F3" Indoor Unit: Abnormal Discharge Pipe Temperature - Daikin ERSQ 011AAV1 Service Manual

Troubleshooting by Indication on the Remote Controller
3.23 "F3 " Indoor Unit: Abnormal Discharge Pipe Temperature
F3
Remote Control
Display
Subcode 19
Applicable
All indoor units
Models
Method of Abnormality is detected according to the temperature detected by the discharge pipe
Malfunction temperature sensor.
Detection
Malfunction
When the discharge pipe temperature rises to an abnormally high level
Decision When the discharge pipe temperature rises suddenly
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to "Thermistor Resistance / Temperature Characteristics" table on page 229.
162
Faulty discharge pipe temperature sensor (R6T)
Faulty connection of discharge pipe temperature sensor
Faulty indoor unit PC board
Be sure to turn off power switch before connect or disconnect connector,
Caution or parts may be damaged.
Discharge
pipe temperature is
120 C or higher when the
unit stop by
malfunction
.
NO
Pull out the discharge pipe
thermistor (X12A [1,2] on A4P)
from the indoor PC board, and
then make measurement of
resistance using a multiple meter.
YES
YES
NO
ESIE09-08
Refrigerant shortage, compression
defect, etc. Defect of the
refrigerant system.
Replace the discharge pipe
thermistor (R6T).
Replace indoor unit PC board
(A4P).
Troubleshooting