Question about Ruud UBHC Air Conditioner
It started getting cold so I checked the thermostat. We have an electronic one that shows the time, temp, etc. It was way colder than it was set for and I noticed it showed a flame under the desired temp we had set. I have no manual from the previous owner and the RUUD website is down :( I opened it, but cannot seem to find what to do...please help. Thank you!
Te flame symbol on the T-stat is just telling you that the T-stat is calling for heat.
What you need to do is go to the furnace and see if there is a blinking light. If there is count the blinks and look for a blink code list on the wiring diagram.(Usually found on the main panel.)
After you have done that, disconnect power to the unit, and then reconnect after a few minutes. This will reset any auto switches if they are tripped.
Chances are the problem will occur again even if the furnace does fire back up, but it "may" get you through the night until you can either diagnose the problem or get a service tech in.
Ideally, have someone else turn the power back on, and the thermostat, while you are watching the furnace to see exactly what is happening.
If it does not operate properly at that time, let me know exactly what it is/is not doing and we can go from there.
Posted on Dec 29, 2008
Look on the condensor, (outdoor unit) at the very bottom of the rear panel and you should find a red reset button. push it. If that does not solve the problem, and the outdoor unit is running (make sure both the fan AND the compressor are running) then you are looking at a low refridgerant issue and possibly dirty coils.
In that case, clean the coils and have refridgerant added.
Posted on Sep 24, 2009
Problem: Your furnace will not
ignite the gas to produce heat for your home. When a furnace has a bad ignitor
what I see most of the time is the following sequence of operation:
1. Thermostat calls for heat. 2. Draft inducer motor starts. 3. Pressure switch attached by a small plastic or rubber tube senses the negative pressure produced by the draft inducer and closes. 4. Draft inducer runs for 30 seconds to a minute before you hear a gas hissing sound. The ignitor did not glow, the flame sensor (a small metal probe about 1/8" in diameter, with a white porcelain base) does not sense the flame, so after 8 to 10 seconds the hissing sounds stops with no ignition of gas to heat your home. Your furnace shuts down and goes into a lock out condition until you turn your power switch back off and on again. Then the sequence starts all over again with no ignition of the gas. Solution: You probably need to purchase and install a new ignitor. I would suggest that you inspect your ignitor closely for cracks. Make sure you do not touch the ignitor with your bare hands. If you do not visually see a crack, then you could have a furnace control board problem or a limit, rollout switch problem. The furnace's control board might not be supplying the voltage to the ignitor. If your furnace lights and the gas stays on for 8 to 10 seconds, then shuts right back off, then you need to clean your flame sensor with light sand paper or steel wool. You might need a new flame sensor, but most of the time they can be cleaned an will work well after cleaning.
Posted on Nov 26, 2010
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Posted on Jan 02, 2017
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