Sinclair ASGE-18AI - Page 123

DC INVERTER U-MATCH AIR CONDITION MAINTENANCE
117
◆DC busbar overvoltage protection
E5 displayed
on wired
controller
(overcurrent
protection)
Monitor display
Mainboard indicator
Bright Bright
Bright Bright
Blink Bright
DC busbar
overvoltage
protection
If the input voltage is
within working range
(185
264VAC)?
If the voltage of power grid is
too high, please immediately
cut off the power and never
start the unit. Otherwise, it
might damage the unit or cause
fire!
Does this occur when
the compressor is
running?
Does this occu
r
repeatedly in 1 hour?
Does this occur when
the compresso
r
frequency is
reduced?
PFC board abnormal.
Please check if the
resistor R6, R3 and R9 in
voltage sampling circuit
on PFC board is
abnormal, or replace
PFC board.
Caused by interference.
Please check the cable
routing or determine the
source of interference,
while taking
anti-interference
measures.
Caused when the
compressor is
decelerating. If this
occurs frequently, please
check if the compresso
r
is abnormal.
PFC board abnormal.
Please check if the
resistor R6, R3 and R9 in
voltage sampling circui
t
on PFC board is
abnormal, or replace
PFC board.
Record and feed back
No
Yes
No
No
Yes
Yes
Yes
No