Question about Ruud UBHC Air Conditioner

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My furnace comes on and heates the house for about

My ruud Silhouette ii (UGPH-07EAUER) furnace comes on and heats the house for about 10 minutes. Then it shuts down normally and immediately restarts - no pause at all. This repeats for 2 or three times in the morning (when the house is cold) and then the furnace works normally (on a while off a while) for the rest of the day. Acts like some kind of temp limiter in the heat box shuts the furnace down and as soon as the burner goes out cools enough to let the thermostat restart the furnace???

Posted by Anonymous on

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There is a limit switch that is likely opening. Be sure your filters are clean and all registers and grilles are open and not obstructed. If the problem continues, you may have a dirty indoor coil or undersized duct work. Some models have a window where you can observe the LED lights. If when the furnace shuts down you see any blinking, you need to count the flashes and we can figure out what the problem is from there.

Posted on May 22, 2010

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Posted on Jan 02, 2017

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Whew...

Most likely... Your part number (look it up)

RUUD 47-25349-?? (LIKE: 02, 03, 07... etc).
(typically: $10 -$20 range... easy job)

On eBay:


A bit slow getting this answer out on the table...

Sorry anonymous.

BUT for the "over-temp" condition...
Forget the wall THERMOSTAT.
There's usually a switch to option the "DEPTH" of
your heating cycle
(Look up Owners GUIDE for your SPECIFIC MODEL).

The "cool down"... (if there is one) would more
likely be you heaters OWN (fan) THERMOSTAT...

It SHOULD not be getting that much RESIDUAL heat
(possible plenum failure... but hopefully just the switch).

Here you have to ask yourself...
Is IT TIME to get your heater
PROFESSIONALLY inspected...
Pacific Gas & Electric used to do that for FREE...
(
but in this new, improved UTILITY climate
we enjoy today... I doubt they''ll do more than TAKE OUT
a few blocks in SAN BRUNO for FREE anymore...
(you might want to check...
(Same DEDIATED workers w/ really poor Management)).

(My opinion: FAT CAT, CRONY, bought & well-paid
EVIL/corrupt Government "oversight" (CPUC)).

There SHOULD also be a HIGH TEMP
fuel shut off "SAFETY" thermostats..

All these should only be handled with skill & knowledge...
as GAS APPLIANCES can be quite dangerous in the
WRONG HANDS...!!

I am just saying...!!

I'm here daily... Comment me back if unclear.

Happy hunting.

Carnac the Magnificent Y

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My furnace comes on and heates the house for about


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I recommend you getting service its a safety thing. the humming is the transformer and is normal.. good luck Tom

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