Midea EL-KF20GW/N2Y-A(B) Service Manual page 23

GD Midea Refrigerant Equipment Co. Ltd
Does ind oor heat -
Check sp eed Yes
ex chan g er frosted?
of in door
motor.
Che ck s peed
of o utdoo r
mo tor.
Check t he over-
curre n t prot ect or of
comp ressor.
Recycle the
refrigerant
and recharge .
Yes
Per f orm
the related
inst ruct io ns.
Is th ere beep from
the unit when using
remoter?
Yes
Replace the
Does the unit run in
disp lay boa rd .
Forced Co ol m ode?
Yes
No
Doe s the outdoo r Yes
o
temp over 48 C?
No
C heck the soft
s t arter mou ld.
Re place the
ma in PCB board .
Re place the
co mpressor.
Ye s
Do th e LED lamps
indicat es ERR?
No
N o
Yes
No
Ch eck t he soft
sta rter
Cur r ent protectio n
(LED indi cates)
Check t he indoor
air filt er.
Check the out door
condenser.
Che ck t he positio n
and wiring of tem p
sen sor (all of the m).
D oes it occur in No
C ool mode?
It is n orma l under Yes
tha t ambient temp .
R eplace the re verse
v alve.
T he unit does not
o per ate
No
Does the power LED
light af ter turning
the switch on?
Ch eck t he bat ter y
of the remot er.
Check t he displa y
board .
No
Rep lace the ma in
PCB b oard.
No
22
Service manual for Electrolux split Series
If wro ng, t he unit w ill
result in current
prote ction, not tem p.
Does outdo o r heat - Yes
exchanger fr os ted?
No
Doe s the ind oor
o
temp low than 1 0 C?
No
Check t he solenoid
c oil o f reve rse valve.
Chec k t h e soft
starter m ou ld.
C hec k t he ov e r-
c urre nt prot ect or of
c ompressor.
Replace th e
main PCB board.
Recycle the ref rig e-
rant and rech arge.
C hec k t he elect rical
so urce.
Check the po wer
supplie r.
Check wirin g.
Does the volt ag e
bet wee n inpu t
terminat es o f
trans former i s
c orre ct?
Yes
Does the volt ag e
bet wee n outp ut
No
terminat es o f
trans former i s
c orre ct?
Yes
D oes the power
Yes
tr ansfer to t he
di sp lay boa rd ?
Che ck t he
dra inage
s ys tem of
out door unit.
Replace the
transfo rmer.
Replace the
disp lay boa rd .