Low WaterWater level has fallen below anacceptable operating level.Increase pressure to normal range.If problem persists,call for serviceE37Lockout reference code. Refer to “In case of Prob-lem...” on page 8 for more information.Body text. The first sentence describes the lockout,the second sentence gives a possible cure, and thethird tells how to reset the lockout.Lockout message. Refer to “In case of Problem...”on page 8 for more information.Stand-by84°C61°CTarget = --WaterMasterENFRNLESITDEPLRUen7WaterMaster 25 - 35 - 45 - 70 - 85 - 120 : A1006482 - 664Y7300 • DUSER’S GUIDELOCKOUT SCREENIf a problem occurs, the Lockout screen replaces the Home screen. The backlight also remains on as longas the problem is not solved. Pressing any arrow button will return to the Home screen.Using the code located in the right bottom corner of the screen, troubleshoot the problem, either withthe table located in paragraph “In case of Problem...” on page 8, or with the Lockout code table in theInstaller’s Handbook (for the installer only).STAND-BY SCREENThis screen is displayed at start-up. It indicates that the WaterMaster is ready to respond when a demandis received.STATUS MESSAGESStand-by Indicates that the WaterMaster is ready to respond when a demand is received.DHW Demand A domestic hot water call has been received.Manual Operation The burner or circulators have manually been enabled in the Installer Menu.DHW Burner Delay The burner will not fire until the call blocking time has elapsed.DHW Setpoint Reached The burner is not fired because the supply/system water temperature exceedsthe setpoint. The domestic circulator continues to operate and the burner willfire again once the supply/system water temperature drops below the setpoint.DHW Post Pump The domestic hot water circulator is running to remove heat from the Water-Master at the completion of a call.Freeze Protection The burner is fired because the freeze protection feature has been activated.Freeze protection will end once the supply/system water temperature is raisedto16°C.Boiler Protection The burner firing rate is being reduced because of an excessive difference be-tween the appliance supply and return temperatures. The firing rate will beginincreasing once the temperature difference is less than25°C.Lockout Description The lockout which currently has the WaterMaster shut down is displayed