Troubleshooting
4-78
Samsung Electronics
4-3-40
: Comp. Down due to a Protective Control of Low Pressure
Indoor unit display
Cause of problem
×
(Operation)
◑
(Timer)
◑
(Fan)
◑
(Filter)
×
(Defrost)
• Insufficient refrigerant
• Clogged electronically operated valve
• Clogged service valve
• Compressor unloading defect
• Defective low pressure sensor
• Leakage in discharge check valve of the compressor in the stop-side outdoor unit
• When used in a temperature condition that does not fall within the usage condition
(outdoor air temperature during heating operation –below 68˚F/20˚C, outdoor air temperature during
cooling operation – below 23˚F/-5˚C), this error may occur
Criteria
• Detect when the value of low pressure sensor is below 0.25MPa during cooling operation, 0.14MPa during
heating operation
Outdoor unit display
Do the values of S-net and
Manifold gauge correspond?
Does indoor/outdoor EEV oper-
ate well?
Is there any clogged place in
the piping (ex. filter)?
Check the amount of refrigerant
Is there any leakage in
liquid pipe valve or discharge check
valve of the stop-side outdoor unit
when several outdoor units are in
operation?
Test operation
Open the service valve
Replace a low pressure sensor
Check the relevant EEV
Check the piping
Replace the relevant components
Yes
Yes
Yes
No
Are service valves open?
Connect S-net and Manifold gauge
(imperative)
No
No
No
Yes
Yes
1. How to check
No
Содержание AVXCSH023/032/040CE
Страница 114: ...0 02 Samsung Electronics 4 30...
Страница 213: ...5 1 Samsung Electronics 5 Exploded Views and Parts List 5 1 Indoor Unit 5 1 1 Slim1 way cassette type Body...
Страница 215: ...Exploded Views and Parts List 5 3 Samsung Electronics Slim 1 way cassette type cont Panel A type...
Страница 217: ...Exploded Views and Parts List 5 5 Samsung Electronics Slim 1 way cassette type cont Panel B type...
Страница 223: ...Exploded Views and Parts List 5 11 Samsung Electronics 5 1 3 4 way cassette type Body AVXC4H052 072C ND052 0724H...
Страница 225: ...Exploded Views and Parts List 5 13 Samsung Electronics 4 way cassette type cont Body AVXC4H100 110 145C ND100 110 145H...
Страница 232: ...0 02 Samsung Electronics 5 20...
Страница 250: ...0 02 Samsung Electronics 5 38...
Страница 255: ...Exploded Views and Parts List 5 43 Samsung Electronics 5 1 12 Wall mounted type Neo Forte with EEV ND020 032 040QHXC...
Страница 257: ...Exploded Views and Parts List 5 45 Samsung Electronics Wall mounted type Neo Forte with EEV cont ND052 060QHXC...
Страница 262: ...0 02 Samsung Electronics 5 50...
Страница 263: ...5 51 Samsung Electronics 5 2 Outdoor Unit 5 2 1 RVXVHT075 100FE RD075 100VHXFA...
Страница 264: ...Exploded Views and Parts List Samsung Electronics 5 52 RVXVHT075 100FE RD075 100VHXFA cont...
Страница 267: ...Exploded Views and Parts List 5 55 Samsung Electronics 5 2 2 RVXVHT125FE RD125VHXFA...
Страница 268: ...Exploded Views and Parts List Samsung Electronics 5 56 RVXVHT125FE RD125VHXFA cont...
Страница 279: ...Exploded Views and Parts List 5 67 Samsung Electronics 5 2 5 RD040 050MHXCA...
Страница 285: ...PCB Diagram 6 5 Samsung Electronics 6 1 4 Duct type Slim MAIN PCB...
Страница 288: ...0 02 Samsung Electronics 6 8...
Страница 289: ...PCB Diagram 6 9 Samsung Electronics 6 1 5 Duct type MSP MAIN PCB...
Страница 291: ...PCB Diagram 6 11 Samsung Electronics 6 1 6 Duct type BIG MAIN PCB...
Страница 295: ...PCB Diagram 6 15 Samsung Electronics 6 1 7 Wall mounted type Neo Forte without EEV MAIN PCB...
Страница 298: ...0 02 Samsung Electronics 6 18...
Страница 299: ...PCB Diagram 6 19 Samsung Electronics 6 1 8 Wall mounted type Neo Forte with EEV MAIN...
Страница 302: ...0 02 Samsung Electronics 6 22...
Страница 303: ...PCB Diagram 6 23 Samsung Electronics 6 1 9 Wall mounted type Vivace MAIN PCB...
Страница 332: ...0 02 Samsung Electronics 7 16...
Страница 345: ...Schematic Diagram 8 13 Samsung Electronics Filter PCB This Document can not be used without Samsung s authorization...
Страница 346: ...Schematic Diagram Samsung Electronics 8 14 CT PCB This Document can not be used without Samsung s authorization...