Hitachi RAC-14EH1 - Page 81

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Communication error.
LD301 blinks 9 times.
Is the connecting cable
connected properly?
(Is 35V being output on the
indoor unit side?)
Are CN3 and CN4
connected?
Is DC35V being output
between terminals C and D?
Normal: DC32V – 39V
Standby: DC18V – 23V
Is DC35V being output at
both ends of R35?
Connect CN 3 and CN4.
Connect properly.
Replace the power P.W.B.
• Defective SW power supply
Replace the power P.W.B.
• NF coils, IF coils, etc.
may be broken.
Check the interface circuit
and replace the main
P.W.B. if needed.
Yes
Yes
Yes
Yes Yes
No
No
No
No
No
07B065_RAS-14EH1_061-082_E 2007.2.6, 9:29 AM79