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Rhreem Power Vent 2 works for about 5 minutes and then seems to over heat (4 Posts)
Rhreem Power Vent 2 works for about 5 minutes and then seems to over heatHello,
I have a Rheem Power
Vent 2 40 gallon water heater. It was new with the home and is now
about 11 or 12 years old now. Friday the blower motor stopped working
and would only buzz and would do the 4 flash error code.
For a while I was about to get it work for about 5 minutes. burner
would fire and blower would work and then very suddenly, after about 5
minutes of working, the motor would sound like it was wining, where it
was still running but something was stopping it. When this occurs the
vent stops pushing air out of course and gets hot and the motor seems to
Because the temp, pressure/vacuum switch, and blower are in
the same device I replaced the unit, part #sp12562. While installing
the new unit we ran a snake through the vent from both directions and
there was nothing clogging the vent.
Installed the new unit let it run and checked it an hour or 2
later and the same issue. Blower motor buzzing when attempting to start
and is very hot when issue occurs. 4 Flash error code.
for blower to cool and kicked off the process again, runs for 5 minutes
then blower motors starts whining and gets hot and eventually shuts
down sometime buzzing like it's trying to start the motor but can't.
Checked the element, removed the plate element fires correctly
flame is blue the entire time including when the blower starts
We removed the temp sensor (putting tape over the whole during test) same symptoms.
Checked outlet is 120v and the blue wire #8 gets 120v the entire time.
power vent and pulled up metal deflector in the center of unit as far
as I could everything looks normal. There was a little corrosion near
the top, but nothing excessive.
Checked the vacuum tube, it's clean no clogs.
this water heater has been in my house for 11 or 12 years and there
have been no major changes to my home. I'm wondering if there might be
anything else to look for to help resolve.
Maybe It's TimeFor a new water heater? They only seem to last about ten or twelve years in my neck of the woods.
Thanks, Bob Gagnon
ProblemsI'm not a pro but we recently tried to troubleshoot my dad's 6 year old Bradford White power vent heater and gave up. After cleaning the pilot, changing the pilot, changing the burner assembly and I can't remember what else he just bought a new heater.Weil-McLain EG-45 connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. Using Rectorseal Steamaster water treatment to greatly reduce corrosion in the boiler.
Steam system pictures updated 6/5/14.
Connections:You need to put an Amp clamp on the hot wire to the motor after the plug or any place where the motor feed wire goes to the motor. As close to the motor is best. I would be checking for a bad receptacle and resistance through the plug. You will get 120volts but if the amp draw through the plug is high, it will cause the motor to overheat and be ruined. Sounds like a bad connection.
Everyone needs a decent Amp Clamp. Owning both analog and digital has benefits. Don't leave the shop without them.