Robertshaw Thermostat Manual

I have a Robertshaw 300-252 thermostat programmable digital I installed last fall. He worked hard during the winter, but when I went to turn on my a / c it will not work. I lost the instructions and this thermostat is more so I can not find an online manual.

It came with this thing green fuse and he said if you're a c / does not work, connect the two connectors. I W, RH, RC, Y, and G.

I do not know which two to connect.

When I put on the SR and LR, the fan ran, but something in my basement making sounds scary, so I cut it.

Your son is your R hot wire, wire feed, your weight is for gas, Y is switch your cooling and G is for your fan. That's what you want to do, take the R wire and disconnect it and just touch your Y. This should kick you out on the condenser, having someone tell you if it works. If it works, then your AC will work. You want your son RY Wireless-G and W wire to where they all go if it does not do anything, then try to get your son R 2. If this does not always work, then you have to make a jumper and jump your son R 2 together and then it should work. Good Luck!