Dometic / Atwood Direct Spark Ignition (DSI) Control Circuit Board - 31501 (Superseded #38676)

Restore reliable furnace ignition and fan operation with this Dometic Ignition Control Circuit Board, engineered for use in Atwood and Hydro Flame RV furnaces equipped with Direct Spark Ignition (DSI). This 12-volt control board manages spark ignition and furnace blower sequencing, helping ensure safe startups and consistent heating performance.

This replacement board includes integrated fan control and an on-board relay for proper ignition timing and blower operation. Two mounting spacers are included for secure installation.

This part replaces #38676.

Important:

• Excludes 2-stage furnaces
• Excludes AC models
• Does NOT include Green Pin Adapter Part #35325 (order separately if required)

Key Features:

• 12-Volt DSI ignition control board
• Designed for single-stage Atwood / Hydro Flame furnaces
• Integrated fan control
• On-board relay for ignition and blower sequence
• Includes two mounting spacers
• Direct OEM-style replacement

Common Symptoms of a Failing Control Board:

• Furnace clicks but does not ignite
• Blower runs continuously without flame
• Furnace locks out after ignition attempt
• Intermittent or no heat
• No response from thermostat

Replacing a failed ignition board is one of the most common fixes for Atwood DSI furnace ignition problems.

Compatible Furnaces

Compatible with the following Atwood / Hydro Flame / Dometic single-stage Direct Spark Ignition (DSI) models:

Atwood Hydro Flame Series:
7912-II
7916-II
7920-II
8012-II
FA7912D
FA7916D
FA7920D
HF8012D

Dometic / Atwood DC & FA Series:
DC8225
DC8232
DC8235
DC8241
FA76D
FA7615D
FA7825
FA7832
FA72

Hydro Flame 8500 Series:
8500-IV Series
8500-III Series
8500-II Series
8500-I Series

Hydro Flame 8900 IDC Series:
8900-IDC Series
8900-IIDC Series
8900-IIIDC Series

Atwood / Dometic AFSD & AFMD Series:
AFSD12 Series
AFSD16 Series
AFSD20 Series
AFMD20 Series
AFMD25 Series
AFMD30 Series
AFMD35 Series

Dometic DFMD & DFSD Models:
DFMD20111
DFMD25111
DFMD30111
DFMD35111
DFSD12111
DFSD16111
DFSD20111

Always verify your furnace model number and confirm it is a single-stage DSI system before ordering.

What’s Included:

• (1) 12V Ignition Control Circuit Board
• (2) Mounting Spacers

Green Pin Adapter #35325 sold separately if required for your wiring harness.