TCL U-MATCH-R32 Series User Manual

TCL U-MATCH-R32 SERIES DC INVERTER AIR CONDITIONERS SERVICE MANUAL
91
3.3.7 J8,J9--- Over / under voltage protection
• Test voltage between L &N, When the power supply V＞AC260V or V＜AC150V, AC
will display J8 or J9 protection, unit will recover back to previous status while V＞AC155V.
• Test voltage on the big size electrolytic capacitor of ODU PCB, When DC busbar
voltage V＞ DC420V or V＜DC150V, unit will recover back to previous status while
DC190V＜V＜DC410V
Display J8 or J9
Is the power supply
voltage btw145-260V?
No
Wait until the AC
voltage recovery
Yes
Is the power supply
voltage btw145-260V?
Yes
No
Is the busbar voltage
btw150-420V(Single-
phase)、260-720V(Three-
phase)?
No
Wait until the busbar
voltage recovery
Yes
Unit works
normal?
Yes
No
Replace ODU PCB
End

TCL U-MATCH-R32 Series Specifications

General

Brand	TCL
Model	U-MATCH-R32 Series
Category	Air Conditioner
Language	English