Toyotomi CCT 140IUINV, Руководство по обслуживанию

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Troubleshooting
126
Electrical Control System
2.4.3.5. E5 malfunction(For single phase units)
Voltage protection
Check the voltage of
outdoor unit power supply,
whether the voltage
between L(1) and N is about
220~240VAC
Check the power supply
Check whether the voltage
of IPM board P and N is
normal? DC277-410V
Replace bridge rectifiers,
and then check whether the
system can run normally
Replace IPM board, and
then check whether the
system can run normally
Replace outdoor main board
Yes
No
No
No
No
Yes
Trouble is solved
Yes
Yes
E5 display
Replace the power board,
then check whether the
system can run normally
No
Yes