Troubleshooting For Branch Provider (Bp) Unit; Electronic Expansion Valve Abnormality - Daikin RMXS-L Series Service Manual

SiUS181631EA

6. Troubleshooting for Branch Provider (BP) Unit

6.1

Electronic Expansion Valve Abnormality

A9
Error Code
Method of Error Detection by checking continuity and lack of connector
Detection
Error Decision No voltage applied when turning the power supply on
Conditions
Supposed
Causes
Troubleshooting
Turn the power supply off
once and then back on.
Troubleshooting
Broken harness of electronic expansion valve coil
Incorrect connection of connectors for electronic expansion valve coil
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
NO
Is malfunction
regenerated?
YES
Is the
electronic
NO
expansion valve coil
connected
properly?
YES
Is the
resistance of
the electronic
NO
expansion valve coil
normal? (46 ± 4 Ω /
20˚C (68˚F))
YES
Troubleshooting for Branch Provider (BP) Unit
Keep using.
(Could be other
causes than
malfunction.)
Correct the
connection.
Replace the electronic
expansion valve coil.
Replace the BP unit
PCB.
(R22091)
219