Trouble shooting 37
OUTDOOR UNIT Error Method:
Coil (expansion valve ) Error
Indicate of Display:
02-52
1. EEV coil loose connection 2. EEV wires cut or pinched.
3. Defective EEV coil 4. Main PCB (DC12V) output abnormal
EEV Coil
Main PCB
Coil (Expansion valve) driver circuit open detected.
Detective Actuators:
Detective details:
Forecast of Cause:
OK
NG
OK
OK
NG
Test 1 : Check the connection of EEV connector
Check if the connector is loose connection or not.
Test 2 : Check the EEV wire
Check if the wire of EEV has damage or not.
(Slash, Braking of wire, Pinching, etc.)
Replace EEV Coil
Test 4 : Check the output of EEV on the Main PCB
Check if the DC12V is on between the Pin No.1 of CN111-115 and GND Pin.
(Disconnect the wire of EEV when you check the output of EEV)
Test 5 : Noise, momentary open, voltage drop
Check if temporary voltage drop was not generated.
Check if momentary open was not generated.
Check if ground is connection correctly or there are no related cables near the power line.
OK
NG
Test 3 : Check the EEV Coil
Check if the circuit of EEV coil winding is good or not.
(Refer to the service parts information 3)
Replace EEV Coil
Replace Main PCB
(SERVICE PARTS INFORMATION 10)
Indoor Unit
Outdoor Unit
Operation lamp : 9 time Flash
ERROR CODE : [E : 9A]
Timer lamp
: 10 time Flash
Monitor
A
B
C
D
E
F
9
: Light ON
: Light OFF
n : n time blinking
10
