IV–30E01 Remote Controller Receive Failurec Error detection method1) When the indoor unit is connectedAn error is determined when no incoming communication is received for 3 minutes.• When 9 or more indoor units are wired into the remote controller group.• When inspection (inspection pin) or TEST (test pin) on the indoor control board is short-circuited.• When the non-volatile memory (EEPROM) is not inserted or has failed upon turning power ON.• Indoor control board failure2) When a water heat exchanger unit is connectedAn error may be assumed when no communication addressed to you is received for three minutes.• When power is not being supplied to the water heat exchanger unit.• When the parallel array address has not been set or is incorrectly set.• When the terminal resistor has not been set or is incorrectly set.• When the remote control wire is severed, short-circuited, has a ground fault or the wrong polarity.• When a source of noise is located nearby.• When the water heat exchanger unit’s control board or peripheral equipment is defective.d Troubleshooting1) When the indoor unit is connected1Auto-address 1-1 Is auto-addressing complete? Yes 1-2No 1-31-2 Has auto-addressing failed (warning displayed on outdoorunit)?OK 1-3NG 2-11-3 Perform pre-check before auto-addressing. (See “5. Reference Document”)2Group controlwiring2-1 Is this indoor unit group-controlled? Yes 2-2No 3-12-2 Are any indoor units wired into the remote controller groupturned OFF?Yes Turn power ONNo 2-32-3 Are 9 or more indoor units connected to one remotecontroller group wiring?Yes Repair wiringNo 2-42-4Was the remote controller group wiring modified afterauto-addressing was complete? Or, were group settingschanged using the remote controller properties settingmode?Yes 2-5No 3-12-5 No main unit present in remote controller group wiring → Repeat auto-addressing.3Indoor controlboard3-1 Is the inspection pin (CN062/CN071) or TEST pin (CN064)on the indoor control board short-circuited?Yes Eliminate short-circuitNo 3-23-2 Is an option board (CN060) or wireless remote controller(CN041) connected to the indoor control board?Yes 3-3No 3-53-3Does E01 disappear several minutes after disconnectingsaid connector on the indoor control board? (Whencontrolling with two remote controllers and the wirelessremote controller is the main, set the other remotecontroller as the main).Yes 3-4No 3-53-4 Replace the removed option board or wireless remote controller operating unit, wiring andall.3-5 Is the LED (D002) blinking on the indoor control board? Yes 3-6No 3-73-6Nonvolatile memory (EEPROM) on the outdoor main unit is not inserted, is incorrectlyinserted or is defective → Correct or replace nonvolatile memory and program it in theremote controller properties setting mode.3-7 Short-circuit or misrouting in indoor unit remote controllerwiring?Yes Repair wiringNo Replace indoor controlboard
