MCAC-KTSM-2009-03 Troubleshooting
Heat Recovery Ventilation 21
Check: whether Phase sequence error
Phase absent, phase error
Check: whether Lack of phase
Connect it well.
No
Check the connection between power supply and
terminal, is the voltage in outdoor terminal is 3 phase.
Yes
Change the order of two of the wires to power supply.
Switch on the unit again.
If the problem can not be solved, the main controller panel is defective
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