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Ruud Achiever 90 plus premium green light blinks on left side

Trying to get heat. it fires up but then in 10-15 minutes shuts off and will not produce heat.

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Posted on Jan 02, 2017

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SOURCE: Ruud Achiever 90 Plus wont start

4 blinks is "pressure switch closed" there are 2 in the system according to the wiring diagram one for the vent system  and one for the drain system ... I just wiggled them and heard one "click" the fault light quit blinking and when I pushed the safety switch back in the furnace fired right up.  That being said is there a good website for learning how to maintain your own furnace?  I'll call a pro if I have to, but shoot I can fix a jet engine... this shouldn't be much worse.
Thanks  dan

Posted on Mar 10, 2008

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SOURCE: Ruud achiever 90 plus gas furnace

I have 2 Ruud Achiever 90 Plus UGRK's. Units were install in 2004. One unit flames' out after ignition just prior to the fan kicking in. Confirmed gas value is functional by switching valves. Check wire connections. Could it be the remote sensor or another 24 volt sensor at the IFC that locks out the gas valve?

Posted on Apr 10, 2008

  • 25 Answers

SOURCE: ruud achiever 90 plus blower not working

does the furnace ignite?? your system may not have been lighting and has gone into ignition lockout count the codes of the led lights then remove panel led diagnostic codes are listed there.
if led codes indicate no problem verify capacitor is good and that mtr is getting 115 volts.

Posted on Nov 22, 2008

  • 92 Answers

SOURCE: Ruud achiever 90 plus won`t start at times

sounds like you have a heat pump heat pumps dont work below 30* temps you should have some type of backup heat

Posted on Feb 05, 2009

  • 56 Answers

SOURCE: ruud achiever 90 plus won`t start

Check the data information on the unit there should be a troubleshooting guide that tells you what the two lights blinking once means. hope this helps.good luck. normally found with schematic

Posted on Feb 12, 2009

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I have a ruud achiever 90 plus furnace. The blower motor comes on than I can hear the ingniter click one time and the unit shuts down, 1 green ligt comes on than the other gren light comes on than it...


Check the air filter, if its dirty it will short cycle. A clogged drain will also cause the same problem. There should be a printed legend attached to the inside of the unit or cover that gives you the meaning of all the flashing trouble codes. Perhaps yours may be missing?

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I would try to check your return air first, making sure there is no blockage and that your air filters are clean. It almost sounds like when you take the cover off, you are pulling enough air into the system for it to run, but as soon as you close it off, it's not getting enough air flow, therefore, tripping a limit switch inside the furnace. Most furnaces will also have the codes for the flashing lights and what they mean on the inside of the door covers.

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the motor is bad or start capicitor

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Ruud achiever 90 plus won`t start at times


sounds like you have a heat pump heat pumps dont work below 30* temps you should have some type of backup heat

Feb 05, 2009 | Ruud UBHC Air Conditioner

1 Answer

Ruud achiever 90 plus won`t start


Check the data information on the unit there should be a troubleshooting guide that tells you what the two lights blinking once means. hope this helps.good luck. normally found with schematic

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Ruud achiever 90 plus blower not working


does the furnace ignite?? your system may not have been lighting and has gone into ignition lockout count the codes of the led lights then remove panel led diagnostic codes are listed there.
if led codes indicate no problem verify capacitor is good and that mtr is getting 115 volts.

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Ruud achiever 90 plus gas furnace


The door, you mean the metal cover on the front? if you have the door off and push the safety switch in with your hand everything works fine? I need more info here, but if what I said is right, then the "door" isn't making good contact with the switch.

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Ruud Achiever 90 Plus wont start


4 blinks is "pressure switch closed" there are 2 in the system according to the wiring diagram one for the vent system  and one for the drain system ... I just wiggled them and heard one "click" the fault light quit blinking and when I pushed the safety switch back in the furnace fired right up.  That being said is there a good website for learning how to maintain your own furnace?  I'll call a pro if I have to, but shoot I can fix a jet engine... this shouldn't be much worse.
Thanks  dan

Jan 19, 2008 | Ruud UBHC Air Conditioner

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