Honeywell RTH4300B, I have only two wires red and black, when attached to the corresponding terminals the on/off manual switches the heat , however it is bypassing the thermostatic switching... any suggestions, THANKS!!

https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html#post268211

One wire should go to Rh and the other to W