20 Most Recent Ruud UBHC Air Conditioner Questions & Answers

unfamiliar with watt restrictors.
heat strips have 2 safety devices, a thermal overload, they get to hot they shut off, cause not enough air flow increase fan speed this device is auto reset. a fusible link a fail safe to thermal over load, no reset and sometimes replaceable. if this does not help would like to ask you a few questions. one of the buildings i take care of has 200 + reem/ ruuds all electric heat. if a part is defective replace, please do not by pass. safety frist.

Ruud UBHC Air... | Answered on Feb 05, 2020

it sounds like unit could be kicking out the low pressure switch or if it is a electric furnace it could be the sequincers

Ruud UBHC Air... | Answered on Mar 13, 2019

If sold in the USA in the last five years the answer is yes.

Ruud UBHC Air... | Answered on Jun 08, 2018

The blower speed can be changed somewhat the same way , but it will have to be rewired using one of the extra capped wires for a lower speed. That is if the other wires were not clipped and just capped

Ruud UBHC Air... | Answered on Jan 08, 2018


Compressor and condenser not included

Spec sheet go here

Ruud UBHC Air... | Answered on Jan 06, 2018

bad capacitor or motor

Ruud UBHC Air... | Answered on Dec 13, 2017

It sounds like you have a unit called a heat pump. When a heat pump unit is in cooling mode the outside unit blows hot air and the inside unit blows cold air. If the outside unit is blowing cold then the indoor unit is most likely blowing room temperature or warm air. It sounds like the thermostat could be controlling incorrectly or you could have a failed reversing valve which is the device that switches the unit from heating to cooling mode.

Ruud UBHC Air... | Answered on Oct 11, 2017

If you push the contactor and it runs why replace all that stuff??? You have to figure out where your 24 volts stops on its way to the condenser contactor. wire red green and yellow together at tstat, this should bring on indoor fan and condenser. if idf runs but cu does not you have an issue either going outside or a pressure switch is tripped. if nothing runs you have no 24, either a blown fuse, tripped float or bad transformer.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Ruud UBHC Air... | Answered on Oct 03, 2017

Send direct power to the blower by bypassing relay . See if motor runs

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Ruud UBHC Air... | Answered on Jul 19, 2017


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
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

I am just saying...!!

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

Happy hunting.

Carnac the Magnificent Y

Ruud UBHC Air... | Answered on May 10, 2017

Hello bikejocky,

MOST LIKELY you have a "hot surface" element
with a tiny crack in it...
About 25 years ago... I put one of my poor abused
fingers on the element to see if it was at all warm...
In so doing I touched the spot where the crack was...
and it did INDEED have a full 120 volt, 60 cycle AC
current waiting for my FINGER to complete the
circuit... (not a recommended procedure)

My 25 year old RHEEM... finally kicked it.
I keep spares... and bought 2 more when I used
the last

Since these parts are pretty cheap... I get spares
62 22868 93 Rheem 62 22868 93 Hot Surface Ignitor

Take a look... There are two basic configurations

The WISEST APPROACH is to use a "meter"
to verify the "line current" is present (not finger)
and check the "SURFACE" for continuity.

Once you copy the number DIRECTLY from
YOUR OWN part... look it up... internet... eBay
and AMAZON (like Robert Shaw #41-408).

>> It is the plug & mount that is important...!!

(consider that spare you always wanted
(If you get it... you will probably never need it)).


The cycling limit & fan
(never touched a RUUD... (so... I presume)) is to clear accumulated GAS FUMES to avoid any explosive

I do know RHEEM... (ERGO... I have every confidence)
((RHEEM & RUUD, in my opinion, are design twins)).

Carnac the Magnificent

Ruud UBHC Air... | Answered on May 10, 2017

Very impressive!! This button you are referring to is a contactor. When your tstat calls for cooling it sends 24 volts out to the contactor therefore pulling the contactor in completing the circuit for the fan and compressor. Usually this doesn't work when a safety switch is preventing the 24 from getting to the contactor. Either it's not getting a signal from the tstat or one of your safeties are tripping (high or low pressure) or the float switch on your drain line at the air handler is wired in to only stop the condenser from working rather than the tstat. A multimeter would be extremely helpful for you to determine where the voltage is stopping. Check your drain first, I don't suggest your patented rock idea, it's not running because of a safety. Good Luck , let me know!!

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Ruud UBHC Air... | Answered on Apr 30, 2017

The evaporation cooler tray can get build up of dust and debris and plug the drain..

Ruud UBHC Air... | Answered on Apr 27, 2017

Not a furnace guy but I do know that your drain should be insulated. Gotta figure out if it's water from the drain leaking or actual condensation dripping from the outside. If sweat, it needs insulated. Good Luck.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

Ruud UBHC Air... | Answered on Mar 11, 2017

Check breaker for outside unit Also check to see if you ahve afloat switch on the inside air handler. Located under or in front of unit. It may be full of water and tripped. Blow out drain if tripped.

Ruud UBHC Air... | Answered on Mar 07, 2016

Again is this a spark or a glow coil? If it is a glow coil look at the coil and see if there is a crack or white spot on it. If so it needs to be replaced.

Ruud UBHC Air... | Answered on Feb 19, 2016

going off on safety. could be drawing to many amps or compressor overheating

Ruud UBHC Air... | Answered on Aug 26, 2015

thermostat, relay or heating element issue

Ruud UBHC Air... | Answered on Aug 17, 2015

change motor.

Ruud UBHC Air... | Answered on Aug 17, 2015

Not finding what you are looking for?
Ruud UBHC Air Conditioner Logo

779 questions posted

Ask a Question

Usually answered in minutes!

Top Ruud Heating & Cooling Experts

Dennis Boxerman

Level 3 Expert

1303 Answers

John Tripp
John Tripp

Level 3 Expert

4656 Answers


Level 3 Expert

746 Answers

Are you a Ruud Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Ruud Heating & Cooling

  • Ruud Heating & Cooling

Most Popular Question

rudd silhouette ii blower

  • Heating & Cooling