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I'd like to hook up a C wire for a new thermostat on my
I'd like to hook up a C wire for a new thermostat on my Weil-Mclain ultra Series 3. It's not obvious from the UControl ladder wiring diagram were that would be … read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
I have a ultra 155 weil mclain boiler, the background screen
I have a ultra 155 weil mclain boiler, the background screen stays gray all the time, never changes to a blue screen. is it in a lockout mode boiler is running fine please help brian … read more
hvacdave84
hvacdave84
100 satisfied customers
Code 996 then 630 on weil mclain ultra, This month, no--Have
no--Have several Ultra's and Gold Stars--Installer died and new company servicing me-could not find in manuals code, but see from you note to replace control module … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
Phil we need to relace our boiler and they the company
Hi Phil we need to relace our boiler and they the company recommended a wg09 weil mclain water boiler with beckett burner - how do I know if this is the best weil mclain and most efficient? … read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
Our unit thermostat is set at 74 degrees but the temp on the
our unit thermostat is set at 74 degrees but the temp on the thermostat shows 66 degrees. There is little or no heat emitting from the exhaust vent. We live in Big Timber Montana. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
I have 10113-200 module in VHE furnace, it worked okay last
I have 10113-200 module in VHE furnace, it worked okay last night this morning no heat no green light lit on module. … read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
hello my ultra 105 boiler has a blue screen...when demand is
hello my ultra 105 boiler was working fine this morning. im in Philadelphia pa and temps dropped dramatically....the thermostat is sending signal to boiler for demand...boiler has a blue screen...it c… read more
Expert
Expert
Honeywell Gas valve type VK8115V 1275 on a Weil Mclain Ultra
Honeywell Gas valve type VK8115V 1275 on a Weil Mclain Ultra 105 boiler. Boiler not staying lit. Goes thru cycle, fires for a short time then produces a low vibrating sound and cuts off. My diagnosis … read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
I have issues with my boiler when we turn on the radiant heat
I have issues with my boiler when we turn on the radiant heat zones, the boiler will randomly shut off and then we have no hot water. It will reset but it happens again a few days to a week later- we … read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
I need the replace the boiler in my home in St. Louis, Missouri
I need the replace the boiler in my home in St. Louis, Missouri which has hot water heat and radiators. My home is a two-story, single-family residences, built in 1918, and has about 3,000 square feet… read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
Our church has a Weil-McLain cast iron sectional forced draft
Our church has a Weil-McLain cast iron sectional forced draft gas fired hot water boiler M#BG578 (641 MBH input/521 MBH heating capacity output). How old is this boiler? What is the model year? If the… read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
Weil Mclain Energy Star XXXXXXXXX 0809) recently installed
Weil Mclain Energy Star XXXXXXXXX 0809) recently installed in our new construction. We do not have the paperwork or specs on this furnace. We need this for the local plumbing inspector for a certifica… read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
I have a two year old weil mclain ultra series 3 boiler which
I have a two year old weil mclain ultra series 3 boiler which is given me the ignition fault message.… read more
Rick
Rick
HVAC Supervisor
25,388 satisfied customers
I have a crew coming tomorrow to install a new Weil-McLain
I have a crew coming tomorrow to install a new Weil-McLain PUO#3 Ultra oil boiler with a Beckett NX flame retention burner. I just discovered it has an AFUE rating of only 86%, which makes it ineligib… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I programmed my weil mclain boiler but it stays in standby
I programmed my weil mclain boiler but it stays in standby mode. How do I correct that to accept the priority 3 settings… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I h ave an ultra 105 lp boiler and i need to connect a taco
I h ave an ultra 105 lp boiler and i need to connect a taco sr503 switching relay to run the circulators can you tell me where to connect the wires that usually go to t t terminals on the aquastat?… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I have a Weill McLain Ultra-105 boiler and its companion Ultra
I have a Weill McLain Ultra-105 boiler and its companion Ultra Plus 40 hot water heater. They were installed seven months ago. My question is about the hot water heater. The thermostat on the hot wate… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
Im a contractor and Im working in a weil Mclain boiler the
I'm a contractor and I'm working in a weil Mclain boiler the Ultra 230, series 2, it supplies domestic hot water to an store, the control board display is showing the word E 28 do you know what does i… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
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Meet the Experts:

Phil

Phil

Mechanical Engineer

7,791 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

1,024 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.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

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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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