Indoor PCB OK
●
Yes
No
Yes
Yes
No
No
Is the Indoor PCB LED
Does the voltage
between L and C at
Is the voltage from
L to C at indoor unit
between 0~80VAC
Is the Indoor PCB LED
pattern repeatedly
Fault is with
outdoor PCB
motor
●
There is 230 VAC
AC-L OUT & AC-N
OUT (CN9 & CN8)
There is less than 5 VDC at
CN22 (module power) and
The voltage between
Go to outdoor PCB
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
No
No
No
LED2 (upper left) is lighted
fan motor at CN21. LED1
The display is
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:
AW09EH2VHD
AW12EH2VHD
AW18EH2VHD
1U09EH2VHD
1U12EH2VHD
1U18EH2VHD
PAGE 49
ERROR CODES and Troubleshooting
Summary of Contents for AW09EH2VHD
Page 2: ... This page intentionally left blank ...
Page 4: ...Failure to follow any CAUTION may in some cases result in grave consequences ...
Page 6: ...PAGE 6 ...
Page 9: ...5VDC and 15VDC pulsing communication connection between the PCB and the IPM ...
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Page 15: ...Connector for coil temperature sensor and room temperature sensor ...
Page 17: ......
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Page 22: ......
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Page 26: ...PAGE 32 ...
Page 50: ...Error Code E7 LED1 15 Flash Wiring Diagram Reference PAGE 50 ERROR CODES and Troubleshooting ...
Page 57: ...PAGE 57 Ambient Defrost and Pipe Sensor Tables Discharge Sensor Tables ...
