Sorry to bring this up again.. but, captain, I have a problem

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Old 09-09-11, 04:37 PM
J
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Sorry to bring this up again.. but, captain, I have a problem

This was discussed several years ago, but the thread was closed.

http://www.doityourself.com/forum/bo...-problems.html

Multi-zone hot water heat system. Homeywell 40004850-001 valve. When this zone (#1) is OFF, and zone#2 calls forheat, hot water flows through both zones. the 'swinging arm' on the bottom of zone #2moves all the way to the right, while zone #1 'stops' from manually moving all the way. I can 'force it', then it returns to the 'normal' position. But NTL, heat flows into zone #1.
I removed the motor from the problem zone #1, and turned the thermostat to call for heat.
the cog on the moto turned, so I can assume the motor works. I there was a short cycle
of the furnace to bring the temp up, so the contacts work. Now, my question how can I
tell if I have to replace the power head or the entire head/valve assembly?

Thanks.. still have a week or two before I need heat up here in the north country,
but want to make sure I get heat when I need it.

Thanks
 
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Old 09-09-11, 04:57 PM
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Hi,

Sounds like the body may have corrosion internally. Sometimes after the head is removed you can turn them back and forth to free it up. Would seem your getting bleed through because its not closing all the way.

Not sure of what parts get damaged internally such as O rings and such.

Otherwise IMO you would most likely change the body if the motor and end switch are working..

Mike NJ
 
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Old 09-09-11, 06:31 PM
J
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So, by that, I think you mean, I have to drain the system, cut pipes, and sweat in a new valve?
..thanks for your reply..
 
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