ESIE05-03 General FunctionalityPart 2 – Functional Description 2–15324511.10 Test Run ControlPurpose When operating the RZQ units for the first time after installation, the unit will - depending on theselected operation mode - perform a test run operation first.Situation 1 Cooling - first operation after installation in "Cooling mode"Situation 2 Cooling - first operation after installation in "Test run mode"Situation 3 Heating - first operation after installation in "Heating mode"Situation 4 Heating - first operation after installation in "Test run mode"Remarks P When running in test run mode, the unit will sense on site installation parameters (e.g.: failure toopen stop valves,..) and indicate the applicable malfunction code if required.P If the remote controller shows E3, E4 or L8 as an error code, there is possibility that either the stopvalve is closed or the air flow outlet is obstructed.P Check the inter unit branch wiring connection (1-2-3 wiring) when the error code U4 or UF isdisplayed on the remote controller.P This "Test Run Control" function is only performed after first power on at installation or after firstpower on after a pump down by using the pump down switch is.Cooling thermostatONCooling operation in"Test run mode" for 3minutesNormal coolingoperationCooling Operation byTest run buttonCooling operation in"Test run mode" for 3minutesCooling operation inforced thermostatON.Heating thermostatONCooling operation intest run mode for 3minutesNormal heatingoperationHeating Operation byTest run buttonCooling operation intest run mode for 3minutesHeating operation inforced thermostatON.
