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

Troubleshooting (Heat Reclaim Ventilation)
6A
7.4 " " Damper System Error (Alarm)
Remote Error Code
Controller LCD
Display
Applicable Heat reclaim ventilation
Models
Method of Measurement of damper motor limit switch ON/OFF time and temperatures detected by outdoor
and indoor air thermistor.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Troubleshooting
337
6A
Inspection Blinking Unit No. Blinking
When damper system error (alarm) and indoor (or outdoor) thermistor error are generated at
the same time.
When damper system error (alarm) occurs and values of indoor and outdoor air thermistor
meet frost conditions.
Faulty damper motor or limit switch
Faulty indoor air thermistor
Faulty outdoor air thermistor
Frosting
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.
Check error record on
malfunction history display in
service mode.
6A 64
Are " " and " " or
65
" " recorded?
YES
64 65
Are " " and " "
recorded?
YES
64
Is " " recorded?
YES
NO
NO
NO
SiBE31-801_C
Take corrective measures
specified for damper system
error (alarm).
(Remove the cause of problem,
and reset display.)
Take corrective measures
specified for damper system
error (alarm) and indoor and
outdoor air thermistor errors.
Take corrective measures
specified for damper system
error (alarm) and outdoor air
thermistor error.
Take corrective measures
specified for damper system
error (alarm) and indoor and
outdoor air thermistor error.
Troubleshooting