Hot Water Boiler Not Heating Multiple Problems Old Lady Really Cold House 76°F

I am on a no heat service call where a hot water boiler isn’t heating up the house. I find multiple issues. Thermostat opens zone valve. Yet the end switch doesn’t activate the boiler. Afterwards the pumps come on, unfortunately the boiler isn’t sending power to the ignition module. The chimney spill switch is tripped.
Therefore I replace the zone valve and reset the spill switch.