12-27-12, 11:28 PM | #1 |
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thermostat troubleshooting
hi,
decided to replace old mercury thermostat with Honeywell TH2110D1009 Pro 2000 Single Stage 1-Heat/Cool Thermostat from amazon.com (sorry not allowed to paste links apparently). Old thermostat had only 2 wires (R and W = so only heat, no fan). Connecting new thermostat was a breeze the problem is the heat does not start. Had a couple of calls with Honeywell customer service and i am still not sure what's going on. So if some one can explain what i am seeing : 1. Using a voltage meter, i am measuring ~ 25 VAC between R and W. According to Honeywell, the thermostat i bought only works with 750ma so that's why it does not work and i have to get a 24 VAC one. That some what makes sense. 2. If i by-pass the thermostat and manually connect the R and W wires directly, which is all the (mercury) thermostat is doing anyway at the end of the day, the heat still does not turn on. So i am very confused. 3. I checked the fuses box. The apartment has a gas furnace in the basement ( i think it's one for heating and hot water) and hot water is working fine. any help is appreciated, thanks in advance Last edited by pipodnmy; 12-27-12 at 11:31 PM.. |
12-28-12, 03:04 PM | #2 |
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It doesn't really make sense, but does it work if the old thermostat is hooked up again?
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12-28-12, 03:12 PM | #3 |
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you are right - it does not. but the sure thing is if i connect the lines manually, the heat furnace should have fired up and it definitely does. I have a technician come to see it in a couple of hrs. I think the hot water and heat may be separate.
I discarded the old thermostat (a bit careless) but there is no way it would have worked either given that direct connection does not work now. thanks for you reply |
12-28-12, 04:53 PM | #4 |
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Alright, I'm getting a little confused. In the first post you said manually connecting the wires didn't turn the heat on, but now it seems it does?
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12-28-12, 05:34 PM | #5 |
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12-28-12, 05:40 PM | #6 |
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Well, its good to hear its working. Did he explain what he did?
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12-28-12, 05:44 PM | #7 |
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that's the shady part. he said he just fixed some part but his english was very bad and combined with his attitude did not understand much of what the problem was. i know he did not much in a few minutes but that's all.
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