Have you turned the control from Pilot to On? Have you increased the temperature setting?
THERMOCOUPLE or defective gas valve
The flame detector on the pilot assembly is probably defective. If you do not know how to fix this, call you gas supplier and have it repaired.
The thermocouple is bad. The thermocouple is the small metal tube that sits in the pilot light flame and runs to the control valve. The thermocouple generates a very small electrical current that keeps the gas valve open. They go bad regularly. **** I would have to say to check to make sure the valve is not in the "Pilot" position. If it is then turn it to the "On' position. If it still isn't working then you may have a bad Gas Control Valve. If the thermocouple was bad the pilot light would not stay lit. If the pilot light stay lit, it is doing what it is supossed to do.
Most likely the thermocouple is bad. The thermocouple is the little tube that sits in the flame of the pilot light. Runs from the pilot light to the control valve. Very simple to replace. Costs about $6.
Electronic ignition refering to it having a sparker to light the pilot light? That just lights the pilot, there is still a thermocouple that controls the gas valve. The thermocouple is the small tube that sits in the pilot flame and runs to the control valve. To replace, you will need to remove the cover plate, gas line, thermocouple, and sparker wire as a unit and replace the thermocouple once you have it out and them re-install the unit.
Piston heater element open.
my boiler wont ignite
You might have to try pushing the button for longer, or you might have a bad thermocouple.
check for a vehicle theft system?? Is the Light Illuminated. does it stay on:::
Could be lots of things. If you have a standing pilot light, one that stays on all the time, the thermocouple may be bad. A thermocouple is a small rod that sits in the flame of the pilot light. It then runs to the gas valve. This produces a small amount of electricity that keeps the valve open to let the gas in. If the pilot light goes out it shuts the valve so the house doesn't blow up. Easy enough to replace. If the pilot light is still on and the furnace will not light, it has to be the thermocouple. Check fuses at the furnace and in the panel. Newer gas furnaces have a circuit board in them that can go bad. There are a dozen things that could keep it from working, it is just a process of elination.
you have a bad heater core