E12 Overload

  • 产品详情

Fault action

1 Display fault

2 Stop all outputs except water pump


Fault handling

This function is only available for three-phase machines

1 The current is too high. Check whether the condenser ventilation and heat dissipation and water flow are good

2 Is the ambient temperature higher than 43℃ when cooling and higher than 24℃ when heating

3 Check the AC contactor and thermal overload relay

4 Is the compressor reversed? Are the OFL/COM plug and wiring reliable?

Previous: E11 Phase sequence fault
Next: E13 Water flow failure
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