# HVAC guys, need advice...again! :D **URL:** \ **Category:** PittSpeed Off Topic\ **Created:** [March 24, 2008, 5:11pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319 "2008-03-24T17:11:42Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![JackdUp](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jackdup/32/6015_2.png) [@JackdUp](https://forums.speedlife.net/u/JackdUp)\ **Post date:** [March 24, 2008, 5:11pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/1 "2008-03-24T17:11:42Z")
Hi again. This time it’s the heating system… Model: Bryant Plus 80 It started acting up at the end of last week. I turned off the power, let the system completely cool down, then power it up. It fires up the first or second time it tries to light on the first call for heat no problem…then once the system calls for heat the second time it tries to fire…but won’t stay lit. Shuts down and throws code 34. 1. The diagnostic panel on the unit says it could be the flame sensor: it recommended to try to sand the flame sensor’s exposed probe so the oxidation was removed and it should do it’s thing again. Sandpaper to sand with? Is 600 grit OK? 1. The panel says the operating range is to come up to .5 microamps when flame is detected. I can test for this. Is it DC or AC and what operating range is it, 24 VDC, 110 VAC, etc? Here’s one guy that says it worked. > **[Bryant 383KAV code 14 - flamesout x4](https://www.askmehelpdesk.com/heating-air-conditioning/bryant-383kav-code-14-flamesout-x4-79874.html)** > > Become an expert or ask an advisor about ANY subject, such as financial advice or medical questions, at this question-and-answer community. ---
**Author:** ![xlogic](https://avatars.discourse-cdn.com/v4/letter/x/59ef9b/32.png) [@xlogic](https://forums.speedlife.net/u/xlogic)\ **Post date:** [March 24, 2008, 5:37pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/2 "2008-03-24T17:37:56Z")
where are your condensation lines running? find the main one…see if it comes off…take it off and aim it at the floor and see if water runs out…if it trickles try sucking it first then aiming it at the floor…along with sanding the flame sensing unit. I’ve seen a bunch of furnaces need this to make them fire up…all from the same manufacturer though ---
**Author:** ![STEELCITYEVO8](https://avatars.discourse-cdn.com/v4/letter/s/d9b06d/32.png) [@STEELCITYEVO8](https://forums.speedlife.net/u/STEELCITYEVO8)\ **Post date:** [March 24, 2008, 6:12pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/3 "2008-03-24T18:12:57Z")
YES, u can sand the flame sensor. It will not require much to clean it up. I use sandclothe used for cleaning copper pryor to braze/soldering. we are a Bryant/Carrier Dealer if you need any more help ---
**Author:** ![JackdUp](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jackdup/32/6015_2.png) [@JackdUp](https://forums.speedlife.net/u/JackdUp)\ **Post date:** [March 24, 2008, 6:22pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/4 "2008-03-24T18:22:32Z")
I just sanded the flame sensor with 600, reset the system and it fired right up three times in a row. I looked it up, another 15 dollar part if I replaced it (like the start/run cap I replaced on the cooling system this summer). That would have cost me $100 minimum if I called out someone. Thanks men! ---
**Author:** ![Bravada\_442](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bravada_442/32/5982_2.png) [@Bravada\_442](https://forums.speedlife.net/u/Bravada_442)\ **Post date:** [March 24, 2008, 6:38pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/5 "2008-03-24T18:38:26Z")
Flame sensors on those Bryant 310/311 models are pieces of shit. Keep an eye on that sensor it will do that pretty much every heating season or 2 until you get rid of that furnace. > [@TW:93 Del Sol S (auto)](https://forums.speedlife.net/t/tw-93-del-sol-s-auto/35095/17): > > where are your condensation lines running? find the main one… :hsugh: 80% furnaces are not condensing furnaces, just an FYI ---
**Author:** ![Bravada\_442](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bravada_442/32/5982_2.png) [@Bravada\_442](https://forums.speedlife.net/u/Bravada_442)\ **Post date:** [March 24, 2008, 6:40pm UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/6 "2008-03-24T18:40:29Z")
> [@TW:93 Del Sol S (auto)](https://forums.speedlife.net/t/tw-93-del-sol-s-auto/35095/17): > > where are your condensation lines running? find the main one… :hsugh: 80% furnaces are not condensing furnaces, just an FYI ---
**Author:** ![JackdUp](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jackdup/32/6015_2.png) [@JackdUp](https://forums.speedlife.net/u/JackdUp)\ **Post date:** [March 25, 2008, 5:38am UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/7 "2008-03-25T05:38:30Z")
Still got heat this morning. Thanks again guys. > [@Roc V Blo Possible Track Day Poll](https://forums.speedlife.net/t/roc-v-blo-possible-track-day-poll/35617/7): > > Flame sensors on those Bryant 310/311 models are pieces of shit. Keep an eye on that sensor it will do that pretty much every heating season or 2 until you get rid of that furnace. Or until I move out to leave it for the next rube. 😃 I’ll tape a piece of sandpaper to the side of the cold air return with a note. > [@Roc V Blo Possible Track Day Poll](https://forums.speedlife.net/t/roc-v-blo-possible-track-day-poll/35617/7): > > :hsugh: > > 80% furnaces are not condensing furnaces, just an FYI I couldn’t find one of those on this model. It’s a 395CAV\*\*\*\*\*\* ---
**Author:** ![Bravada\_442](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/bravada_442/32/5982_2.png) [@Bravada\_442](https://forums.speedlife.net/u/Bravada_442)\ **Post date:** [March 25, 2008, 9:07am UTC](https://forums.speedlife.net/t/hvac-guys-need-advice-again-d/196319/8 "2008-03-25T09:07:47Z")
> [@I need a Credit Card, which one to get?](https://forums.speedlife.net/t/i-need-a-credit-card-which-one-to-get/35623/20): > > I couldn’t find one of those on this model. It’s a 395CAV\*\*\*\*\*\* They re-classified their numbering structure a couple of years ago. I figured it might be newer than it is, but apparently not. 395 and 311 model furnaces are very very similar internally. Just a base model, single stage 80% furnace.