![Had to remove WiFi thermostat and replace with original one, now it heats instead of cools. Any help much appreciated. : r/thermostats Had to remove WiFi thermostat and replace with original one, now it heats instead of cools. Any help much appreciated. : r/thermostats](https://i.redd.it/c6k7zxfkhzh71.jpg)
Had to remove WiFi thermostat and replace with original one, now it heats instead of cools. Any help much appreciated. : r/thermostats
![Advice on how to wire a 4 wire RGWY wifi thermostat to an old hvac with no c wire? - Home Improvement Stack Exchange Advice on how to wire a 4 wire RGWY wifi thermostat to an old hvac with no c wire? - Home Improvement Stack Exchange](https://i.stack.imgur.com/j5dG1.jpg)
Advice on how to wire a 4 wire RGWY wifi thermostat to an old hvac with no c wire? - Home Improvement Stack Exchange
![No power message , no c wire want to run the green wire as the c wire but can't figure out the wiring . I put the green In the c and No power message , no c wire want to run the green wire as the c wire but can't figure out the wiring . I put the green In the c and](https://preview.redd.it/42bf62ef37a81.jpg?width=640&crop=smart&auto=webp&s=3a6c240912886514216b69ba92713405ac93fc34)
No power message , no c wire want to run the green wire as the c wire but can't figure out the wiring . I put the green In the c and
![Want to install a smart thermostat but I have no C-wire (only 2 wires to thermostats). First pic is the thermostat/ pump control panel, second is the panel inside my hot water/boiler Want to install a smart thermostat but I have no C-wire (only 2 wires to thermostats). First pic is the thermostat/ pump control panel, second is the panel inside my hot water/boiler](https://preview.redd.it/722js43s6t781.jpg?width=640&crop=smart&auto=webp&s=7f98b2d2b6a1da41f2d70a67931df59010d818a3)