The pilot light does not go out. Got an ideal w2000 rs30 gas system boiler. If it isn't opening you can usually find a switch on the damper that can change it from "auto" to "hold open". February 1, 2019 AmbientHVACAdmin Blog No Comments. hi I had someone out to look at My Slant Fin boiler S-34 DS. A leak coming from your boiler is never a good sign. I fixed this the other day by turning the gas stop cock off and on and boom it fired up the boiler!! If you have one the first thing that happens before the burners light is the dampers opens. Boiler is leaking. It appears that everything is working corretly. With heating and water set to ‘off’ the boiler fires up all day sometimes with the pilot light being ignited sometimes not but in each case my smart meter display unit shows that gas is being used. Gas boiler. When a home heating system uses a boiler, one of the most common problems you can encounter is when the boiler’s pilot light won’t ignite. A fairly conventional system. Sometimes the gas being used is heavy and sometimes very light. There are two main issues with a pilot light burning yellow. There is no indication of what type of boiler it is other than the fact it is a wall hung boiler with Honeywell controls on the boiler. The pilot light will ensure that the gas is constantly being burnt and producing the heat we desire. The problem I'm having is that the pilot light on the boiler is lit, but will not fire even though the clock/ timer is on CH constant and HW constant, and the thermostat is on high. The boiler will not fire up if the pilot flame is not detected. There should be instructions to light the pilot inside the cover of the boiler, but if not, and you don't have the boiler manual, the VR8200 gas valve manual also has instructions: Quote: Light the Pilot Burner Flame 1. When I call for hot water or heating the boiler isn’t firing up. The first issue is that the pilot light will frequently go out and need to be relit. Boiler not firing up after reconnecting gas. I have a Utica Boiler MGB150HID that the pilot light will come on and stay on but the unit will not flame up. I can hear water moving in the pipes and the flue opens and closing accordingly. They thought (90%) they said it was the vent damper, that wasn't opening, so the boiler wasn't firing (as i understand it also signals the boiler to fire) He did not have one, and it was a long weekend so i had to wait anyway, so i ordered the part myself online, for much less money and installed and replaced it myself. take the thermostat off the wall, there are two or more wires (un-plug furnace first) connect the red and white together, tape off all the others, plug in furnace. The way these older gas boilers work means a slow and steady stream of gas is always being fed from the gas pipe. The pilot light is lit also. What is likely to be wrong and needs testing ? 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