High Pressure Control In Cooling - Daikin Super multi NX E Series Service Manual

Troubleshooting for Outdoor Unit

7.12 High Pressure Control in Cooling

F6
Error Code
Outdoor Unit LED
A
∗ LED5 is equipped only on the 5-room model.
Display
Method of Error
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the
Detection temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Error Decision
Conditions
Supposed
Causes
Troubleshooting
Check No.01
Refer to P.230
Check No.12
Refer to P.234
Check No.17
Refer to P.238
Check No.18
Refer to P.238
Check No.19
Refer to P.239
215
j i h i i
1 2 3 4
The temperature sensed by the outdoor heat exchanger thermistor rises above about
The error is cleared when the temperature drops below about
The installation space is not large enough.
Dirty outdoor heat exchanger
Defective outdoor fan motor
Defective stop valve
Defective outdoor electronic expansion valve or coil
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Check the installation space.
Check No. 17
Check the installation
condition.
OK
Check No. 19
Check the outdoor fan.
OK
Check No. 18
Check the discharge
pressure.
OK
Check No. 12
Check the outdoor electronic
expansion valve
coil.
OK
Check No. 01
Check the outdoor heat
exchanger thermistor.
OK
h
5
NG
NG
NG
NG
NG
SiBE121135_A
65
°C.
50
Change the installation
location or direction.
Clean the outdoor heat
exchanger.
Replace the fan motor.
Reconnect the connector or
fan motor lead wires.
Replace the stop valve.
Replace the outdoor
electronic expansion valve
or the coil.
Replace the outdoor unit
PCB.
Replace the outdoor heat
exchanger thermistor.
Replace the outdoor unit
PCB.
(R14413)
Service Diagnosis
°C.