I have a Honeywell, RTH7600, RET97 programmable thermostat
. No problem for 2 years. Had to change to new batteries and after changing to heat and temp, nothing happens. I hear the clicking for the heatpump to come on, but nothing.
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: Yes. I turned it to off while we were gone 5 days. Turning it to heat this morning and then screen went off, no data. I changed to new batteries and reprogrammed heat and auto fan and ip to 70 but nothing.
JA: Do you plan on doing the work yourself?
Customer: If possible unless this requires an HVA tech. Our heat pump is over 20 years old. We have had 2 minimal problems in the past. No problems all summer with AC on from May to last week.
JA: Anything else we should know to help you best?
Customer: Not sure, we are an all electrical house and everything is working. Should I check the individual breaker?