6A" Damper System Error (Alarm) - Daikin RTSQ20PY1 Service Manual

SiBE31-801_C
6A
7.3 " " Damper System Error (Alarm)
Remote Error Code
Controller LCD
Display
Applicable Heat reclaim ventilation
Models
Method of Measurement of damper motor limit ON/OFF time.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
Note:
*1:
Troubleshooting
6A
Inspection OFF Unit No. Blinking
When damper motor limit switch 1 (or 2) remains ON (or OFF) for more than a certain time
duration after ventilation mode is changed.
When damper motor limit switch 1 (or 2) repeats ON/OFF operations after damper motor 1
(or 2) stops.
Faulty damper motor or limit switch
Broken wire in cable
Faulty contact in connector (including relay connector)
Faulty control PCB assembly
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
NO
Is relay connector of
damper motor unit
connected?
YES
Check connectors (X3A or
X4A) (X5A or X6A) on
PCB assembly of damper
motor unit.
NO
Are connectors
connected?
YES
Is damper motor NO
unit operating
normally? (*1)
YES
Place tester probes on connectors of limit switch. Move switch by hand and check continuity. If tester
Ω
indicates 0 when limit switch turns on, and infinity when it turns off, limit switch is normal.
Place tester probes on connectors of damper motor and check resistance. If tester indicates approx.
Ω
17 k in 200-V model, damper motor is normal.
Check resistance and voltage
Troubleshooting (Heat Reclaim Ventilation)
Connect relay connector.
Connect connectors.
Replace the damper motor unit.
Replace the control PCB assy.
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