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Atwood 8535 heater

prento
Explorer
Explorer
Hi all,Attwood 8535-iv dclp heater problem on my rv,the heater will start up(fan going)but is having trouble lighting the furness sometimes it lights then it cuts out and stops,if you look at the circuit board outside next to the heater there is a red warning light on the circuit board that flashes 3 times off and on,any ideas what the problem is.
5 REPLIES 5

Bird_Freak
Explorer II
Explorer II
Mine did the same thing.
Circuit board. Replace it with a Dinosaur. Much better than OEM.
Eddie
03 Fleetwood Pride, 36-5L
04 Ford F-250 Superduty
15K Pullrite Superglide
Old coach 04 Pace Arrow 37C with brakes sometimes.
Owner- The Toy Shop-
Auto Restoration and Customs 32 years. Retired by a stroke!
We love 56 T-Birds

Old-Biscuit
Explorer
Explorer
RED LED Flashing 3X....Ignition Lockout Error Code

Circuit board WET?
Dry it using Hair Dryer...then try again
If it works you might want to consider a Relocation Kit
(Atwood KIT includes a NEW circuit Board WITH a plastic Bracket that lifts circuit board up....make your own bracket)

Relocation Kit...circuit board is generic to almost all Atwood furnaces/7900 thru 8900 AFS, AFM, AFL...

If not WET....circuit board is at fault
Dinosaur Electronics Fan50Plus Circuit board for replacement
Better quality circuit board

Dino Fan50Plus
Is it time for your medication or mine?


2007 DODGE 3500 QC SRW 5.9L CTD In-Bed 'quiet gen'
2007 HitchHiker II 32.5 UKTG 2000W Xantex Inverter
US NAVY------USS Decatur DDG31

2oldman
Explorer
Explorer
Your Betty Furness may be on its way out.
"If I'm wearing long pants, I'm too far north" - 2oldman

enblethen
Nomad
Nomad
Clean the contacts on the circuit board with a white pencil eraser
Clean the electrode/flame sensor. make sure it is adjusted correctly.
Clean the burner area.
If running off battery, insure it is charged

Bud
USAF Retired
Pace Arrow


2003 Chev Ice Road Tracker

wanderingaimles
Explorer
Explorer
Maybe a search online for a troubleshooting guide, or this overall atwood guide which includes other appliances Atwood

Also a check on you tube will give quite a bit of info on troubleshooting those units.
Good luck.