The above boiler has been excellent for 25 years. Recently, the temperature in house started to decline. The recirculation pump has been changed, and a new Honeywell thermostat fitted. Boiler fires up when the room is below 16 degrees, but cuts out when 18 reached It keeps coming on throughout the day, but never exceed 18 degrees (The same thing happened with the old thermostat) The New Room thermostat is set to 25 degrees It can take up to three hours before it starts Additional Information: I closed down the boiler and then went through the To light the boiler procedure The Pilot light lit immediately However, according to the instructions, you then turn the boiler thermostat to 5, and the main burner will start. The Main burner did not start Anyone any ideas please
Additional Information: The boiler has only been coming on every few hours. When it last came on, it ran for approximately 15 mins then went off. I turned up the boiler thermostat, and it came on again. It went off 10 mins later
I then turned up the boiler thermostat again, and it came on. When it stops, the circulation pump stops as well It appears that when the boiler reaches temperature, it shuts everything off It seems as if the room thermostat has no influence on the boiler, yet this was the same with the old thermostat (which is why we changed it) as well as the new one, so it should not be the new thermostat
Yet the system has been running for 25 years without a problem, so the wiring I would assume is correct
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