Originally Posted by Wayne1
Here is a look inside the 120 VAC temp controller
I do not have a 220V unit to compare. ere109, if you want to send me yours or come over with it, drop me a PM and I'll be happy to open it up and post some pictures.
I would hazard a guess that anyone who wants to change the 220 to 110 would have to change the transformer at a minimum.
Thanks! Those transformers are $2.62 each from futureelectronics.com
My guess is the 230vac model is using pn bv302s09015 for the transformer. If that is, indeed, the case, and the relays are the same, should be a direct replacement.
Specs for the 110 transformer:
Secondary voltage: 9+-10% vdc
secondary current: 167 mA
Max no load voltage: 9.7 vdc
Rate power: 1.5 va
The relays are from hongmei relay in china, finding info about them is more difficult.
Would someone with the 230vac model care to crack it open and post the numbers and letters from the top of the 2 black boxes located on the board?