Staff Answer
Sep 28, 2026 - 06:15 AM
Your heaters reading 60.5 ohms is normal, so they're not the cause. The 5 amp fuse protects the 12V side, so something on 12V is shorted. Unplug the 12V loads one at a time (igniter, gas valve, ice maker, interior light, fans) and put in a new fuse each time. If the fuse holds after you unplug one, that part or its wiring is the problem. If it still blows with everything unplugged, the board is bad. For a 1200 with a serial between 832172 and 8981138, the 621271001 power board or Dinosaur 6212XX fits.
If you have any questions, just reach out at info@rvfridgeguys.com or call us at 800-712-8822. You can find everything we carry at www.rvfridgeguys.com.
