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Munchkin 140 has code PrO

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Topper1
Topper1 Member Posts: 2
in Radiant Heating
How do I reset boiler so it has enough pressure to come back on? Or is this the problem? Could there be something else. unit is 8 years old.

Comments

  • Smith19
    Smith19 Member Posts: 119
    Munchkin boiler

    Hold on: Gas pressure or hydronic water flow pressure? Which error code specifically do you see?



    Munchkins are okay with efficiency and general design, however their controls have a somewhat poor name in the Hydronic review community.







    Cheers
  • BobbyG
    BobbyG Member Posts: 79
    water pressure

    PRO - is "low water pressure" - The water pressure switch is there to protect the boiler from low water/pressure conditions.  Check to see what water pressure you have on the system.  If it is below 12 # you need to find out what the problem is and correct it. 



    If your system is below 12#, the water pressure switch is just doing its job by alerting you to an issue.



    If there is an issue with water pressure, could be failed expansion tank, failed pressure-reducing valve, etc.
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