Haier AD96NAHAEA - Diagnostic Information (Trouble Shooting)

Commercial Air Conditioner Model: AU96NATAEA
AD96NAHAEA, AP96NACAEA
67
start
display E6
check if the wires of
pressure switch is
proper,and firm
analyse the reason
of high pressure
and solve it
fix the wires of
pressure switch
again
no
yes
9) E8 – communication failure between operation panel and indoor unit
start
if the wired controller
and indoor PCB are
compatible
if terminals A,B,C,D on
wired controller are
corresponding with
terminals of indoor PCB
if terminals A,B,C,D of
wired controller are in
open circuit or
connected well
if term inals A,B(or
C,D)of wired controller
are short circuit
change wired
controller
wire correctly
wire correctly
wire correctly
yes
yes
yes
yes
no
no
no
10) E9 – communication failure between indoor and outdoor