• Get Your Parts Fast! Place your order before 4PM EST and it will ship on the same or next business day.

Navigate to the parts4heating.com homepage

CALL 800-536-1582

For a faster response Email Us

You are here:Home
Atwood Hydro-Flame 33488, Atwwod Hydro-Flame 31501, Fenwal 35-535811-113, Dinosaur FAN50PLUS Fan 50 Plus, 12 VDC Gas Ignition Drop-in Replacement Kit For Atwood Hydroflame Furnaces

Fenwal 35-535811-113 Ignition Control, Direct Spark, Local Sense, 3-Try 7 Second TFI, 15 sec pre and inter-purges

Fenwal Controls Inc.
0 Reviews
$0.00
$238.97
You save $0.00!

Important:Use ONLY in Atwood Hydroflame furnaces that specify part number 31501 or 33488, which are Fenwal Part Number 35-535811-113. Any other use voids the product warranty and the agency listings, and can be hazardous.


Product Code: 35-535811-113

Fenwal 35-535811-113

12 VDC Gas Ignition Drop-in Replacement Kit
For Atwood Hydroflame Furnaces
Ref. Atwood 31501 Kit

The Fenwal 35-535811-113 is a 12 VDC Direct Spark Ignition Control designed for use in Atwood RV gas furnaces. The control utilizes a microprocessor to continually and safely monitor, analyze and control the proper operation of the gas burner. Integrated combustion blower control provides automatic backward compatibility with older models.

  • Certified to ANSI Z21.20-1998 and CAN/CSA C22.2 No. 199-M89
  • Recognized to UL372 – Software conforms to UL1998

This kit includes the genuine Fenwal OEM control and is a direct substitute for Atwood furnace board kit 31501. The control board carries UL and CSA certification listings, unlike other aftermarket replacement controls that have limited or no safety agency certifications.

Item DescriptionPart NumberAtwood #
Control, Gas Ignition35-535811-11333488
Board, Adapter
06-220041-00133727
Installation Instructions and Warranty
06-237326-001N/A


Adapter board 33727 makes this kit compatible with pre-2004 furnaces using Atwood Edge Connector style board 37875.

Fenwal Gas Ignition boards must be installed by a certified technician only. Follow installation instructions exactly.

INPUT VOLTAGES

DESCRIPTION

Input Power

Control:9.0to15VDCfromastorage batteryorRVpowerconverter

Input Current Drain

300 mA @ 12 VDC, combustion blower andgas valve relays energized (control only)

Gas Valve Rating

1.0A @ 12 VDC

Combustion Blower Rating

20.0A @ 12 VDC

Operating Temperatue

-40°F to +176°F ( -40°C to +80°C)

Flame Sensitivity

0.7μA minimum

Flame Failure Response Time

0.8 seconds maximum

Types of Gases

Natural, LP, or manufactured

Spark Rate

16 sparks per second

Size (LxWxH)

4.25 x 3.25 x 1.80 inches10.80 x 8.25 x 4.57 cm

Enclosure

Uncovered with integral standoffs

Moisture Resistance

Conformalcoatedtooperateto95% R.H.(Non-Condensing)

Alwaysavoiddirectexposuretowater.

Tries for Ignition


three

Trial for Ignition Period

7 seconds

Prepurge & Inter-purge Timings

15 seconds

Postpurge Timings

90 seconds

  • Certified to ANSI Z21.20-1998 and CAN/CSA C22.2 No. 199-M89
  • Recognized to UL372 – Software conforms to UL1998


Troubleshooting

Warning!Risk of Explosion or Fire

The Fenwal 35-535811-113 control cannot be serviced by the user. If any control faults are detected, the Fenwal 35-535811-113 control must be replaced by qualified service personnel. Risk of explosion or fire can result if the control module has been opened or with any attempts to repair it, and the warranty is void

Before troubleshooting the system, check the following items:

  • Verify all mechanical and electrical connections are secure and tight.
  • Verify all system wiring is correct.
  • Verify there is a proper system ground. The igniter, flame sensor, and ignition module must share a common ground with the burner. Nuisance shutdowns are often caused by a poor or erratic ground.
  • Perform the instructions in “Checkout” on page 3, as the first step in any troubleshooting.
  • Verify that the system is powered and that the thermostat is calling for heat.
  • If the control proceeds toan error code on the red diagnostic LED, troubleshoot per the Fault conditions table below:
Fault Conditions
LED IndicationFault Mode
OffNormal Operation
1 FlashBlower or Airflow Fault
2 FlashesFlame without Call for Heat
3 FlashesIgnition Lockout
Steady OnInternal Control Failure

The LED will flash on for 1/4 second, then off for 1/4 second during a fault condition. The pause between fault codes is 3 seconds.


