Daikin LX10F10A User Manual

2-23
002 F109 ・ E107 ・ E109
Alarm
Logic
F109 LPT remains at -72kPa or lower within 2 seconds after compressor startup.
E109 LPT remains at -70kPa or lower for 2 seconds during operation.
E107 DCHS1or DCHS2 becomes 130℃ or more for 10 minutes or 145℃ or more.
Possible
Causes
1. Refrigerant shortage
2. Liquid line----LSV failure, clogging of filter, strainer or drier.
3. EEV failure (Coil failure, valve not opening, valve clogging)
Trouble
Shooting
1. Check for refrigerant shortage
Charge refrigerant R134a 0.5kg additionally two times.
Then, check if the low pressure changes (increases)
during operation.
1. It is refrigerant shortage if
there is change of low pressure
increasing. Stop refrigerant
additional charging and recover
refrigerant in system. Check
refrigerant leakages and then
charge specified amount of
refrigerant.
2-1. LSV check
1) Check the LSV coil resistance
2) Energise LSV coil and listen the sliding sound
("CLICK") of valve body refering to LSV ON/OFF
check （Refer Manual check in paragraph 4.1）
1) Coil resistance within 15.2±1.5Ω
2) If there is no sliding sound
("CLICK") of valve body, it is faulty
valve body. (Valve body is not
moving.)
2-2. Liquid line checki
Check if there is a clogging in filter (in front of LSV),
drier, strainer (in front of EEV).
If there is a clogging, the leaving side temperature of
drier, filter or strainer is low.
2-2. If there is a clogging, replace
that parts.
Then, charge specified amount of
refrigerant.
3. EEV check
3.1 Disconnect the connector X9A (CPU board), then
check the resistance of EEV coil.
3.2 Touch for the EEV coil vibration corresponding to
opening change (pls) in initial opening operation
of EEV.(Refer to paragraph 1.4.6 for initial opening
operation.)
3.3 Fully open the valve body using emergency magnet.
(Refer to paragraph 4.9.2.)
Then operate the unit without mounting coil.
3.1 Resistance between each coil:
46±3Ω
3.2 In case that the coil does not
vibrate corresponding to opening
change, check the coil or the
controller.
3.3 If the alarm is still detected, the
valve body is not working. It is
valve body malfunction.
Controller
Action
F109 Unit stop
E109 Restart after 3 minutes standby×9 times retry
Retry after 4 hours standby

Daikin LX10F10A Specifications

General

Brand	Daikin
Model	LX10F10A
Category	Refrigerator
Language	English