EMM-3 Replacement?

[potroastman]

I have a Honeywell EMM-3 which is a 3 zone hvac controller. I was troubleshooting a thermostat problem today and looking at this circuit board. It turned out to be a thermostat issue so everything is fine now. But I noticed on the EMM3 one of the resistors was quite hot to the touch, and slightly browned around the edge. Laser thermometer says it is about 160 degrees F.

Should I replace this thing or is this 'normal' to have some heat on this part? It's been working fine, and is from 2007.

 

[Fitter30]

There's a couple on ebay boards show signs of being hot like yours. Never worked on or seen one. Looks to be wire wound they can run hot 250°c. If you se all the numbers might try looking it up. Here a place that might have nos and reman.

https://www.radwell.com/en-US/Buy/HONEYWELL/HONEYWELL/EMM-3

 

[Sponsor]

 

[potroastman]

Thanks for the info. Looks like this is probably normal. They left a square opening on the board most likely for heat. As long as it's working I'm going to leave it alone.