Daikin FTKS50BVMB, Service Manual

Page: 381 / 456

SiEN18-622 Troubleshooting for Outdoor Unit
Troubleshooting 369
7.8 Refrigerant Overcharged
Remote Control
Display
F6
Applicable
Models All outdoor unit models
Method of
Malfunction
Detection Excessive charging of refrigerant is detected by using the heat exchanging deicer temperature
during a check operation.
Malfunction
Decision
Conditions When the amount of refrigerant, which is calculated by using the heat exchanging deicer
temperature during a check run, exceeds the standard.
Supposed
Causes „ Refrigerant overcharge
„
Misalignment of the thermistor for heat exchanger
„ Defect of the thermistor for heat exchanger
Troubleshooting
∗
Refer to “Thermistor Resistance / Temperature Characteristics” table on P407.
(V2797)
Caution
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.
YE S
NO
NO
YE S
Check the mo u nting condition
of the temper a t u re s en s or s
of the he a t exch a nging deicer
thermi s tor in the piping.
Are the ab ove
thermi s tor in s t a lled on
pipe s correctly?
Remove the he a t exch a nging
deicer thermi s tor from the
o u tdoor PCB a nd me asu re
re s i s t a nce with a te s ter.
I s the ch a r a cteri s tic
of the ab ove
thermi s tor norm a l?
In s t a ll thermi s tor correctly.
Repl a ce thermi s tor.
Refriger a nt overch a rged.