Troubleshooting by Remote Controller Si20-701_B
149
Troubleshooting
Note:
∗1. HPS activating value is approximately 3.0 MPa.
Is protection
HPS connected to
outdoor unit
PCB?
NO
YES
Correct the
connection.
Is there
continuity in
protection HPS?
NO
YES
Replace the
open-circuit HPS.
Is high
pressure
abnormally high during
operation? (∗1)
YES
Defective
refrigerant
system.
Turn OFF the power.
Wait 2 to 3 minutes after
compressor stops
operating, then check the
following.
NO
Replace the
outdoor unit
PCB.
Caution
Be sure to turn off the power switch before
connecting or disconnecting connectors, or parts
may be damaged.
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