GE Thermostat says Tamper / Malfunction?

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7 comments

  • Avatar
    Joe T

    Usually a tamper/malfunction is caused by RF interference. These units operate at 900Mhz. Do you have any wireless devices nearby this unit or in the path to the Simon XT?

    One of the really nice features of Z-Wave products is that each device is a transciever. This means that each device is capable of repeating commands to the next device down the line.

    Having said that, you could install a Z-Wave light module in between the thermostat and the panel to act as a repeater.

  • Avatar
    Kathy Bresee

    I have another thermostat between this one and the panel already.
    The last time I had this issue, someone in tech support looked at our system, and the thermostat started working again. It could have been a coincidence, I suppose.

  • Avatar
    Kathy Bresee

    Is there a way to check for a hardware failure on the device?

    At this point, I doubt it's interference in the 900mhz band.  We have no baby monitors, wireless phones or 900mhz devices in the house.  The house is still empty, and the internet Wifi is 802.11n, so it's in the 5ghz range.

    I am thinking the hardware is suspect, or there is an issue with the alarm.com connection.  Is it possible to review the previous case for this issue to see if the tech did something on the alarm.com side to wake the zombie thermostat back up?

    Thanks for your help.  I am growing increasingly concerned that the house will freeze if we don't get this reliable.

     

  • Avatar
    Joe T

    Where is the wireless router in relation to these devices? Even though it is on a different frequency, it can still have undesired effects on this equipment. Try to keep it at least 15 to 20 feet away from this equipment.

    I sent a status request to your z wave devices. This may force it to come back online.

    One thing I did notice is that these units are both on battery power. I would recommend connecting the 24 VAC wire for constant power. In the meantime, try replacing the batteries in the thermostat that is currently unresponsive.

  • Avatar
    Kathy Bresee

    The router is in the basement at the other end of the house. Approximately 35 feet of separation.

    Neither device should be on battery!
    Both have the C wire attached, so that is interesting that they show battery power.

    I will get a meter on them when I get out there.

  • Avatar
    Kathy Bresee

    Ok - had someone get out the house.  They were able to confirm that the termostat is completely dead.  They replaced batteries, cycled power on the furnace, and the display is completely dead.

    I'll call tech support to discuss returns.

  • Avatar
    Kathy Bresee

    Ok - had someone get out the house.  They were able to confirm that the termostat is completely dead.  They replaced batteries, cycled power on the furnace, and the display is completely dead.

    I'll call tech support to discuss returns.

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