Daikin FTXL20G2V1B Service Manual

Also see for Inverter FTXL20G2V1B: Technical data Service manual Operation manual Technical data Installation manual

Contents

Daikin FTXL20G2V1B Service Manual Manual pdf 99 page image

Troubleshooting SiENBE04-925_A84 Service Diagnosis4.8 Outdoor Unit PCB AbnormalityRemote ControlDisplayE1Method ofMalfunctionDetection The system follows the microprocessor program as specified. The system checks to see if the zero-cross signal comes in properly.MalfunctionDecisionConditions The microprocessor program runs out of control. The zero-cross signal is not detected.SupposedCauses Defective outdoor unit PCB Broken harness between PCBs Noise Momentary fall of voltage Momentary power failure, etc.Troubleshooting 20/35 classCautionBe sure to turn off the power switch before connecting or disconnectingconnectors, or parts may be damaged.NOYESYES(R12161)YESNONOReplace the outdoor unitPCB.Ground the system.Zero-cross signalabnormality.Replace the outdoor unitPCB (1).Replace the harness.Check to see if the outdoor unit isgrounded.Is LED A blinking?Grounded?Is the harnessbroken?Turn on the power again.∗ Before you check the LED A,cancel the standby electricitysaving function by operatingfan operation with the remotecontrol.∗ Wait at least for 7 sec. afterturning on the power.