DHW combined mode the rad's get red hot but the minute the valve moves to the Heating only position the pump continues to run until the controller turns the program off but it is only circulating cool water!! This is a new valve and head...

S I have been away for a few days so only just getting back to this: After measuring the gas usage at the meter the boiler appears to be on the Medium Settings which is 16.12kW I have removed all the TRV heads and opened up all the LSV's and checked the TRV pins to be free, set the pump to...

Thanks In item 2 the balance is none existant but are you saying to NOT fully open all LSV's - if so what position should they be in? In item 6 when you mention hold the thermometer right against the tape do you mean the infrared one as that is the only thermometer I have - or should I buy one...

Ok, this is the test plan I have put together for later - is this the best way to troubleshoot further? 1. Measure the gas usage at the meter with no other gas appliance running - only have a gas hob and fire in the lounge (pilot light out) to ascertain the setting of the boiler Min / Mid or...

Thanks I feel we may be getting close to the root of the issue - I will measure the gas usage of the boiler at the meter tonight when I get home from work to see if it is indeed set to MAX. I have set the pump to Speed 3 (max) and it has made no difference - reducing the flow/return difference...

Thanks I wouldn't mess with anything Gas related myself Do you think though we are getting close to the issue that the boiler output is set incorrectly?

I have just been looking at the data label on the boiler and it shows all the figures for MIN - MID - MAX (output, gas burner pressure etc) and it should have an arrow to indicate which it is set to but there is no arrow - do you think it could be set too high say MAX and needs adjusting down?

The maximum watts of all the radiators in the house is 8548watts or 9kW - the DHW Cylinder is 1050mm x 450mm - 140 litres so would that take around 3kW to heat? How can I tell if the heat of the boiler has been reduced or does that happen automatically. I see what you mean about when the CH...

The hot water gets past the valve and down the pipe that goes towards the radiators. The pump is on the middle setting.

It is not closing off both ports A & B - this has been checked by removing the valve and inspecting which ports are open and it is working as expected. All the 3 valves have been the same so it cannot be that all 3 are faulty

There is a change in the noise of the pump and then the boiler goes out after about a minute and the pipework goes cold eventually - the pump keeps running throughout the whole test

Correct in "cheating" using the valve - I tried turning the boiler stat down with the DHW cylinder stat right up to keep both the heating and DHW calling for heat to keep the valve in the mid position with the head on When CH only is called I do indeed get 240v on the Valve's grey and white...

In answer to your questions: When in CH only position on the valve the pump runs and when the boiler goes out the pump keeps running until the programmer switches off the CH It would appear that the boiler is switching off due to quickly overheating and I stood by it for 20 mins and it did not...

If the Cylinder Stat is at 80 and the boiler stat low the valve remains in the mid position and I get CH and the water heats as well but the DHW tank never reaches 80 - well not before we are done with the heating. The electrician has confirmed all voltages are as expected with all status of...

Just been speaking to my neighbour who has been in her house since it was new and her programmer is a Danfoss 102E7 (she said they all had the same as she new someone else at the time in another house with the same programmer - moved on since) so it would appear that mine has been changed to the...

Checked and it is set to Pumped

It is hard to say for sure but I believe it did when we first moved in but for the last 9 yrs it has been like this - it was only really noticed when I turned the DHW Cylinder stat down from 80!!