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How can you reset a siemens rde20.1 underfloor heating system? temperature has hit 30 degrees and won't turn down?

Posted by Anonymous on

  • Brendon Ranum
    Brendon Ranum Jun 11, 2016

    I had an RDE20.1 stuck on and temp reading 28.5. Fixed by first replacing battery (battery symbol was on), then changing the desired temp to above 28.5 (30) which made it switch the relay on (triangle came on, but no clunk), then set desired to below 28.5 (10) which made it switch the relay off again (triangle off and this time the successful clunk was heard!). Worked fine after that.



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I had an RDE20.1 stuck on and temp reading 28.5. Fixed by first replacing battery (battery symbol was on), then changing the desired temp to above 28.5 (30) which made it switch the relay on (triangle came on, but no clunk), then set desired to below 28.5 (10) which made it switch the relay off again (triangle off and this time the successful clunk was heard!). Worked fine after that.

Posted on Jun 11, 2016


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SOURCE: siemens underfloor heating sdosent work

check your circuit breakers to see if the floor is getting power to it. Consult your operation guide to see if there is an internal fuse.

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SOURCE: Celestial split system air conditioner

I am a repair man and have had this problem quite a few times, check that the remote is set to heat and 30 degrees.usually a symbol like the sun,very similar to cool easy to mix up.If the a/c is set to heat the indoor fan will not start till outdoor unit has heated coil.

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