ERROR CODES AND TROUBLESHOOTING
PAGE 53
ENGLISH
Error Codes and Troubleshooting
Reposition on correct
terminals, replace wire if
spliced or the incorrect type
Indoor PCB OK
The control wire is 14/4 stranded
copper on the correct terminals, with
no splices or loose connections?
Yes
No
Yes
Yes
No
No
Is the Indoor PCB LED
flashing 3 times per second?
Does the voltage
between L and C at
indoor unit fluctuate
0~140VAC?
Is the voltage from
L to C at indoor unit
between 0~80VAC
(approx..)?
Is the Indoor PCB LED
pattern repeatedly
Flash…Flash…On?
Fault is with
outdoor PCB
Replace fan
motor
Replace INDOOR
PCB
Replace
PCB
Replace
PCB
Replace IPM
The communication
wire is broken
There is 0-80 VAC fluctuating
between 1(N) and 3(C) at ID UNIT?
There is 230 VAC
at the PCB? Across
AC-L OUT & AC-N
OUT (CN9 & CN10)
There is less than 5 VDC at
CN22 (module power) and GND
(pins 1 and 2)?
The voltage between
1(N) and 3(C) is a fixed
value at ID UNIT?
Go to outdoor PCB
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
No
LED1 (center) is off
LED2 (upper left) is lighted
?
With power off, disconnect
fan motor at CN21. LED1
lights with power back on?
The display is
lighted, yet the
LED is off?
Error Code
(Indoor/Outdoor)
E7/LED1: 15 Flash
ID and OD Loss of Communication
Complete the “Check This First” Flow
Chart for both ID and OD units before
continuing.
Models:
AW24TL2HFA
AW30TL2HFA
AW36TL2HFA
ASYW24TRDFA
ASYW30TRDFA
ASYW36TRDFA
1U24TL2HFA
1U3036TL2HFA
ASH124TRDFA
ASH3036TRDFA
Start
See following page
for wiring diagram and
relevant color-coded
test positions.
