GREE ELECTRIC GUHD12NK3AO Service Manual page 138

DC INVERTER U-MATCH AIR CONDITION
◆
Overheat protection of radiator
Monitoring
display
Overheat
protection of
radiator
E5 is
displayed on
wired
controller
Is radiating of
outdoor unit in good
state?
yes
Is radiating fin dirty
or blocked?
no
Is silica gel at
bottom of IPM
yes
module uneven? Is
there foreign matter
between radiator
and IPM module.
no
Are screws of
radiator tight?
yes
It is recorded.
Dual 8 indicator
of main board
P8
If short circuit happens to
outlet air and return air of
no
the outdoor unit, the
radiating effect will be
bad.
Dirty or blocked
radiating fin will lead to
yes
bad radiating.
The silica gel must be
even? There should be
no foreign matter
between radiator and
IPM module.
no
Please tighten the
screw.
MAINTENANCE
135