Daikin FTXM-V Series, Руководство по обслуживанию

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SiUS042113E Troubleshooting
Part 6 Service Diagnosis 115
4.18 Discharge Pipe Temperature Control
Error Code
F3
Method of Error
Detection An error is determined with the temperature detected by the discharge pipe thermistor.
Error Decision
Conditions  If the temperature detected by the discharge pipe thermistor rises above A , the compressor
stops.
 The error is cleared when the discharge pipe temperature has dropped below B .
 If the error repeats, the system is shut down.

Reset condition: Continuous run for about 60 minutes without any other error
09/12 class
18/24 class
Supposed
Causes
 Defective discharge pipe thermistor
(Defective outdoor heat exchanger thermistor or outdoor temperature thermistor)
 Defective electronic expansion valve or coil
 Refrigerant shortage
 Defective four way valve
 Water mixed in refrigerant
 Defective stop valve
 Defective outdoor unit PCB
Troubleshooting
A B
(°C) (°F) (°C) (°F)
(1) above 50 Hz (rising), above 45 Hz (dropping) 118 244 85 185
(2) 21 ~ 50 Hz (rising), 16 ~ 45 Hz (dropping) 106 223 73 163
(3) below 21 Hz (rising), below 16 Hz (dropping) 98 208 65 149
A B
(°C) (°F) (°C) (°F)
118 244 85 185
(R20417)
Caution
NG
OK
OK
OK
NG
NG
∗
Discharge pipe thermistor
∗
O u tdoor heat exchanger thermistor
∗
O u tdoor temperat u re thermistor
∗
Refrigerant shortage
∗
Fo u r way valve
∗
Water mixed
∗
Stop valve
Check No. 12
Check the electronic
expansion valve.
Replace the defective
thermistor(s).
Replace the electronic
expansion valve or the coil.
Refer to the refrigerant line
check proced
u re.
Replace the o u tdoor u nit
PCB (main PCB).
Be s u re to t u rn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check No. 01
Check the thermistors.
Check No. 14
Check the refrigerant line.