Si20-701_B Troubleshooting by Remote Controller
144
Troubleshooting
Note:
∗1. Some models are not equipped with an HPS for
control or safety.
Are
HPS's for
control and safety
connected to the
outdoor unit
PCB? (∗1)
NO
YES
YES
Connect correctly
Do the
HPS's for
control and safety
have continuity?
NO
Replace the HPS
without
continuity.
Turn OFF the power
supply and check the
following after letting the
compressor rest for 2 or 3
minutes.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
Is high
pressure during
operation abnormally
high?
YES
Correct
refrigerant piping
circuit.
NO
Replace the
outdoor unit
PCB.
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