Atwood 8940 Iii Dclp Troubleshooting

Atwood / Hydro Flame Furnace Model 8940-AC-III Tune-Up Kit comes in two variations. The first (Kit #1) has a single sense electrode (one wire that goes to the electrode), the second (Kit #2) has a dual sense electrode (two wires that go to the electrode). Please verify which kit is applicable to your furnace prior to ordering

We have an Atwood 8940-III-DCLP which has a built in relay on the board so I searched around and found that Dinosaur electronics sells a new 50 Fan plus pin model that substitutes well. I found that ASAP Parts, Inc. Had the best price at $107 including shipping UPS. LITERATURE NUMBER MPD 31232 hydro flame TM 8900-III-LD Series Furnace MODELS 8935, 8940 Technical Installation Manual ENGLISH, FRANCAIS.Installation (et Canada) Effective 3/08 THIS INSTRUCTION MANUAL IS FOR USE BY AN AUTHORIZED SERVICE TECHNICIAN TO INSTALL AN ATWOOD - hydro flame TM INDEX FURNACE.

Tune-Up Kit #1 (Single Sense Electrode):

  • Item #36 Sail Switch 36680 (31377)

Nov 16, Atwood III-dclp: I am getting the 3 flashes on the circuit board indicating an ignition lockout fault. Originally the blower would start, the furnace would ignite temporarily, then shut off after a few seconds, repeat this 3 times and then the blower would turn off.4/5. Become a Patron: and Tool Links: Manuals: https://myrvwo.

Tune-Up Kit #2 (Dual Sense Electrode):

  • Item #36 Sail Switch 36680 (31377)

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Troubleshooting

Item# 2 Thermostat, Brown 38452 NLA

Item# 2 Thermostat, White 38453

Item# 3 Duct Cover 31361

Item# 4 Duct Adapter, 4 Inch 31474

Item# 6 Orifice 31077

Item# 7 Combustion Air Wheel 33128

Item# 9 Motor Gasket 37713

Item# 10 Gas Valve 31159, AC Models Only, Before S/N 0657716

Item# 10 Gas Valve 38603, AC Models Only, After S/N 0657715

Item# 19 DSI Board Bracket 34541

Item# 20 Slide Plate 37442 After S/N 0657715

Item# 21 Circuit Breaker 35791, 5 Amp

Item# 22 Screw Latch 33847

Item# 23 DSI Module Board (24VAC Ignition Board) 37515

*Not Shown* Wiring Harness Kit 30232

Item# 27 Blower Housing

Item# 34 Motor Kit, AC Voltage 30132 (Replaces P# 35122)

Item# 36 Sail Switch 36680

Item# 37 Draft Cap (Exhaust) 38141

Item# 42 Capacitor 34039

Item# 45 Exhaust Wall Gasket 37956

Item# 50 Blower Wheel 34099

Item# 51 Electrode (Single Sense) 34570

Atwood 8940 Iii Dclp Troubleshooting

*Not Shown* Single Sense Electrode Gasket 37100

Item# 51 Electrode (Dual Sense) 36997

*Not Shown* Dual Sense Electrode Gasket 32172

Item# 52 Limit Switch 37021

Atwood 8940 Iii Dclp Troubleshooting

Item# 53 Burner Assembly 35491

Item# 55 Blower Assembly 34014

Item# 58 Transformer 35121

Item# 60 Igniter Lead 34571

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