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.

possible causes of Laars lock-out??

Timco
Timco Member Posts: 3,040
in THE MAIN WALL
No doubt you are correct. That was just my best guess. I will check out the mfg date tomorrow & put a call in to Laars if I can't find anything wrong...any other suggestions / opinions are appreciated!

Tim
Just a guy running some pipes.

Comments

  • Timco
    Timco Member Posts: 3,040


    I have a cust with a EDP 175 that has a new ignitor/sensor assy, and I replaced the thermostatic valve as well. Unit runs great, and never gives any error codes. Once a month or so, HO feels cold and unit says LO. I reset the computer and all is good. It runs & tests very well while I am there. I know if it fails to fire after 3 or 5 attempts this will happen, but it fires first time every time I am there...Any suggestions?

    Tim
    Just a guy running some pipes.
  • Tony_23
    Tony_23 Member Posts: 1,033
    How old is it ?

    Look at the board and see what series it is.

    I had 4 that did this and it was a board issue.
  • Timco
    Timco Member Posts: 3,040


    Likely around 10 yrs. I will be back there tomorrow.

    Tim
    Just a guy running some pipes.
  • Tony_23
    Tony_23 Member Posts: 1,033
    Not quite

    EDP's and EBP's weren't around in '97, IIRC. 1st one I did was in 2000. Problem boards were '01 & '02 installs for me. Could've been earlier models too.
  • Unknown
    Unknown Member
    On the right track

    Tim, if the combustion is right on (I'm sure you already checked) and your DC microamps flame signal is right, and steady, I would suspect the board, as well.

    Cross contamination of the air supply is also a possibility.

    Noel

    603 335 6300 ex 514
This discussion has been closed.

Categories