Vokera Central Heating Problem

agrinnall

On my central heating controller there is a Holiday button that you press then set the number of days and the temperature, so it's very simple. On yours it appears that it's set by choosing the Mode of Operation, but I'm unsure how you actually do that.



https://www.plumbingforless.co.uk/files/ww/merlin/VOKERA%20Energy%20Saving%20Controls%20-%20Feature%20Brochure.pdf


then scroll down to Room Thermostat Range.

[Deleted User]

Thank you again agrinnall. I could not see any setting to select - only the timer, date, time and temperature etc. As it is mentioned in the link I'm sure you are right and it must be possible.



I'm not going away on holiday just yet and hopefully will be able to find out. If I could be sure that the E 82 Error Code would not recur it would be all right but, although remedied with good help from the forum here, it seemed to happen 'out of the blue'. If I had not been at home the heating would have been on 'full' for the whole time.


It was really strange because I have TRV's on all but one radiator and it even bypassed them and heated to over 27 degrees - maybe more because that was the top scale on my thermometer.


Thank you again.


Crimson

DoaM

If the holiday is before winter, there's always the nuclear option - turn off the mains power to the boiler. It being off wouldn't be an issue as there'd be little to no chance of frost/freezing pipes.

[Deleted User]

Thanks DoaM. I wondered about that but was worried in case the remote wall timer would not reconnect with the boiler or the boiler would not work normally after being off for 10 days or so.

Would that be a safe enough option?

Crimson

giraffe69

Have you googled Vokera and E82. Suggests it is a communication error.

[Deleted User]

giraffe69 wrote: »

Have you googled Vokera and E82. Suggests it is a communication error.

Thank you giraffe69. Yes - the Error Code was a communicatior error and, with help from the forum here, it was resolved - ? A temporary interruption in communication. I'm anxious about it happening again if I am away and not here to remedy the problem - the heating would be on all radiators full 24 hours as it also bypassed the TRVs.

In the five years I have had the boiler I have had to have the receiver renewed completely twice so now on to the third one - although the first replacement was under warrenty. It was expensive to have it replaced the second time. The actual boiler service itself has been fine at annual service - 'Gas Safe.'

Thank you for replying.

Crimson

missile

I had a Vokera boiler, with a temperamental / difficult to use control unit. Changed it to hive.

[Deleted User]

Thanks missile Post # 18. I have wondered all along if the Vokera remote control unit was a weak part of the system as the boiler itself does not seem to be a problem.

Crimson

psychic_teabag

I'd second the suggestion of just turning the heating off (via the controller). No reason to worry about the boiler not coping with going unused for a period : wouldn't expect to use any heating during the summer anyway.

The hot-water-only mode just means that the room thermostat will never ask for heat.

EDIT: just had a quick look at the manual for the boiler. I see it's a combi boiler, which I think means it heats the water on demand.

That says that on the front of the boiler there's a mode selector, so you could use that to turn off the room heating, rather than doing it via the remote controller.

(Says there's an anti-blocking feature, which means it will run the pump briefly every day even if there's no heating. Fancy stuff !)

psychic_teabag

Deleted_User wrote: »

the heating would be on all radiators full 24 hours as it also bypassed the TRVs.

Err... that doesn't sound good. TRV's should be entirely mechanical, with decision happening at the radiator. The radiators should close off the hot water circuit when their local environ is warm enough. Then if there is nothing removing any heat, the circulating water will reach a threshold and the boiler should turn off.

I think there must always be one radiator without a TRV, so as long as that can extract the heat the boiler is putting in, the boiler will stay on.

My boiler has a thermostat which controls the temperature of the ciculating water, but I just have it on max. (One gas chap visiting recommended turning it down, but I wasn't sufficiently convinced by his argument.)