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Hydronic Heating System (Hot Water Boiler) Showing 0
Hydronic Heating System (Hot Water Boiler) Showing 0 pressure.Hi - Got home to a cold house and checked my boiler which showed a "Pr0" error code on my Munchkin 140M R2 boiler. Temp gauge is showing c… read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
570 satisfied customers
I have a Munckin MC 120 wall mount.recurring Pr0 code. then
I have a Munckin MC 120 wall mount.recurring Pr0 code. then it will work fine. Usually it will reset after being shut down for awhile or having water added to the system. But today not so. Local plumb… read more
Rick
Rick
HVAC Supervisor
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I am Having a problem with my munchkin M80 boiler. I have no
I am Having a problem with my munchkin M80 boiler. I have no Hot Water. It has been turned off overnight and most of the day today Saturday. Hydronic system with a 40 gal Domestic tank. I had a simila… read more
Nathan Marshall, MP
Nathan Marshall, MP
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We have a Munchkin Boiler in our small home in Denver, Colorado.
We have a Munchkin Boiler in our small home in Denver, Colorado. The home has radiant heat, and when it gets cold, the boiler obviously has to work much harder. Lately, Denver has had very cold temper… read more
Rick
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My Munchkin boiler is showing error PrO, but there are no leaks
My Munchkin boiler is showing error PrO, but there are no leaks anywhere in the house and the city water is showing 60psi coming in. Can I fix it myself or should I wait until morning when my service … read more
Phil
Phil
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Degree, Mech Engr Technology
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I have a munchkin high efficiency heater with the "925" controller.
I have a munchkin high efficiency heater with the "925" controller. The batteries in my wall unit thermostat died, and the system has been offline for a while. I replaced the batteries, turned the the… read more
Rick
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C 120 flashes on screen then PrO on munchkin stainless steel
C 120 flashes on screen then PrO on munchkin stainless steel high efficiency heater 925 controller… read more
Phil
Phil
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I have a Munchkin High efficiency heater with 925 controller,
I have a Munchkin High efficiency heater with 925 controller, model M80. It was installed in 2004. There were installation issues in the first year, it has been running well since. The boiler has been… read more
Rick
Rick
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I have a Munchkin 140m. After several faults over past 6mo
I have a Munchkin 140m. After several faults over past 6mo (F18 code: Gas valve), which each responded to a restart, the unit has now failed and shows no code, merely the temp ~68. It seems to try to … read more
Brian
Brian
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my munchkin T80 has a pr0 error message. The pressure gauges
my munchkin T80 has a pr0 error message. The pressure gauges show no pressure. However, I see no leak. Is there a way to repressurize the system and see if the pressure holds?… read more
Phil
Phil
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Degree, Mech Engr Technology
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munchkin high efficiency stainless steel boiler .boiler not
munchkin high efficiency stainless steel boiler .boiler not operating,controller reads Pr0? please respond.No heat no HW? thanks… read more
Tim H.
Tim H.
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we have a munchkin 140 m boiler. when it starts up to bring
we have a munchkin 140 m boiler. when it starts up to bring heat it seems like it has a big vibration for about 5 to 10 seconds. what could cause this. it has no faults showing… read more
Phil
Phil
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Degree, Mech Engr Technology
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Im trying to turn on my radiant heating system now that cold
I'm trying to turn on my radiant heating system now that cold weather has begun. But I can't figure out how to do it. There is a Munchkin control unit attached to my Munchkin Stainless Steel High Effi… read more
Rick Mather
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munchkin heater seems to be boiling water in the pipes on shut
munchkin heater seems to be boiling water in the pipes on shut down. Installer thinks a new controller needs to be installed to keep pump going after the thermostats stop calling for heat...… read more
Phil
Phil
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Munchkin high efficiency heater w/ 925 controller. F09 error.
Munchkin high efficiency heater w/ 925 controller. F09 error. Checked spark, seems ok. pressed S4 reset. Flame comes on for 30 seconds then goes off. Tries 3 times and reverts to F09 error… read more
Phil
Phil
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Degree, Mech Engr Technology
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munchkin high efficiency heater with a 925 controller. we keep
munchkin high efficiency heater with a 925 controller. we keep losing boiler pressure. it will run for a while and when it shuts off it will go to zero lbs. pressure.… read more
Rick
Rick
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Munchkin high efficiency boiler took four hours to reach optimum
Munchkin high efficiency boiler took four hours to reach optimum temp of 180 Degrees. What is going on? Is it something electrical?… read more
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Munchkin high efficiency heater with a 925 controller. Showing
Munchkin high efficiency heater with a 925 controller. Showing a F09 code when we attempt to start it. Have replaced the igniter, becasue we had no fire,but it is saying no flame detected.… read more
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Meet the Experts:

Phil

Phil

Mechanical Engineer

8,427 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,029 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

A-1 Tech

A-1 Tech

Service Manager

526 satisfied customers

I have been in the HVAC business for over 40 years.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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