Getting heating repaired - how hard can it be?
Discussion
Our current abode has a wall-mounted Vaillant gas boiler, and a single wireless thermostat which for the past 2 years has worked faultlessly. However a couple of weeks ago the heating stopped coming on - the thermostat says "heating on" but the boiler fails to come on and heat the house.
The hot water still works fine, and I have run a test-cycle on the boiler which enables the heating to come on full blast for a limited period. So I know the mechanics of it are working fine, and the research I have done combined with a bit of button-bashing points to an "S.30" error - no heating demand from room 3/4. As no second thermostat has ever been installed this is very odd, so a call to a recommended Gas Safe engineer is in order...
Just got off the phone, and the engineer wants nothing to do with it and tells me to phone an electrician... Surely a boiler fault needs a heating engineer, not a sparky?
Can anyone shed any light on this because I'm scratching my head at the moment!
The hot water still works fine, and I have run a test-cycle on the boiler which enables the heating to come on full blast for a limited period. So I know the mechanics of it are working fine, and the research I have done combined with a bit of button-bashing points to an "S.30" error - no heating demand from room 3/4. As no second thermostat has ever been installed this is very odd, so a call to a recommended Gas Safe engineer is in order...
Just got off the phone, and the engineer wants nothing to do with it and tells me to phone an electrician... Surely a boiler fault needs a heating engineer, not a sparky?
Can anyone shed any light on this because I'm scratching my head at the moment!
If the receiver is paired correctly to the thermostat the red LED on the receiver should flash when you call for heat and a click should be heard. Then the green LED should light up.
If not, you will need to pair the two together manually. Can't remember 100% how it is done. I think if you remove the batteries from the stat, press and hold 1 + 2 until one of the LEDS start flashing quickly, reinsert the batteries and it should be paired, I think!
Silly question, but Vaillaints usually have a selector switch for summer and winter, make sure you have winter mode selected. Assuming it is a combi!
If not, you will need to pair the two together manually. Can't remember 100% how it is done. I think if you remove the batteries from the stat, press and hold 1 + 2 until one of the LEDS start flashing quickly, reinsert the batteries and it should be paired, I think!
Silly question, but Vaillaints usually have a selector switch for summer and winter, make sure you have winter mode selected. Assuming it is a combi!
switch off the boiler off by the isolating switch and remove the fuse. Take the thermostat receiver off the wall and bridge the two wires on the right,replace receiver and turn the boiler back on.If the heating works you need a new thermostat and receiver.If there is an almighty flash, I have my wires crossed and you need a new boiler.
It will be the digistat receiver relay blown - time for a new reciever. I have exactly the same set up and problem at the moment, just waiting for new parts. As an earlier poster said turn off power to boiler and join two black wires together behind digistat reciever and then turn on central heating with the radiator control to about 55C then turn it off when the house is warm enough. This will keep you going till you get a new digistat (about £80 on the net)
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