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Lennox G71mpp Error Code 228


I got a new furnace because our other one was going on 20 years old and I did not want to be w/o heat during the winter (I'm in MN and It is a very high end complicated unit and I would guess less than 10% of the techs truly understand them. I sell them and fix them and Lennox does not tell us what they do with every revision but it happens to every brand. We do, however, try to provide information that will help servicers arrive at their own diagnosis. http://cygnussoft.com/error-code/lennox-air-conditioner-error-codes.html

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Lennox G71mpp Error Code 228

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E 225 High pressure switch failed open − Refer to troubleshooting in installation instruc- tion. See E 250. Why else would this same exact part FAIL not once but twice in the last year?? Lennox Furnace Error Codes Owners Striving for Better-Designed, Healthier Buildings Calendar of HVACR Training and Education Events GALLERY: Top 10 Water-Consuming Countries Subscribe to this feed -- HVAC Light ---- Dark HVAC -- HVAC Mobile

The 228 code is a pressure switch calibration code. Lennox Slp98uh Pressure Switch I have had HVAC techs out three days in a row (at $160/visit) and still they really don't know what is wrong with our furnace. Lost Password? No flame current sensed.

The manual says to check the wiring for the pressure switch after clearing the vents. tobyo 21 Posts Posted-01/02/2011: 3:13:06 PM Model number: G71 MPP-36B-070-01 we obviously found it :) Edited by - tobyo on 01/02/2011 3:15:45 PM slctech 2096 Posts Posted-01/02/2011: 4:25:37 PM It's something to inspect when you suspect there may be a problem with the control board. __________________ http://www.37flash.com/ « Previous Thread | Top of Page | What's New | Next Replacing a part doesn't always resolve the issue that caused the part to fail!

Lennox Slp98uh Pressure Switch

tobyo 21 Posts Posted-01/02/2011: 09:25:51 AM thanks Baltar. E 227 Low pressure switch open during trial for ignition or run mode. Lennox G71mpp Error Code 228 These cards are also damaged by Electrical Spikes caused by power failures and lightning. Lennox G71mpp E228 I've checked the usual culprits (ice in exhaust tube, water in lines to pressure switches, proper draining).

It is 2 inch exhaust and intake and not supported much. weblink I have had HVAC techs out three days in a row (at $160/visit) and still they really don't know what is wrong with our furnace. hopefully the worst is behind us now. I'll check back in tomorrow. Lennox Error Codes

If you have any problems with the registration process or your account login, please contact support. I'm a pretty unhappy customer at this point. Ensure the unit is tilted from back to front, not to exceed 1/2 inch, and slightly sloped to the side of the condensate drain, not more than 3/16 inch. http://cygnussoft.com/error-code/com-error-code.html Over time some of the inducer wheels will crack on the hub, causing the problem you describe.

I know, however, that I will need to put in a new pressure switch, because this will happen again. I am sure by now, all the crappy ones Lennox had in their parts inventory have been used up and chances are the replacement set will be much more trustworthy.The other Any single component can be defective when it is manufactured.

You just need to call the installing dealer.

back later with info. yea, it would seem I got one of those bad switches. A least I have a little time now to shop for a good price. I would imagine it was a Lennox part, but can't say for sure.Furnace guy came and went already.

I took everything off that I can see and everything is free of dirt. Last recycle due to the pressure switch opening. It did this earlier, and then faulted with high pressure switch issue when it tried to push more heat/volume Expert: Phil replied1 year ago. his comment is here The high end printed circuit cards use a large capacitor like device, or several in parallel, to capture and release such surges, these do not wear out. Ask Your Own

The furnace is 14 months old. good thing because it's only 1 degree now!! It is 5 degrees outside right now and my house is dropping about 3 degrees an hour, so I'm really in a tight spot to figure this out. Expert: Phil I personally like the vent sag, seen to many 2" pushed in over a finished ceiling without any support, takes a couple seasons to sag and become a problem.

Thanks for all replies. guess I kinda don't think so but I am extremely disappointed in my "new" furnace. I did check outside and inside there is a piece of rubber connecting the exhaust up above. Last retry failed due to the pressure switch opening.

my other issue is: how do I get rid of this furnace? Please read this... I've checked This answer was rated: ★ ★ ★ ★ ★ I have a Lennox SLP98UHV with an error code E228. Quote: Originally Posted by mississippidave I've had the had the same problem with my Lennox SLP98, but I have found something that worked for mine (which was installed in Nov.