Check Point 2 : Check voltage of Main PCB (DC5.0V)
HIGH PRESSURE SW
RED
RED
CN90
2
1
2
1
OK
Check Point 1 : Reset Power Supply and operate
Check Point 3 : Check Pressure Switch
YES
NO
OK
1. Connector connection failure 2. Pressure Switch failure 3. Main PCB failure
Does abnormal LED indication show again?
Make sure circuit diagram of outdoor unit and check terminal
voltage at Pressure Switch. (DC5.0V)
If the voltage does not appear, replace Main PCB.
Check if connector is loose or cable is open.
>> If no abnormal connection is found,
replace Pressure Switch.
After replacing Pressure Switch, check operating
condition and pressure in operation.
Check Point 4 : Check High Pressure Protection on cooling
Check Excessive high pressure protection on cooling.
(Refer to Trouble shooting 21)
02-18
Outdoor Unit Main PCB Circuit
Pressure Switch
When pressure switch open is detected in 10 seconds
after the power is turned on.
Trouble shooting 14
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Pressure Switch Error
DC
Detective Actuators: Detective details:
Forecast of Cause:
To Next Page
Loading...
Need help?
General
