Malfunction Of Discharge Pipe Thermistor (R2T) - Daikin E-Series Service Manual

SiENBE18-621

7.10 Malfunction of Discharge Pipe Thermistor (R2T)

J3
Remote Control
Display
Applicable
AII outdoor unit models
Models
Method of Malfunction is detected from the temperature detected by discharge pipe temperature
Malfunction thermistor.
Detection
Malfunction
When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Decision
Conditions
" Defect of thermistor (R2T) for outdoor unit discharge pipe
Supposed
" Defect of outdoor unit PCB (A1P)
Causes
Troubleshooting
∗ Refer to thermistor resistance / temperature characteristics table on P355.
Troubleshooting
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Connector
is connected to
outdoor unit
PC board
(A1P).
YES
Resistance
is normal when
measured after
disconnecting the thermistor
R2T from the outdoor
unit PC board.
(5.0kW~
640kW)
YES
NO
NO
Troubleshooting for Outdoor Unit
Connect the thermistor and turn
on again.
Replace the thermistor (R2T).
Replace outdoor unit PC board
(A1P).
(V3072)
319