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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I have Gas Boiler Munchkin Model 199M. System had error code

Customer Question

I have Gas Boiler Munchkin Model 199M. System had error code "PRO" which maybe water pressure switch bad according to Manual. I replaced it and it worked for 4 days and stop. It show error code "PRO" again. I check water pressure it shows 20 psi No Leaks. I try to jump (bypass) water pressure switch it does not show error code only shows water temp 66 degrees. So what is wrong with my boiler?
Submitted: 1 year ago.
Category: HVAC
Expert:  Rick replied 1 year ago.

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. If my initial response doesn’t answer your question then let me know and we can

continue our conversation.

So the boiler won't fire up with the pressure switch jumped out?