A28 Generator Error (For Only High Power Multi - Panasonic 2WAY Multi Technical & Service Manual

A28 Generator Error (for only High Power Multi)

Error detection method
A 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.
Troubleshooting
1
Is the generator belt connected to the engine? Is it
1-1
Generator belt
slipping, etc?
check
1-2 Is the generator making any strange noises?
2
Does the generator have a severed wire or a short-circuit?
Generator
2-1 (The resistance for each phase on the generator terminals
check
should normally be between 1.5 and 2.0Ω.)
• It is possible to perform back-up operations (operations as a standard unit) with the following operations
during 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 (no
generator)].
• Perform the following operations to restore the unit to generate power (normal high-power function
operations)
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-up
operations.)
3. Set [Gen (generator parameter)] on the [No.10 First] outdoor unit initialization settings to [1 (generate
power)].
IV–28
Yes 1-2
No 2-1
Replace the belt and the
Yes
generator
No Replace only the belt
Yes Replace the generator
Replace the generator
No
wiring