Trouble shooting 23
OUTDOOR UNIT Error Method:
Detective Actuators:
Detective details:
Forecast of Cause :
Check Point 2 : Check voltage of Main PCB (DC5.0V)
PRESSURE SWITCH
RED
RED
CN37
1
2
Check Point 1 : Reset Power Supply and operate
Check Point 3 : Check Pressure Switch
High Pressure Switch Error
Outdoor Unit Main PCB Circuit
Pressure Switch
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.
>> If no abnormal connection is found,
replace Pressure Switch.
After replacing Pressure Switch, check operating
condition and pressure in operation.
OK
PRESSURE SWITCH (CN37)
Pressure switch
608.7 14.5 PSI
Characteristics of pressure switch
Contact : Open Short
Contact : Short Open
463.8 21.7 PSI
Check if connector is loose or cable is open.
When pressure switch open is detected in 10 seconds
after the power is turned on.
NO
YES
RED
Indicate or Display:
Outdoor Unit : LED 1 : 9 time Flash
Indoor Unit : Operation lamp: 8 time Flash, Timer lamp: 6 time Flash
Economy lamp: Continuous flash.
ERROR CODE : [E : 86]
02-28
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