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Weil-McLain Won't fire

Dsal
Member Posts: 2
in Gas Heating
I have a Weil-Mclain Gold CGi, 12 years old.
I woke up to cold house, to find the boiler wasn't lighting. Green Power light is on in the Control module. No flashing codes. I do have a Taco switch relay and 4 zones. It acts like I have a loose wire as when I move a wire attached to it, the boiler tries to refire. It cycles through but doesn't go to flame. The stat/circ begins blinking along with a series of clicks, then all lights go dark with the exception of the power light. I replaced the toggle switch, made sure ground wires were tight. Turned all thermostats off. Disconnected primary thermsostat and connect wires to rule out primary thermsostat in house. Nothing. I was moving the wires around between switch and relay box and it was resetting, as it would I would hold wire in place where (I am under the impression) it caused the boiler to recycle. I would hold wire in place assuming I was creating good contact somewhere(?) but it would do same cycle thru and kick off as described above. I checked connection and all seems connected... not sure where to go next.
I woke up to cold house, to find the boiler wasn't lighting. Green Power light is on in the Control module. No flashing codes. I do have a Taco switch relay and 4 zones. It acts like I have a loose wire as when I move a wire attached to it, the boiler tries to refire. It cycles through but doesn't go to flame. The stat/circ begins blinking along with a series of clicks, then all lights go dark with the exception of the power light. I replaced the toggle switch, made sure ground wires were tight. Turned all thermostats off. Disconnected primary thermsostat and connect wires to rule out primary thermsostat in house. Nothing. I was moving the wires around between switch and relay box and it was resetting, as it would I would hold wire in place where (I am under the impression) it caused the boiler to recycle. I would hold wire in place assuming I was creating good contact somewhere(?) but it would do same cycle thru and kick off as described above. I checked connection and all seems connected... not sure where to go next.
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the thermostat connection at the boiler.0
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