3
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Troubleshooting
Service manual
43
RXJ20~50A + FTXJ-A(W)(S)(B)
Split Emura 3 R32
ESIE22-04 – 2022.04
3.6.5 Abnormal high pressure
In cooling mode
Check item
Detail
Does the outdoor unit fan run
normally?
Visual inspection
Is the outdoor unit heat exchanger
clogged?
Visual inspection
Is there clogging before or after the
expansion valve (capillary)?
▪
Check if there is a temperature
difference before and after expansion
valve (capillary).
▪
Check if the main valve unit of
expansion valve operates (by noise,
vibration).
Is the High Pressure Switch normal?
Check continuity by using a tester.
Is the outdoor unit installed under such
conditions that short circuit easily
occurs?
Visual inspection
Is the piping length ≤5 m?
Visual inspection
Does air enter the refrigerant system?
Conduct refrigerant collection and
vacuum drying, and then add proper
amount refrigerant.
Is the refrigerant overcharged?
Conduct refrigerant collection and
vacuum drying, and then add proper
amount refrigerant.
In heating mode
Check item
Detail
Does the indoor unit fan run normally?
Visual inspection
Is the indoor unit heat exchanger
clogged?
Visual inspection
Is the indoor unit installed under such
conditions that short circuit easily
occurs?
Visual inspection
Is there clogging before or after the
expansion valve (capillary)?
▪
Check if there is a temperature
difference before and after expansion
valve (capillary).
▪
Check if the main valve unit of
expansion valve operates (by noise,
vibration).
Is the High Presure Switch normal?
Check continuity by using a tester.
Is the minimum piping length
respected?
Visual inspection
Does air enter the refrigerant system?
Conduct refrigerant collection and
vacuum drying, and then add proper
amount refrigerant.
draft – 22/04/2022 08:50
Содержание Emura 3 Series
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