Atwood AFMD30121 furnace parts reference. The Atwood AFMD30121 is a 30,000 BTU AFM-series LP-gas furnace with a low-profile small-vent arrangement. This illustrated parts reference retains the original component callouts, with entries that could not be corroborated for this configuration excluded from this version.

Confirm the complete furnace identification plate and serial number before ordering; a drawing position can represent alternative door, vent, switch or thermostat configurations. The part numbers below are identification references rather than a guarantee of current availability or approved interchangeability.

AFMD30121 exploded furnace assembly

Atwood AFMD30121 30,000 BTU furnace exploded diagram showing numbered service parts
Use each illustration callout alongside the parts table.
Reference Manufacturer part number Quantity Original component description
1 30335 1 CIRCUIT BREAKER 10 AMP
5 36688 1 DUCT ADAPTER 2 INCH
6 31474 1 DUCT ADAPTER 4 INCH
7 30205 1 ADAPTER PLATE KIT, SIDE DISCH
8 30261 1 BOTTOM PLATE ADAPTER ASM.
9 31361 1 DUCT COVER PLATE, 4 INCH
10 35100 1 ELECTRODE ASM. SMALL
11 35710 1 HEAT EXCHANGER KIT, M
12 31244 1 CASING LEG
13 35706 1 GAS LINE GROMMET
14 30268 1 BURNER HEAD, LP GAS
15 31501 1 ELECTRONIC IGNITION BOARD
15 32353 1 UNIVERSAL IGNITION DC SMT
16 35712 1 MANIFOLD EXT ASM KIT, SML
NS 32349 1 MANIFOLD, INLET SMALL
17 30722 1 MOTOR KIT
18 31081 1 ORIFICE KIT, #52 LP
19 31091 1 LIMIT SWITCH, 190 DEGREE
20 31094 1 SAIL SWITCH KIT, SML-WHITE - Serial# 724 and below
21 32300 1 THERMOSTAT, HEAT ONLY, BLACK
21 38452 1 T-STAT HEAT ONLY - BROWN
21 38453 1 THERMOSTAT HEAT ONLY - WHITE
23 31098 1 VALVE 12VDC TOP SMALL
24 31273 1 VENT KIT, LD 1.10 V4
26 30583 1 VENT KIT, LD 1.10 V3
27 30940 1 VENT KIT, LD 1.10 V4 MW
29 30197 1 VENT COVER PANEL SM V2-W
29 30456 1 VENT PANEL EXTENSION SML V3
29 30457 1 VENT PANEL EXTENSION SML V3
30 30611 1 VENT PANEL EXTENSION SML V4
31 33128 1 COMBUSTION AIR WHEEL
32 33126 1 BLOWER WHEEL KIT
33 31114 1 WIRING HARNESS, DC
NS 31923 1 VENT PANEL EXTENSION SM V1

See the parts in this guide

Browse photos from these NewRVParts product listings. Match the manufacturer number on the diagram and check your appliance model and serial number before ordering.

Dometic 36688 Atwood 2-Inch RV Furnace Duct Adapter — manufacturer 36688, catalog listing image on AFMD30121 furnace parts guideDometic 36688 Atwood 2-Inch RV Furnace Duct AdapterPart 36688 · 2-inch duct adapter; compare the duct outlet and original fitting.
Atwood 31474 Aluminum 4-Inch RV Furnace Duct Collar — manufacturer 31474, catalog listing image on AFMD30121 furnace parts guideAtwood 31474 Aluminum 4-Inch RV Furnace Duct CollarPart 31474 · 4-inch duct adapter; not interchangeable with the 2-inch collar.
Dometic 31361 4-Inch RV Furnace Duct Knockout Cover Plate — manufacturer 31361, catalog listing image on AFMD30121 furnace parts guideDometic 31361 4-Inch RV Furnace Duct Knockout Cover PlatePart 31361 · 4-inch duct cover plate; different from an open duct adapter.

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