Service manual

ESIE03–01 Error Codes: Outdoor Units
Part 3 – Troubleshooting 3–53
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3
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Troubleshooting To troubleshoot, proceed as follows:
Thermistor curve See page 3–80.
Caution Be sure to turn off power switch before connecting or disconnecting the connector, or parts damage
may occur.
Check the amount of
refrigerant.
NoIs it correct?
Fill with the proper amount
of refrigerant.
y Check if the operating conditions of
the in- and outdoor unit are within the
range
y check the refrigerant piping circuit for
clogging
y check the accuracy of the discharge
thermistor, refer to the
thermistor
curve
y check correct operation of the
expansion valve and the flow through
non-return valves (RYP71-125B7).
Yes
No
Place the sensor correctly in
the discharge pipe port.
Yes
Check the
discharge pipe
sensor.
Has
the sensor come off
the discharge pipe
port?