DM16-01.01.11-01en
Service
manual
Multi DC inverter R410A. Outdoor unit
51
11.3.2.9
High temperature protection of condenser (ODU P5)
When outdoor pipe temperature is more than 65°C, the unit will stop, and unit runs again when outdoor pipe
temperature less than 52°C.
High
temperature
protection
of
condenser
Check whether the
condenser temperature is
Higher than 65°C
Yes
Check whether the
resistance of condenser
temp. sensor is normal
refer
to
the
Appendix
1
Replace
the
temperature
sensor
No
No
Check whether the outdoor
ambient temperature is
higher than 50
℃
No
Stop
the
unit
Yes
Check
if
the
outdoor
unit
ventilation
is
good
Yes
Make the outdoor unit ventilate well
Check whether the heat
exchanger is dirty
No
Clean the heat exchanger
Yes
Check whether the refrigerant
system is ok
Replace outdoor main
board
No
Refrigerant
is
not
enough
add
the
refrigerant
No
Check
if
the
outdoor
fan
runs
properly
please
refer
to
the
solution
of
fan
speed
has
been
out
of
control
malfunction
.
Find
out
the
cause
and
have
it
solved.
No
Yes
No
Correct
the
connection
No
Yes
Check
the
connection
between
temperature
sensor
and
PCB.
Yes
