EWC Controls Forum

I could see this happening if your furnace is a forced hot water system. My previous residence had an oil furnace that needed to maintain a minimum core temperature when otherwise not in use, so it could supply heat immediately upon demand. Yours sounds like a forced-air duct system, yes? And the fa...

I have a damper where the servo motor isn't working. You hear the motor running, but the spindle isn't turning and the arm isn't moving. I think the gears have either ground up or got disconnected. I ordered a replacement MA-5P from PEX Supply, only to find that the part is discontinued and no longe...

Update - I ordered, received, and installed a Honeywell TH4110D, and all works well. It has a separate terminal for W and O ("heat calling" and "heat system selection" respectively), which the Hunter 44360 doesn't have (but has a terminal that combines W and O). If I wanted to st...

Ok, upon further investigation, the Hunter 44360 won't work as a Zone 1 master with the -2D. What I have found is that the B should read 24V, but only as a return feed from the t-stat (whereas the R1 is feeding 24V to the t-stat). I went ahead and ordered a Honeywell TH4110D, but if I wanted to stic...

I have control module EWC-ST-2D. First of all, I can't find any documentation on it. The closest I can find is for the EWC-ST-2E (and -3E). Are there any differences between the -2D and the -2E? Secondly, the Zone 2 t-stat doesn't appear to be doing anything regardless of what it is set at. In parti...