View Full Version : Receiving "Comm Failure" message, no heat
12-26-2011, 01:27 AM
I have a TS40B Wall Model Thermostat from Beutler. Right now my aircondition/heating wall display is showing 'comm failure'. Can anyone tell me what this is and how to reset? Right now, nothing is working, Heat, Fan, SmartVent...I would be thankful for any insights.
12-26-2011, 09:01 AM
It is a communicating thermostat that controls the HVAC system through 2 wires, the D+ and D- (or D1, D2) wires rather than they traditional multi-wire bundle used in old low-voltage control systems. The thermostat has lost communicating ability with the equipment it controls. Either continuity has been lost on one of the data wires, or if it is a new thermostat you may have bought a thermostat and paired it up to equipment for which it is not compatable... Good hunting!
tinknocker service tech
12-26-2011, 10:17 AM
could be a simple fix or not
i once spent 7 hours and two of them with tech support to find a problem with a comm system
give the installer a call and have it looked at
12-26-2011, 02:17 PM
Thank you for your responses. The thermostat unit has been in place for the last two years and operating normally; so that would lead me to believe it's compatible.
I was able to find the User manual online, and it makes reference to "Hold Settings", which was the last button to the right. Which is now no longer there or even indicating its available. The system shows it's off, with no option of turning it back on to "run" or "hold".
I've tried contacting Beutler, but they seem more interested in setting a appointment, then walking me through the settings. I'll keep playing with it, but may have to fork up some dough. I have four girls and can't keep them in a house broaching the 50's.
Thank you again. Any additional thoughts or suggestions would be grateful. My question to Murphy, "Did you really have to do this on Christmas Day?"
12-26-2011, 04:51 PM
Update: Note to all who may run into this issue with their own TS40B Wall Model Thermostat. Turn all of the power off, flip your main breakers. Initially, I tried just flipping the breakers for the HVAC, but nothing changed. I decided to flip the main breakers; everything came back online exactly as it was before.
12-26-2011, 07:20 PM
Ah, the kids angle. Just FYI, my wife grew up in a house here in Massachusetts, with no central heat in it until she was 5-years old. The house is over 100-years old and so yes, others survived quite nicely in the home, despite the New England winters. Your kids are a lot tougher than you thank they are!
12-26-2011, 09:07 PM
I'm sure her father would appreciate the nag factor. LOL
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