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The symbolindicates that defrosting is functioning.6.2.4 Electric Assistant Heater:The symbol indicates the electric assistant is working.6.2.5 Error Code Display:When an error occurs, an E:XX appears on the time display area and it willshow with water temperature in alternative.6.3 Protection Function:6.3.1 Release Temperature (compressor overheat protection)When the release temp of compressor is higher than 120℃, compressor, fanmotor, and water pump will be stopped and will not restart automatically;6.3.2 Communication ProtectionIf an error happens to the communication between heat pump and thecontroller and lasts for one minute, then error code E10 will appear and the unitstops running.6.3.3 Water Pump Anti-freezing:To prevent external pipe gets frozen:If the water outlet pipe temperature is sensed to be lower than 7℃, then thewater pump will be activated for 1minute; for an interval of 3minutes, if thistemperature gets higher than 12℃, the water pump will be stopped; if not, thiscirculation keeps going on.6.3.4 Pressure release protection:When the release temperature gets to 105 ℃ , the fan will stop; when thetemperature drops to 95 ℃ , the fan starts again. But the fan cannot stop longer than10minutes; the controller will command the fan to run for 1minute after it hasstopped for 10minutes, and recycle until the release temperature is lower than 95℃.If the temperature keeps rising during the process of pressure release to 115 ℃ , thecompressor will stop and error shows up to stop the heat pump.Page 13 of 19