38
Phenomena
Factor
Countermeasure
7. Remote controller display works
normally and the unit performs
heating operation, however, the
capacity cannot be fully obtained.
1
Linear expansion valve fault
Opening cannot be adjusted well due to linear expan-
sion valve fault.
2
Refrigerant shortage
3
Lack of insulation for refrigerant piping
4
Filter clogging
5
Heat exchanger clogging
6
Air duct short cycle
7
Bypass circuit of outdoor unit fault
1
• Discharging temperature and indoor
heat exchanger temperature does not
rise.
Inspect the failure by checking discharg-
ing pressure.
• Replace linear expansion valve.
2
• If refrigerant leaks, discharging tempera
ture rises and LEV opening increases.
Inspect leakage by checking the tem-
perature and opening.
• Check pipe connections for gas leakage.
3
Check the insulation.
4
Open suction grill and check the filter.
Clean the filter by removing dirt or dust on
it.
5
• If the filter is clogged, indoor pipe tem-
perature rises and discharging pressure
increases. Check if heat exchanger is
clogged by inspecting discharging pres-
sure.
• Clean the heat exchanger.
6
Remove the shield.
7
Check refrigerant system during opera-
tion.
8.
1
For 3 minutes after temperature
adjuster turns off, the compressor
will not start operating even if
temperature adjuster is turned on.
2
For 3 minutes after temperature
adjuster turns on, the compressor
will not stop operating even if
temperature adjuster is turned off.
(Compressor stops operating
immediately when turning off by
the remote controller.)
12
Normal operation
(For protection of compressor)
12
Normal operation
OC294--2.qxp 03.6.9 7:37 PM Page 38
Summary of Contents for Mr.SLIM PUHZ-RP6VHA
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