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Q: Switch trip again and again, how to solve this problem?
1. Check if Switch trip immediately happened once the power turn on or if Switch trip happened when any of the following devices turn on，water pump, compressor or fan.
2. Check if Switch trip happened when any of the following devices turn on Filling water valve, Return water valve or Water supply valve.
3. After finding out the devices that may lead to the Switch trip, then check if there is short circuit to this devices cables, or check if the devices failed to connected to the Earth leakage circuit breaker. Or check if there is already short circuit inside the devices.