Daikin FTXS30HVJU - High Pressure Control in Cooling

SiUS04-924 Troubleshooting
Service Diagnosis 89
4.15 High Pressure Control in Cooling
Remote
Controller
Display
F6
Method of
Malfunction
Detection
High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the
temperature being sensed by the heat exchanger thermistor exceeds the limit.
Malfunction
Decision
Conditions
 Activated when the temperature being sensed by the heat exchanger thermistor rises above
149°F(65°C).
 The error is cleared when the temperature drops below 122°F(50°C).
Supposed
Causes
 The installation space is not large enough.
 Faulty outdoor unit fan
 Faulty electronic expansion valve
 Faulty defrost thermistor
 Faulty outdoor unit PCB
 Faulty stop valve
 Dirty heat exchanger
 Foreign matter stuck in the outdoor unit fan
Troubleshooting
Check No.04
Refer to P.106
Check No.06
Refer to P.108
Check No.07
Refer to P.109
Check No.09
Refer to P.110
(R7142)
Caution
Be sure to turn off the power switch before connecting or disconnecting
the connector, or parts damage may occur.
Replace the fan motor.
Repair the connector or fan
motor lead wires.
Replace the heat exchanger
thermistor.
Replace PCB.
Replace the electronic
expansion valve or coil.
Replace the PCB.
Change the air outlet grille
position.
Clean the heat exchanger.
Change the installation
location.
Check No. 06
Check the heat exchanger
Check the installation space.
Check No. 04
Check the electronic expansion valve.
Abnormal
Normal
Normal
Normal
Normal
Abnormal
Abnormal
Abnormal
Judgment
Judgment
Check No. 09
Check the outdoor fan.
Check No. 07
Check the installation
condition.