I'm having a problem with a new wireless thermostat and wonder if I could get some advice.
The thermostat is a Carrier TSTATCCPRF (thermostat) and TSTATCCREC01 (receiver). The manual is at http://www.xpedio.carrier.com/idc/groups/public/documents/techlit/im-tstat-10.pdf or http://tinyurl.com/2fntx3 , or see http://www.commercial.carrier.com/commercial/hvac/product_technical_literature/1,3069,CLI1_DIV41_ETI4922_PRD753,00.html or http://tinyurl.com/yvxdah for the entire set.
The furnace relay on the other end is a Honeywell R845A (manual at http://customer.honeywell.com/techlit/PDF/60-0000s/60-2481.pdf or http://tinyurl.com/yskwj4 ). This is for an oil fired furnace.
I have the T T connections from the relay going to the W and R connections on the thermostat.
Now, when I first hooked up the thermostat, everything worked fine for a while. Then the relay at the furnace started buzzing. This happens even if the transmitter and receiver are right next to each other. When I put back the old thermostat the problem goes away. I got a replacement thermostat of the same model and the same problem happens, so I don't think it is defective.
The back of the manual mentions that with a 4 wire system, adding a 270 ohm, 10 watt resistor across the Y and C terminals at the furnace will provide more power, but I have a 2 wire system and I'm not using the C terminal.
Thanks for any advice you can give on this problem.