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Honeywell R8222k 1000 replaced with R8222N 1011...same issue
I have a customer with a nat gas fired steam boiler. I have been to the residence a few times in the past once for a bad auto make-up water feed, and once for a bad thermal roll out switch. Any I have recommended replacement to the customer as their is no hartford loop installed on it and the equalizer and connecting piping was installed in copper. The customer has agreed to do it in the spring however we are trying to limp this unit through the winter. The issue I am having right now is what I though was a bad gas valve has turned into a wiring issue. The unit has a power damper on it as well as a probe type low water cut off, and an electronic igniter. I'm having a problem with one of the relays. It was a honeywell R8222k 1000 and when tied into the thermostat wire it makes noise and sparks, I tried replacing the control with a newer one, an R8222N 1011 and it does the same thing. I followed the factory wiring diagram and everything seems to be correct... Anyone run into this or something similar.