I have a energy star rated VT1001 talking thermostat installed sometime in the early to mid 2000s. This morning it began to periodicall speak the words “two sixty four” (264). I cannot find anything to explain to me what this means. I have located and obtained a user manual for a smilar thermostat from the same manufacturer but this gives no explanation.
When this occurs then the light button no longer iluminates the lcd display. However, pressing the report button does illuminate the display and immediately produces the phrase 264 as discribed above.
Can anyone here tell me what this message means?