802253UK - Boiling chilled residential installation instructions - Aug 2015 - V2.02 Page 33 of 36Trouble shootingSystem faultmessage Possible cause SolutionsPower Board Fault Electrical disruption Check power supply and all fusesInterface Fault Internal fault Call Zip ServiceLevel Board Fault Internal fault Call Zip ServiceCondenser Screen Blocked Blocked air filter Remove blockage / clean filter / check user guideWater leak, Isolate Mains Water leak Turn off mains water supply / call for serviceCompressor Over Run Compressor too hot Check ventilationWater Supply Failure No water Check water supply is turned ONHot Sensor Open Internal fault Call Zip ServiceHot Sensor Closed Internal fault Call Zip ServiceCold Sensor Open Internal fault Call Zip ServiceCold Sensor Closed Internal fault Call Zip ServiceFlood Sensor Open Internal fault Call Zip ServiceCondenser Sensor Closed Internal fault Check ventilation / call Zip ServiceCondenser Sensor Open Internal fault Check ventilation / call Zip serviceHeater Fuse / Driver Fault Internal fault Call Zip ServiceHeater Driver Fault No hot water Call Zip ServiceCompressor Driver Fault No chilled water Call Zip ServiceHot Sensor Degraded Internal fault Call Zip ServiceCondenser Overtemp Blocked air filter Remove blockage / clean filter / check user guideA DC Pump is faulty Internal fault Call Zip ServiceSteam too Cool Internal fault Call Zip ServiceSteam Sensor Open Internal fault Call Zip ServiceSteam Sensor Closed Internal fault Call Zip ServiceHot Tank Over filled Internal fault Call Zip ServiceComp Fuse/Driver Fault Internal fault Call Zip ServiceHot Tank Under filled Low water pressure Check water supplyBoil Dry Protection Safety activated Turn OFF/ON power to resetFlash Memory corrupted Internal fault Call Zip ServiceFlow Sensor Fault Internal fault Call Zip ServiceCall an electrician, a plumber, or Zip on 0845 6 005 005 or 0345 6 005 005 for assistance, service, spare partsor enquiries.