Hitachi YUTAMPO Series Service Manual page 87

6 Troubleshooting
Troubleshooting by protection code (Outdoor unit)
P116
Protection
code
• Outdoor unit LED301 blinks 16 times.
• This protection code is displayed continuously until the abnormal situation ends, without leading to an alarm.
LD301 blinks 16 times.
High load stop
79 SMGB0135 rev.0 - 06/2020
* This is not a failure in case that
operation continues after restarting.
Compressor stopped since current exceeded
the threshold value due to high load. It
restarts after a fixed time (3 minutes).*
Is the heat exchanger of the outdoor unit clogged
or are its surroundings blocked by something?
Is there any abnormality in the refrigerating cycle?
Software Ip cut stop
Yes
Remove the cause of the
problem.
No
Yes
Fix the point of abnormality.
No
No
Is the service valve open?
Yes
Abnormal
Check the compressor
for loose connectors and
continuity of the cord.
Normal
Is a leakage breaker
installed?
No
Abnormal
Is the insulation of the compressor
normal? Check it with a megger.
Normal
Conduct a "self-check".
Open the service valve.
Fix the point of
abnormality.
Replace the compressor and
inspect the outdoor electrical
parts.
Replace the parts found to be
defective based on the results of
the "self-check" evaluation.
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