Midea DLCMB - Page 69

High temperature protecon of
condenser
Yes
.
Is the condenser
temperature sensor
resistance normal?
Refer to Appendix 1.
Replace the temperature sensor
No
No
No
Stop the unit Yes
Check if the outdoor unit
venlaon is good
Yes
Ensure the outdoor unit ventilation
is good
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 low; add more.
No
Check if the outdoor fan runs
p
ro
p
er
ly
Check if the outdoor fan runs
properly
.
.
Refer to the Fan Speed is Out of Control
malfuncon soluon.
Determine the cause and resolve.
No
Yes
No
Correct the conneconNo
Yes
Check
t
he
co
nn
ec

o
n
between tem
p
erature
se
n
so
r
a
n
d
PCB
.
Check the connecon
between temperature
sensor and PCB.
Yes
Is the condenser temperature
higher than 149
° F (65 ° C)?
Is the outdoor ambient
temperature higher
than 122
° F (50 ° C)?
DLCM(R/H)B: Service Manual