- 194 -
Troubleshooting
8
1. Judgment method
Compressor is on in cooling operation & inlet/outlet temperature of stopped indoor unit is
below 0°C for 2.5 minutes.
2. Judgment time
Starts detecting after 5 minutes from completion of the safety start.
3. Control
4. Check method
1) Check whether the electronic expansion valve wire is connected correctly to the indoor unit PCB.
2) Open the electronic expansion valve kit to check whether the electronic expansion valve coil is correctly inserted.
3) Press the reset key (K3) of outdoor unit to check whether the same error appears.
1)
- If it is the close error, operate the related indoor unit.
1)
- If it is open error, put the related power off to check.
4) If there is no trouble for the above check items, replace the electronic expansion valve.
1)
- Since the replacement of electronic expansion valve is the inconvenient work to recover the all refrigerant in the system,
be sure to check the above items before replacing it.
8-2-27. Electronic expansion valve open error
Outdoor unit display
Indoor unit display
Judgment method
Causes
(Open error of xth electronic expansion valve)
(Operation)
(Timer)
(Fan)
(Filter)
(Removing frost)
- Refer to the following judgment method
- Indoor unit electronic expansion valve open error
x
on
off
safety start
0 step
40 sec.
512 close 480 open
90 sec.
3 minutes
capacity control
0 step
Compressor
EEV(Wrong)
EEV(Normal)
Normal control according to the compressor
DB98-17816A(1)_8 3/2/04 9:35 AM Page 194
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