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3 posts

Wannabe Geek

#272958 27-Jul-2020 15:47
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Hi, new to this forum.  Generation 1 HRV system has error code ER01.  HRV say it is a temperature probe and they can replace it for just over $100.  I want to find the probe and see if it just needs a clean.  Any suggestions on what it will look like, where it is likely to be in the system, or any other pointers.  Thanks.

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96 posts

Master Geek


  #2529710 27-Jul-2020 16:57
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I've recently replaced ours. I paid HRV $75 for the part alone.. so $100 fitted is not tooo bad, our local quoted $300.




Get in the roof, and find your fan unit (if more than one, it's the one with the control box onthe side). 


Open it up (take a Phillips screwdriver) and you'll see a data cable with a RJ11 plug, that is fed into the fan unit itself.


You should be able to gently pull it out of the fan unit, but I'm guessing it's not a clean thing, but a dead thing.. 




3 posts

Wannabe Geek

  #2529718 27-Jul-2020 17:08
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Thanks for that.  Does the system still work with the error? 




96 posts

Master Geek


  #2529727 27-Jul-2020 17:19
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3 posts

Wannabe Geek

  #2529733 27-Jul-2020 17:36
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Thanks for your help.

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Wannabe Geek

  #2532568 1-Aug-2020 09:49
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Thanks to Sheldon for the note. 




I figured out the temperature probe is actually DS18b20, you can find one from trademe for less than $5. Fit it on a RJ11 or connect to the old one. Then you are good to go. 


I tested on mine, and it is working now.

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