Question about Water Heaters
Boiler does fire and cuts out with fault code f31
Posted by Anonymous on
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Posted on Jan 02, 2017
Prior to writing the above fault I had asked the owner to turn the boiler temp controller , for the heating side, down just a fraction . I was phoned this morning to tell me that the boiler had stayed on allnight with no fault light . After consulting with the plumber who fitted the system it appears that there might not be a room stat ,
Posted on Dec 01, 2008
Maximum temp exceeded on ntc1(thermistor),,,either clean out heat exchanger,power flush of my first option replace thermistor...
Posted on Feb 02, 2009
check to see the time clock is set with the clock symbol. there are three settings on analog clocks I , O and clock the I setting is constant running, the O setting is off and the clock setting is timer.
also try setting the thermostat up higher to see if the boiler fires.
Posted on Mar 30, 2009
SOURCE: code f28 what isit?
According to the user's guide, the fault code means that the boiler failed to start after 5 attempts. Here is the manual where I got the information. I would confirm the codes with your particular model. I am presuming that the codes would be standard for all their models. Source(s): http://www.vaillant.co.uk/stepone2/data/…
Posted on Mar 10, 2010
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