IV–28A28 Generator Error (for only High Power Multi)c Error detection methodA generator error may be assumed if an error occurs with the generator or the generator belt.• Phase interruptions occur owing to the generator wiring being severed.• A short-circuit has occurred between the generator wiring or inside the generator.• When a defect, such as no generator belt or a severed generator belt, exists.• When the cooling fan has been disconnected or when a fan for another engine has been installed.d Troubleshooting1Generator beltcheck1-1 Is the generator belt connected to the engine? Is itslipping, etc?Yes 1-2No 2-11-2 Is the generator making any strange noises? Yes Replace the belt and thegeneratorNo Replace only the belt2Generatorcheck2-1Does the generator have a severed wire or a short-circuit?(The resistance for each phase on the generator terminalsshould normally be between 1.5 and 2.0Ω.)Yes Replace the generatorNo Replace the generatorwiring• It is possible to perform back-up operations (operations as a standard unit) with the following operationsduring break-downs.1. Disconnect the generator belt.2. Disconnect all converter wires.3. Set [Gen (generator parameter)] on the [No.10 First] outdoor unit initialization settings to [3 (nogenerator)].• Perform the following operations to restore the unit to generate power (normal high-power functionoperations)1. Install a generator belt and check the tension (see the Regular Replacement Manual.)2. Reconnect off converter wires. (1 and 2 are only used when replacing parts and during back-upoperations.)3. Set [Gen (generator parameter)] on the [No.10 First] outdoor unit initialization settings to [1 (generatepower)].
