Lochinvar ICM RLY2090 AP7811 Pool/Spa Heater PCB Display Control Board Panel. Used in Excellent Working Condition. Lochinvar ICM RLY2090 AP7811 Pool Heater PCB Display Control Circuit Board? EChecks must clear before item(s) are released. Tracking information will be available upon request. We do our best to ensure the accuracy of every listings. Unfortunately, do to our high volume, mistakes sometimes occur. Auctiva offers Free Image Hosting and Editing. Auctiva gets you noticed! Track Page Views With.