SymptonRecommended Actions
1. Dead
  1. Miswired
  2. Transformer/battery bad
  3. Fuse/circuit breaker bad
  4. No voltage at PWR or AIR
  5. Bad control
2. Thermostat on - No blower output
  1. Miswired or failed air flow switch
  2. Bad thermostat no voltage at TH
  3. Bad control
3. Airflow Switch input okay, but no trial for ignition after purge delay
  1. Miswired
  2. Bad control
4. Valve on, no spark
  1. Shorted electrode
  2. Open HV cable
  3. Miswired
  4. Bad control
5. Spark on, no valve
  1. Valve coil open
  2. Open valve wire
  3. Bad control (check voltage between V1 and GND)
6. Flame OK during TFI, no flame sense (after TFI)
  1. Bad electrode
  2. Bad HV wire
  3. Poor ground at burner
  4. Bad control

Fenwal 35-535811-113 Installation Manual

Dimensions:

Wiring Diagram:

Atwood Furnace Models Supported:

The Fenwal 35-535811-113 kit allow for direct replacement of the furnace control in the following Atwood furnaces:
  • 7912-II, 7916-II, 7920-II
  • 8012-II
  • 8516-I, 8520-I, 8525-I
  • 8516-II, 8520-II, 8525-II
  • 8516-III, 8520-III, 8525-III
  • 8516-IV, 8520-IV, 8525-IV
  • 8531-I, 8535-I
  • 8531-II, 8535-II
  • 8531-III, 8535-III
  • 8531-IV, 8535-IV
  • DC8225, DC8232, DC8235, DC8241
  • DC89-I, DC89-II, DC89-III
  • FA-72D, FA-76D, FA-79D
  • FA-7825, FA-7832, FA-7835, FA-7841
  • HF-80D

Limited Warranty

Product: Fenwal 35-535811-113 12VDC Gas Ignition control

Service: Applicable Atwood Hydro Flame RV furnaces ONLY.

Kidde-Fenwal, Inc., d/b/a Fenwal Controls (hereinafter "Fenwal") warrants to the original purchaser that the enclosed Product will be free from defects in materials and workmanship and that it shall conform to specifications published by Fenwal for a period of four years. The warranty period begins on the date of purchase and is valid only for Products purchased from an authorized Fenwal dealer.

Fenwal's sole liability and obligation under this warranty shall be to replace the Product through the original Fenwal dealer. All claims must be pre-approved by the dealer, use the dealers returned goods process and includedated proof of original purchase listing the Product (receipt or invoice). For a claim to be validated, the Product:

  • Must be within the warranty period
  • Must show no evidence of physical damage, overstress, repairs or modifications

This warranty applies solely to Products used in Atwood hydroflamefurnaces specifying Atwood part number 31501 or 33488 and installed and operated in strict compliance with the Fenwal installation instructions. This warranty does not extend to the furnace or the furnace components.

This warranty shall not apply ifthe Product has been damaged, modified, abused or altered after the date of purchase.

ANY DEVIATIONS OR OTHER USE VOIDS THE PRODUCT WARRANTY, VOIDS THE AGENCY LISTINGS OF THE PRODUCT, VOIDS THE AGENCYLISTINGS OF THE FURNACE, AND CAN BE HAZARDOUS.DISCLAIMER OF WARRANTIESFENWAL MAKES NO WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE WITH RESPECT TO THE PRODUCTS DELIVERED HEREUNDER, NOR IS THERE ANY OTHER WARRANTY, EXPRESSED OR IMPLIED, EXCEPT FOR THE WARRANTY DETAILED ABOVE. IN NO EVENT SHALL FENWAL BE LIABLE TO PURCHASER OR ANY OTHER PERSON (A) FOR CONSEQUENTIAL, INCIDENTAL OR SPECIAL DAMAGES OR (B) FOR DIRECT DAMAGE, OTHER THAN AS EXPRESSLY SPECIFIED ABOVE. FENWAL'S AGGREGATE LIABILITY ARISING FROM THE SALE OF THIS PRODCUCT ORUNDER THIS LIMITED WARRANTY, WHETHER IN TORT, CONTRACT OR OTHERWISE, SHALL NOT EXCEED THE PRICE PAID BY PURCHASER FOR THE GOODS SOLD HEREUNDER.

Fenwal is a registered trademark of Kidde-Fenwal, Inc.Hydro Flame is a trademark of Atwood Mobile Products.All other trademarks are property of their respective owners.

Reviews

Average Customer Review:
( 0 )