Lightning - I have just checked that and it is indeed loose - I turned the thermostat back up and the CH flow pipe again gets very hot but return pipe is cold.
Vaillant Ecotec plus 831 - swapped diverter valve, now no CH
- Thread starter watson306
- Start date
Lightning - I have just checked that and it is indeed loose - I turned the thermostat back up and the CH flow pipe again gets very hot but return pipe is cold.
Sponsored Links
You have air in the system
I did wonder - The only thing is when I try to bleed the rads I now only get water.
Whats the best way to tackle this?
8.4 Test programs
Special functions can be triggered on the appliances by
activating various test programs.
These programs are given in detail in the
Table 8.5.
• The test programs P.0 to P.6 will be started when
“Power ON” is turned on and the “+” key is pressed
for 5 s. The display shows “P.0”.
• Press the “+” key to start counting the test number
upwards.
• Press the “i” to operate the appliance now and to start
the test program.
• Press “i” and “+” simultaneously to exit the test programs.
You can also exit the test programs by not
pressing any key for 15 minutes.
Display Meaning
P.0 Bleeding test program. The heating circuit and hot
water circuit (combination boiler only) is bled via the
automatic air vent (the cap on the automatic air vent
must be loosened).
P.1 Test program where the appliance is operated in full
load after successful ignition
P.2 Test program where the appliance is operated with
minimum gas volume (ignition gas volume) after successful
ignition
P.3 not available
P.4 not available
P.5 Test program for the safety temperature limit check;
appliance heats up by by-passing a regulating shutdown
through the flow regulator until the shutoff temperature
of 97 °C is achieved.
P.6 Filling test program. The diverter valve moves to the
centre position
Special functions can be triggered on the appliances by
activating various test programs.
These programs are given in detail in the
Table 8.5.
• The test programs P.0 to P.6 will be started when
“Power ON” is turned on and the “+” key is pressed
for 5 s. The display shows “P.0”.
• Press the “+” key to start counting the test number
upwards.
• Press the “i” to operate the appliance now and to start
the test program.
• Press “i” and “+” simultaneously to exit the test programs.
You can also exit the test programs by not
pressing any key for 15 minutes.
Display Meaning
P.0 Bleeding test program. The heating circuit and hot
water circuit (combination boiler only) is bled via the
automatic air vent (the cap on the automatic air vent
must be loosened).
P.1 Test program where the appliance is operated in full
load after successful ignition
P.2 Test program where the appliance is operated with
minimum gas volume (ignition gas volume) after successful
ignition
P.3 not available
P.4 not available
P.5 Test program for the safety temperature limit check;
appliance heats up by by-passing a regulating shutdown
through the flow regulator until the shutoff temperature
of 97 °C is achieved.
P.6 Filling test program. The diverter valve moves to the
centre position
Sponsored Links
So I have set it up to go through the bleeding test program.
Do I just leave it to it - It makes a noise and then stops and all the time I am doing it, it either flashes HP or SP -is this normal?
Thanks picasso - they are both open. The CH flow out from boiler is hot which proves it doesn't it?
If it is as Lightning suggested, and I have air in the system - What is the best way to troubleshoot this - initially all rads needed bleeding after filling, but now they all just bleed water so I am unsure where to go.
Cheers
Cheers
Are the isolating valves open on the TF1?
I am pretty sure they are - but just to confirm, they are turned parallel to the pipe?
If they are turned parallel to the pipe they are open. And just to confirm the isolating valves on the flow and return are open too?
This is the bit I am not 100% confident of (because I have been messing about with it for over 24 hours, and I am now starting to doubt myself)- the flow out pipe is getting hot right up to the point of going up into the ceiling so I can only assume that is open and the other is in the same postion.
Also the tail rail in the bathroom which does not have TRV's are turned fully anti clockwise on both ends is that correct?
Did you turn the flow and return service valves off when you replaced the diverter
The flow and return service valves are open when the line marking has the same direction as the pipe.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Sponsored Links
