Ca" Indoor Unit: Leaving Water Thermistor Error (R5T) - Daikin ERSQ 011AAV1 Service Manual

Troubleshooting by Indication on the Remote Controller
"CA " Indoor Unit: Leaving Water Thermistor Error (R5T)
3.9
CA
Remote Control
Display
Subcode 0
Applicable
AII indoor unit models
Models
Method of Malfunction detection is carried out by temperature detected by leaving water temperature
Malfunction thermistor.
Detection
Malfunction
When the leaving water temperature thermistor becomes disconnected or shorted while the unit
Decision is running.
Conditions
Supposed
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P229.
140
Defect of indoor unit thermistor for leaving water (R5T)
Defect of indoor unit PC board (A1P)
Be sure to turn off power switch before connecting or disconnecting connector,
otherwise parts may be damaged.
Caution
Connector
NO
(X17A) is connected to
the indoor unit PC
board.
YES
Resistance
is normal when
measured after
NO
disconnecting the thermistor
(X17A) from the indoor unit
PC board.
(7.2k ~112k )
YES
Bad wire connection
value < -43.6 C
Faulty thermistor
value > 95 C
Connect the thermistor and turn
on again.
Replace the thermistor (R5T).
Replace the indoor unit PC board (A1P).
(V2786)
Troubleshooting
ESIE09-08