Maryland Climatemaster compressor doesn't start

Discussion in 'Maintenance and Troubleshooting' started by xrbbaker, Feb 29, 2020.

  1. xrbbaker

    xrbbaker Member

    Hello - I have a Tranquility 30 TE. It's about 8 years old or so. While the settings can be fickle, it's been a champ. Got a call from local utility company that my bill is going to be 96% higher this month. Huh? Then I notice that my unit has been running on Aux heat. It goes through stage 1 then 2, but the lt1 and lt2 never changes. Never puts out any heat. It then flips over to Aux. No compressor. No wonder the high bill are coming in!

    I have an hvac guy coming over Monday for a look. Thought I'd post here in case anyone has any idea. It is throwing NO fault messages on the thermostat unit. I've reset the breakers as that sometimes seems to reset things. No effect. I took the cover off and I notice the LED2 light has a slow red flash all the time, whether the unit runs or not. Don't know if that means anything.

    Any ideas? Thanks!
  2. mtrentw

    mtrentw Active Member Industry Professional Forum Leader

  3. xrbbaker

    xrbbaker Member

    Hmm. Don't know how to do that. I'll just sit tight until my guy gets here tomorrow. Thanks!
  4. mtrentw

    mtrentw Active Member Industry Professional Forum Leader

    I’d suggest you have this manual pulled up as a reference unless he is a dedicated geothermal guy.
  5. xrbbaker

    xrbbaker Member

    Yep - He's s Climatemaster installer. Thanks very much. I'll try to pop a note back when I learn the problem.
  6. xrbbaker

    xrbbaker Member

    Problem solved! I would never have figured this one out. There is a small condensate unit next to the Climatemaster. One of the wires had broken off inside of the wire nut. My service guy figured this out in about 15 minutes. He plugged in his laptop and looked at the overall system schematic. He said aha! The system thinks the compressor is on but we know it's not. I wonder about the condensate unit... 10 minutes later it was working fine.

    Once again, I found out that most problems are cause by factors outside of the CM unit. For example, low water flow, low water temp, now bad wire.

    Thanks again for all the help!

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