Daikin FTKS50BVMB, Service Manual

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SiEN18-622 Troubleshooting for Outdoor Unit
Troubleshooting 371
7.10 Malfunction of Discharge Pipe Thermistor (R2T)
Remote Control
Display
J3
Applicable
Models
AII outdoor unit models
Method of
Malfunction
Detection Malfunction is detected from the temperature detected by discharge pipe temperature
thermistor.
Malfunction
Decision
Conditions When a short circuit or an open circuit in the discharge pipe temperature thermistor is detected.
Supposed
Causes „ Defect of thermistor (R2T) for outdoor unit discharge pipe
„ Defect of outdoor unit PCB (A1P)
Troubleshooting
∗
Refer to thermistor resistance / temperature characteristics table on P407.
(V 3 072)
Caution
NO
NO
YE S
YE S
Be su re to t u rn off power s witch b efore connect or di s connect connector,
or p a rt s d a m a ge m a y b e occ u rred.
Connector i s
connected to
o u tdoor u nit PC
b o a rd (A1P).
Connect the thermi s tor a nd t u rn
on a g a in.
Repl a ce the thermi s tor (R2T).
Repl a ce o u tdoor u nit PC b o a rd
(A1P).
Re s i s t a nce
i s norm a l when
me asu red a fter
di s connecting the
thermi s tor R2T from the
o u tdoor u nit PC
b o a rd. (5.0k
Ω
~
640K
Ω
)