Daikin RMXS-L Series, Руководство по обслуживанию

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SiUS181305E Troubleshooting for Branch Provider (BP) Unit
Troubleshooting 176
6. Troubleshooting for Branch Provider (BP) Unit
6.1 Electronic Expansion Valve Abnormality
Error Code
A9
Method of Error
Detection
Detection by checking continuity and lack of connector
Error Decision
Conditions
No voltage applied when turning the power supply on
Supposed
Causes

Broken harness of electronic expansion valve coil

Incorrect connection of connectors for electronic expansion valve coil
Troubleshooting
Keep using as it is.
(Could be other
causes than
malfunction.)
Replace the electronic
expansion valve coil.
Replace the BP unit
PCB.
NO
NO
YES
YES
(R19091)
Is the
resistance of
the electronic
expansion valve coil
normal? (46 ± 4
Ω
/
20˚C (68˚F))
Is malfunction
regenerated?
Correct the
connection.
NO
YES
Is the
electronic
expansion valve coil
connected
properly?
Turn the power supply off
once and then back on.
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.