Installing a new power control board is a straightforward process, but caution is required. Before starting, ensure the refrigerator is turned off and disconnected from both its AC and DC power sources. Remove the lower exterior vent panel of your RV to access the back of the refrigerator, then locate and remove the control board's protective cover.
12V DC enters via the terminal block (protected by a 3-amp glass blade fuse). rm28525 schematic diagram updated
[ 120V AC Shore Power ] │ ▼ ┌───────────────┐ │ 5-Amp AC Fuse │ └───────┬───────┘ │ ┌──────────────┴──────────────┐ │ RM28525 CONTROL BOARD │◄──── [ Eyebrow Control Panel ] └──────┬──────────────┬───────┘ │ │ ▼ ▼ [ AC Heater ] [ Gas Valve ] ──► [ Thermofuse / Thermal Switch ] │ ▼ [ Burner Igniter ] │ ▼ [ 3-Amp DC Fuse ] ──► [ +12V DC Battery Input ] Critical Circuit Paths Installing a new power control board is a
Have you encountered a mysterious failure on the RM28525? Let us know below. And if you found this breakdown useful, please share it with your engineering team. 12V DC enters via the terminal block (protected
A multi-pin ribbon cable linking the main board to the front display panel.
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A robust mechanical relay triggered by the 12V DC logic circuit. When closed, it passes 120V AC directly to the heating element output terminals (typically marked as J7 and J8, or HT1 and HT2). Low-Voltage (12V DC) Control Section