Original message
| ThotWorks
 |  "HoneyWell T8600D Thermostat - No Display..."
, posted Fri 22 Feb 21:14:  
The display of this unit goes blank when the oil furnace fires on (and other times as well). The T8600D is wired as a heat-only, single transformer system (1 red and 1 white wire used, with the red wire jumping the R and RC terminals). The unit does not have batteries, it uses the 24v from the system wire.
Is this a problem with the unit, or is this a standard operating characteristic for this thermostat? Any help would be much appreciated. Thanks in Advance.
ThotWorks
[this message was edited by ThotWorks on Sat 23 Feb 16:02] |
| Replies:
|
| Technician
| "Re(1):HoneyWell T8600D Thermostat - No Displa" , posted Sat 23 Feb 16:07
I believe you nee a third wire from c on the fur. to c n the t-stat. Without it you would need batteries for the stat.
|
|
|
