Question about Heating & Cooling
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Posted on Jan 02, 2017
SOURCE: no heat
the heater core valve or the heater core itself may be damaged.check the hoses that run to the heater core they should be warm after running the heater full blast. if one of the hoses is hot. The valve may be plugged. the heater core valve is connected to the hose itself. It can be an electronic valve or vacuum controled valve.If it is a vacuum controlled valve you can manually open it and close it . If it's plugged by debris from dirty coolant or sludge it can get clogged. If it is an electronic valve, check it with a volt meter and see if current is flowing through it. if it is not the valve has to be replaced. if it is not the valve, it is the heater core that is leaking or has build up and has clogged.Needs to be replaced.
Posted on Nov 20, 2008
My solution sounds dumb, I had the same issue. Took the lamp cover off the bottom. The screws were loose holding in the lamp. Maybe they heat and expand and eventually work their way out and the lamp doesn't make good contact. Just tightened mine up, the unit would power off after 45 minutes prior. Been on now for 5 hours, no trouble.
Posted on Feb 11, 2009
I had to get on the roof of mine, remove the cover and manually spin the fan. Add a little oil to the shaft where it goes thru the bearing. All of this is done on the roof side. Mine required this procedure every spring. Duotherm realizes they had a problem and have since corrected it but they don't deal with all of their customers that had the original problem.
Posted on Jul 20, 2009
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