Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

whn85 menu said lockdown

Options
maybemark
maybemark Member Posts: 1,131
in THE MAIN WALL
I finally got my boiler. Yesterday it seemed fine, heating and DHW.
Last night I see it was on lockdown, saying
outlet MRHL
sensores 1 & 2
I have been looking in the manuals, ans so far can not solve the problem
any suggestion?
does someone know what my problem is?
thanks
Mark

Comments

  • wogpa67
    wogpa67 Member Posts: 238
    Options
    You are tripping on the hi limit. Here's a link to the service manual. Page 40.

    http://s3.supplyhouse.com/product_files/WHN085-Service.pdf
  • Heat_n_CT
    Heat_n_CT Member Posts: 64
    Options
    Does it happen when the boiler switches from DHW to SH? What boiler pump and speed is it on?
  • maybemark
    maybemark Member Posts: 1,131
    Options
    it does not happen when switching, I have 15 / 58, was on sppeed 2, just went to 3
  • maybemark
    maybemark Member Posts: 1,131
    Options
    I got it out of lockdown, and now it says
    now it is saying outlet sensor fault
  • maybemark
    maybemark Member Posts: 1,131
    Options
    is the outlet sensor the same as the system sensor?
  • Zman
    Zman Member Posts: 7,569
    Options
    That kind of error on a new startup usually means your boiler is air locked. Make sure the air vent is open. Burp the t&p. Try to force water through the boiler.
    "If you can't explain it simply, you don't understand it well enough"
    Albert Einstein
  • maybemark
    maybemark Member Posts: 1,131
    Options
    I filled the system with putting city water thru the boiler.
    It seems to be working, but a few strangs things are happening
    The DHW tank is close by. so, the return water is heated quickly to the boiler, so my inlet temp is 105 now, but my system temp is 114, but on the other end of the house, the pipes are barely hot, and my basement boiler is totally cold. Maybe it just takes longer to get the system hotter in the back of my house. My radiators are almost cold
    another stange thing, I have a mixing valve on my tank, The cold water inlet was actually hot, like the mixer was taking the hot water in the tank, and putting it into the cold water. I have a valve on the line, and just shut it off.
    I didn't understand that one
  • Harvey Ramer
    Harvey Ramer Member Posts: 2,239
    Options
    Take some pics of the piping perhaps. Or draw a diagram.
  • maybemark
    maybemark Member Posts: 1,131
    Options
    Pictures I can take, but I think it would be hard to understand.
    my other post had some drawings, before i did the piping.
    I just went downstairs, it met the DHW temp, and my flame was at 78% and the inlet was 105 and outlet temp was 115. maybe the heat difference will change the longer it's on.
    I'll look at it later this night

Categories