No Heat In 1 Of 3 Zones, Oil Burner - HVAC - DIY Chatroom Home Improvement Forum

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Old 01-17-2009, 09:34 AM   #1
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No heat in 1 of 3 zones, oil burner

Hello- I have a 3 zone oil-burner and hot water baseboard radiators. One of the zones does not heat. I tried turning up the thermostat to 90 and leaving it that way for about 10 minutes- nothing. All three zones have Taco 571 zone valves. On the zone in question I moved the switch on the Taco box to "open" and left it that way for about 10 minutes- nothing.

Does that indicate a bad zone valve switch?

I don't know much about it- so any help much appreciated.


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Old 01-17-2009, 11:21 AM   #2
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There should be a small air bleed petcock/screw on the top/end of the radiators for that area. Open it slowly and bleed the air out until water comes out. You should also get a heating tech to check the water level in the system/expansion tank etc etc once a year.


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Old 01-17-2009, 11:42 AM   #3
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All the radiators appear to be the same. Copper pipe out of the wall and into some metal fins and then copper pipe out and back into the wall. I don't see any kind of bleeder valve anywhere- just pipe and fins. ???
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