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boiler shutting on and off when thermostat goes on

in Gas Heating
Hey guys, every time my thermostat turns on my boiler and pilot turn on and off. I have a Weil McLain gas water boiler. I replaced the relay switch and the problem still occurred. I have 4 zones and one boiler in my house. The house heats up but it just goes on and off many times as the heat is on. Also the green power light and the red light are on at the same time at times.
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Comments
The simplest thing would be that your hot surface igniter (glow plug) will light but than not sense the fire and shut down the gas valve.
That would be a first guess.
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