IV–60F04·06·08·12·13·17·18/H08 Outdoor Unit Temperature Sensor Error* H08 (temperature sensor for measuring the oil level) will only detect the oil surface with W-Multi.Re-check the settings if it is not the relevant model.Setting confirmation method: The [No.10] – [FirSt] – [Sub] display on the outdoor unit’s control board:It is not a W-Multi if this is set at [Sub 00].It is set for W-Multi if this is set at [Sub 01] or [Sub 02].* The two-inlet temperature sensor for the outdoor unit’s heat exchanger unit is only connected to the 3WAY.A F06 message will be issued if the outdoor unit is set as a 3WAY model but is a model other than a 3WAYmodel.In this event, the model setting must be checked and corrected.Setting confirmation method: The [No.10] – [2-3] display on the outdoor unit’s control board:Set at 3WAY if set at [02].Correct this if the outdoor unit is not actually a 3WAY model.If the setting is correct or if F06 is still issued after the setting has been corrected, refer to (1) and (2)below and carry out a normal malfunction check.c Error detection methodAn outdoor unit temperature sensor error constantly detects any broken wires or short circuits, and an error isdetermined when error conditions are met once.Error conditions are given below.Display Sensor name Severed wire detectionresistanceShort-circuit detectionresistanceF04 Compressor outlet temperature sensor (Note 1) 130Ω or lessF06Outdoor heat exchanger inlet temperature sensor 400kΩ or more 130Ω or lessOutdoor heat exchanger 2 inlet temperaturesensor (3WAY only) 400kΩ or more 130Ω or lessF08 Outside air temperature sensor 400kΩ or more 130Ω or lessF12 Compressor inlet temperature sensor 400kΩ or more 130Ω or lessF13 Coolant temperature sensor 62kΩ or more 22Ω or lessF17 Hot water outlet temperature sensor 400kΩ or more 130Ω or lessF18 Exhaust gas temperature sensor (Note 2) 130Ω or lessH08 Temperature sensor for oil level measurements(W-Multi only) 400kΩ or more 130Ω or lessNote 1: Detects severed wires in the compressor’s outlet temperature sensor.When the pressure is more than 1.0 MPa and the compressor’s outlet temperature is less than 6°C for 3consecutive minutes during complete combustion.Note 2: Detects severed wires in the exhaust temperature sensor.When the coolant temperature is ≥80°C, the exhaust gas temperature is ≤30°C and the exhaust gastemperature does not change for 5 minutes during complete combustion.d Troubleshooting1Checkinstallation1-1 Is the sensor correctly installed at the prescribed location?Yes 2-1No Repair2Checkwiring2-1 Poor connection/contact/crimping or broken wire or pinchedwire in sensor connector and wiring?Yes Repair wiringNo 3-13Checktemperaturesensor3-1Disconnect the sensor connector and measure the resistancevalue. Is the resistance between the broken wire detectionvalue and the short-circuit detection value?YesReplace the outdoormain board or outdoorpower board.No Replace temperaturesensor● For work procedure for replacing outdoor main board, see “5. Reference Document”.● For board and Electrical Wiring Diagram, see Chapter 6.• Outdoor main board: page VI-2• Outdoor power board: page VI-3• Converter board: VI-4• Indoor control board for DC motor models: page VI-5• Outdoor Unit Electrical Wiring Diagram: page VI-6
