Page 12013.4 Domestic Hot Water Fault Finding TableCheckNo.Item to check Answer Corrective Action (s)1 Is AC Power Supply healthy to theappliance and LCD operational?No Rectify AC Power supply problemYes Go to Check 22 Are Error Codes displayed on LCD? Yes Rectify Error Code problems, see Section 13.1No Go to Check 33 Is the DHW Tap symbol displayed solidon the boiler LCD?No Press Mode Button to select DHW modeYes Go to Check 44 Is external timeclock in 'ON' time? No Adjust 'ON' time period to call for Domestic Hot WaterYes Go to Check 65 Is internal timeclock in 'ON' time? No Adjust 'ON' time period to call for Domestic Hot WaterYes Go to Check 66 Is the DHW Tap Symbol displayedflashing on the boiler LCD with all DHWoutlets closed?YesThe Boiler is performing DHW mode, wait untilcompleteNo Go to Check 77 Is the DHW Tap symbol displayedflashing on the boiler LCD with DHW flowof over 2 litres/minute?NoCheck wiring to, and obstructions in the DHWflowmeterYes Go to Check 88 Is the circulating pump running with 1xgreen and at least 1x amber LED?No Check Circulating Pump connectionsYes Go to Check 99 Is the DHW Flow temperature setcorrectly for the installation? NoAdjust with DHW +/- buttons to set temperature asrequiredYes Go to Check 1010 Is the Diverter Valve Actuator in theDHW (Extended) position? Section 4.3.2No Check Diverter Valve Actuator ConnectionsYes Go to Check 1111 Are the isolating valves within the boileropen?No Open the valves to allow water flowYes Go to Check 1212 Are the property DHW isolation valvesopen?No Rectify the isolation valve positionsYes Go to check 1313 Is all air vented from the boiler? No Vent air from the boiler at all locationsYes Go to Check 1414 Check burner operation, lockout isindicated by Error Code E01, as part ofCheck 2
