220v/380v 5.5kw to18KW pool Heat pump /electric water heater Swimming pool and SPA heater. Operation sequence: turn on the water pump first, then turn on the thermostat. When shutting down, turn off the thermostat first, wait for a while (depending on the power of the thermostat, ranging from 10 seconds to 1 minute), and then turn off the water pump.
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