Norcold Optical Board 639509 (fits N7V models)

Daily use: ' + f.ah + ' Ah/day in warm weather × ' + cl.m + ' for your temperature' + (st.loads ? ' + ' + st.loads + ' Ah of other loads' : '') + '. A compressor cycles on and off, so it uses far less than its nameplate amps × 24 hours.
Solar: daily watt-hours ÷ (' + r.sun + ' sun hours × 75% real-world efficiency), rounded up to whole panels. Flat roof panels get less sun in winter.
Battery: daily use × ' + st.days + ' day' + (st.days > 1 ? 's' : '') + ' of backup ÷ ' + Math.round(r.batt.dod * 100) + '% usable capacity for ' + (st.batt === 'li' ? 'lithium' : 'AGM') + '.
Controller: panel watts ÷ 12V × 1.25 safety margin.

Optical Board (N7V, NA7V models)

Norcold N7/ NA7/ N7X Circuit & Control Boards (N7V, NA7V models)

The control boards run your Norcold N7/ NA7/ N7X: the power board switches the heaters, ignition and modes, and the front (optical/eyebrow) board is the control panel you use to set it. Common signs of a bad board are a dead or flickering display, no AC or no LP operation, fault codes, or burn marks on the board.

Check fuses and your 12V supply first, then match the part number on your existing board to the board you order.

Can't find the part you need? Contact us with your model and serial number and we'll help you track it down.