Vaillent VCW T3W
- Thread starter sven72
- Start date
the most probable thing is that the overheat button has popped out. It's on the right hand side of the controls housing behind the pressure guage. You have to remove the front panel to get at it and even then it's a bit awkward to press back in. You may have to reach in with a long screwdriver to press it. You can get at it from underneath but it's trickier if you don't know where you're headed.
presuming the boiler is cold, just turn the power off at the spur, take lower front panel off and start feeling quite near the wall for a small rubber cover. when you find it, press it
It is on the right hand side, fairly high compared to the panel you took off, and when you press it, you have to press from right to left.
then follow normal start up presence.
It is on the right hand side, fairly high compared to the panel you took off, and when you press it, you have to press from right to left.
then follow normal start up presence.
Press the red button to fail the pilot light. Re-ignite the pilot light after 3 minutes and see if that works. There's a microswitch connected to the pilot light button that might not be contacting properly even though the pilot is on, failing and re-igniting sometimes gets it back to normal. If you have no joy with that follow DP's instructions.
N
namsag
weargas . Can you remember the first time you where ever caught with that fault.
Turned off for a service relit pilot and thought WTF has happened here all i did was turn it off.
Turned off for a service relit pilot and thought WTF has happened here all i did was turn it off.
ditto 
Yeah, a phonecall to vaillant tech and a red face!
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