Gree GMV-PD100W/NAB-K, Service Manual

Page: 114 / 133

110
DC Inverter Multi
VRF Service Manual
2.13 DC Overvoltage Protection
E5 is displayed on
the wired controller
Monitoring
display Nixie tube of
mainboar d
Yes
Yes
Yes
No
No
No
No
Yes
Is input voltage
within the running range
(185~264VAC)
Overvoltage
protection of DC bus
PH is displayed
It is recorded and
reflected
.
Does it
occur during running of
compressor?
How many
times does it occur
within 1 hour.
It is caused by interference,
Inspect wiring or interference
source . Take some actions
o prevent interference
Replace mainboard
It is caused by slowdown of
the compressor. If it always
happens, inspect the
compressor. The voltage is too high.Please
cut off the power immediately
in case damaging the unit or
causing fire accident.
Does it occur
during frequency drop
of compressor?