Tosot TUHD18ND3F1O - Page 88

TOSOT DC INVERTER U-MATCH AIR CONDITIONERS
85
P8 is displayed on
the wired controller
P8 is displayed in the
mainboard 88
Indicating lamp
Is the
IPM or PFC module
of mainboard
tightened？
No
Work normally
Replace the
mainboard
Yes
Tighten the IPM
or PFC module
 PH DC busbar over-voltage protection
 PL DC busbar under-voltage protection
PH or PL is displayed on
the wired controller
PH or PL is displayed in
the mainboard 88
indicating lamp
Is input voltage
ranged from 185VAC
to 264VAC?
Yes
Replace the
mainboard.Does
it work normally?
No
Replace the
compressor
Work
normally
Yes
Please cut off the
power and notify the
power company.
No