Discharge Pipe Temperature Control - Daikin 2MXS40H2V1B Service Manual

Troubleshooting for Outdoor Unit

7.10 Discharge Pipe Temperature Control

F3
Error Code
Method of Error Detected by the discharge pipe thermistor
Detection
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.01
Refer to P.206
Check No.12
Refer to P.210
Check No.14
Refer to P.211
193
If the temperature detected by the discharge pipe thermistor rises above A °C, the
compressor stops.
The error is cleared when the discharge pipe temperature is dropped below B °C.
A B
(°C)
40 class 110
50 class 110
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Defective discharge pipe thermistor
(Defective outdoor heat exchanger thermistor or outdoor temperature thermistor)
Defective outdoor electronic expansion valve
Refrigerant shortage
Defective four way valve
Water mixed in refrigerant
Defective stop valve
Defective outdoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check No. 01
Check the thermistors.
OK
Check No. 12
Check the outdoor electronic
expansion valve.
OK
Check No. 14
Check the refrigerant
line.
OK
(°C)
97
95
NG
∗
Discharge pipe thermistor
∗
Outdoor heat exchanger thermistor
∗
Outdoor temperature thermistor
NG
NG
∗
Refrigerant shortage
∗
Four way valve
∗
Water mixed
∗
Stop valve
SiBE121123_A
Replace the defective
thermistor.
Replace the outdoor
electronic expansion valve
or the coil.
Refer to the refrigerant line
check procedure.
Replace the outdoor unit
PCB.
(R15286)
Service Diagnosis