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Radiant Floor Heating/Polaris water heater problem

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Question
I have a Polaris 130,000 btu 50 gal water heater that I use for infloor heat and hot water.  Almost every winter the unit goes out and I get a pressure switch error (1 blink on the light indicator) I have now found that if I remove the clear tube and take a hair dryer to the nipple bringing in the cold air from the outside, I can get the unit to start up again.  Recently, I've had to do this 3 times in the last month.  How can I prevent this problem from happening?

Answer
Sorry, this is a DIY technical question.

Gas-fired appliances are potentially dangerous. You are fiddling around with a safety switch, which proves proper air flow in the exhaust or flue pipe. Your problem could be due to improper installation, lack of proper service or-less likely-a factory flaw. We design radiant floor heating systems using Polaris water heaters (never "open") for folks all over N. America and install and service Polaris condensing water heaters here in Minneapolis, but still, we can't diagnose problems over the phone or internet.

Polaris does have a very good tech line and they will talk to homeowners...rare. Just remember, it is risky working on a gas appliance without the knowing what you are working on, or it's purpose.

Be careful out there.  

Radiant Floor Heating

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Morgan M. Audetat

Expertise

Radiant panel heating design, including floors and ceilings, European wall panels and snow melting for residential and light commercial buildings..............................................................-Master of Steam and Hot Water,City of Minneapolis....................................................--- Master Plumber, State of Minnesota...........

Experience

30 years..... Charter Board Member - Radiant Panel Association, former manufacturer of condensing boilers, former national distributor of radiant floor products, son and apprentice of mechanical & plumbing contractor. Current owner---www.BadgerRadiantDesigns.com---Minneapolis mechanical/plumbing contractor specializing in hydronic based, integrated HVAC systems. Radiant floor heating/cooling. Snow Melting. Condensing Boilers. Indirect water heaters. System design, consulting and technical training world-wide. Licensed contractor, designer, installer and consultant.

Education/Credentials
B.S. University WI 1981 CONTINUING EDUCATION: Viessmann Condensing boiler and Solar water heating certification 2010, N.D.S.U. Lead Worker RRP certification 2010, Knight condensing boiler certification 2009, Wrightsoft Manual J CAD certification 2009, RPA Designer & Installer Certification 2008, Nate Hydronic/Forced Air Certification 2008, Uponor/Wirsbo advanced design school certification 2007, Buderus Wall-hung certification 2007, Power Limited License (low voltage controls) 40 CE credits 2005, Basic Hydronic Certification IPEX & Northern Alberta Institute of Technology 1998, Charter Board Member - Radiant Panel Association 1994, Residential Off-Electric to Hydronic Conversion Heating School Canadian Hydronics Council 1994, B&G Little Red School House 1993, Rood Utilities (now Auburn Technical Institute) Oil Burner School 1993 ,Tekmar Controls residential and commercial 1993, Division Manager and Advanced Hydronic Seminar Instructor for the first Exclusively Hydronic Radiant Floor Distributor in the USA 1990, Hydronic Radiant Heating Association Workshop participant with Richard c. Bourne, PE spring 1988, Master Plumbing, Hydronic, Solar Course Red Rocks Community College 1987.

Awards and Honors
2009 System Showcase Award - Radiant Panel Association

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