Daikin D-Series User Manual (English)

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Troubleshooting for RA Indoor Unit Si18-525B

336 Troubleshooting

4.5 Shutter Drive Motor / Shutter Limit Switch Abnormality

Remote

Controller

Display

Method of

Malfunction

Detection

The shutter open / close performance is detected by the limit switch attached on its structure. In

this way, the shutter drive motor and the shutter limit switch are checked for failure.

Malfunction

Decision

Conditions

When the shutter is open, the limit switch is closed.

Supposed

Causes



Shutter drive motor defective



Shutter limit switch defective



Shutter itself deformed (warped)



Shutter's sealing material too thick



Detection error by broken relay harness or disconnected connector



Detection error due to defective PCB (2)



Foreign substance in blow port

Troubleshooting

Check No.03

Refer to P.337

Turn off the power.

Check No. 03

Check the limit switch continuity.

Remove such substance.

Replace the limit switch.

Reconnect the connector or

replace the relay harness.

Replace the shutter drive

motor or the PCB (2).

Check the shutter's sealing

material.

Check the shutter for

deformation or its sealing

material.

(Q0410)

Caution

Be sure to turn off power switch before connect or disconnect connector,

or parts damage may be occurred.

Foreign substance in

the shutter structure?

YES

Shutter closed?

Shutter opening itself?

YES

Relay harness

broken or connector

disconnected?

Limit switch on power?

Open the shutter and turn on the

power.

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Daikin D-Series Specifications

General

HSPF Rating	Up to 10.0
Cooling Capacity	9, 000 - 36, 000 BTU/h
Heating Capacity	9, 000 - 36, 000 BTU/h
Energy Efficiency Ratio (EER)	Up to 12.5
Sound Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Noise Level	19 - 50 dB (Indoor), 49 - 60 dB (Outdoor)
Power Supply	208/230V, 1-phase, 60Hz