Bob, I am running a 3.5 ton R-410A A/C unit with heat pump. I live in Florida, so don't have much use for a furnace or serious heating system. Up until I bought my house in 2005, I always had a mercury-switch type thermostat that required no batteries. As a matter of fact, I didn't know that my digital thermostat in my house ran on batteries until they ran down and I had to replace them to get the system going againl. A year or so later, my thermostat completely failed and I had to buy a new one. It also required two AA batteries and wouldn't do anything until you installed them. It was not programmable. Now I have the VIP which requires four batteries and I'll tell you what, it won't do anything without them.
Darrin Darrin Porter Senior Technical Engineer United Ocean Services, L.L.C. 601 South Harbour Island Boulevard, Suite 230 Tampa, Florida 33602 (813) 209-4247 (office) (813) 744-0011 (cellular phone) (813) 242-4849 (fax) darrin.por...@united-mar.comm<mailto:darrin.por...@united-mar.comm> ________________________________ From: blindhandyman@yahoogroups.com [mailto:blindhandy...@yahoogroups.com] On Behalf Of chiliblindman Sent: Monday, August 10, 2009 4:09 PM To: blindhandyman@yahoogroups.com Subject: Re: [BlindHandyMan] speaking of thermostats Darrin, I have had the same digital thermostat for over 15 years now at least, it does not require batteries to run or maintain memory of how it is programmed. It operates from the low voltage (24) supplied from my air handler. It will shut down when brown-out voltage conditions exist and time delay restart when power is restored from loss of voltage or low voltage. This is basically a standard therm that is digital. You really might want to check with your service guy why you have what you have. I really think there is something wrong with what you have and how it operates. When my display goes blank, that is telling me the breaker tripped or a fuse is blown and there is no power to the unit in my basement. ...................bob [Non-text portions of this message have been removed] ________________________________ Attention: This email and any accompanying attachments constitute confidential and/or legally privileged information. If you have received this email communication in error, please notify the sender immediately and delete the message and any attachments from your system. [Non-text portions of this message have been removed]
