- 174 -
Troubleshooting
8
Error reset (KEY 3)
Test operation (KEY4)
Is both service valves open?
Since the service valve is clogged, open
the service valve.
Since it is the electronic expansion valve
close error, check the electronic expansion
valve and PCB related.
Since it is the defect of compressor
unloading, check the coil end of PWM
valve. If there is no trouble in the coil,
replace the PWM valve.
Is the low pressure
rapidly dropping and the
discharge temperature
increasing?
Since the refrigerant is insufficient,
check to charge if needed.
Are all indoor units
operated normally?
Is high pressure and low
pressure normal?
Are all the above check
items normal?
Complete the test operation mode
and check for 1 unit operation
The system check is
completed.
Operating
pressure
(kg/cm
2
G)
OPEN
1.2±0.2
CLOSE
2.2±0.2
Low switch specification
8-2-4. Low pressure switch detection
Outdoor unit display
Indoor unit display
Judgment method
Causes
(Operation)
(Timer)
(Fan)
(Filter)
(Removing frost)
- Operation stop when low pressure is lower than 1.2kg/cm
2
G(sensor open)
-
System down if the two times of the same situation occurs after restarting
-
(Counter cleared if no defection for 1 hour)
- Low temperature start(outdoor temperature is lower than -5°C
- Leakage / Shortage of refrigerant
- Compressor unloading failure
- Service valve clogged/electronic expansion valve clogged
✳
The minimum applicable temperature of DVM is -5°C and the system may not operate normally below the temperature by the low pressure switch.
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
DB98-17816A(1)_8 3/2/04 9:34 AM Page 174
Содержание DVM Series
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Страница 360: ... 359 359 Heat pump AVMKH Wiring Diagram This Document can not be used without Samsung s authorization ...
Страница 361: ... 360 Wiring Diagram 10 10 1 2 4 way cassette type Cooling only AVMCC ...
Страница 362: ... 361 Heat pump AVMCH ...
Страница 366: ... 365 Wiring Diagram 10 1 4 Wall mounted type AVMWC AVMWH This Document can not be used without Samsung s authorization ...
Страница 367: ... 366 Wiring Diagram 10 10 1 5 Ceiling type AVF This Document can not be used without Samsung s authorization ...
Страница 369: ... 368 Wiring Diagram 10 070F This Document can not be used without Samsung s authorization ...
Страница 370: ... 369 Wiring Diagram 080 100 This Document can not be used without Samsung s authorization ...
Страница 371: ... 370 Wiring Diagram 10 100F This Document can not be used without Samsung s authorization ...
Страница 372: ... 371 Wiring Diagram 10 2 2 Heat pump 050 060 This Document can not be used without Samsung s authorization ...
Страница 373: ... 372 Wiring Diagram 10 080 100 This Document can not be used without Samsung s authorization ...
Страница 374: ... 373 Wiring Diagram 100F This Document can not be used without Samsung s authorization ...
Страница 375: ... 374 Wiring Diagram 10 RMAH140 160 180 200 This Document can not be used without Samsung s authorization ...
Страница 376: ... 375 Wiring Diagram RMAH200 240 260 280 300 This Document can not be used without Samsung s authorization ...
Страница 378: ... 377 Schematic Diagram 11 1 2 4 Way cassette type AVMCC H This Document can not be used without Samsung s authorization ...
Страница 380: ... 379 Schematic Diagram AVMWC H 052 072 This Document can not be used without Samsung s authorization ...
Страница 382: ... 381 Schematic Diagram 11 1 5 Floor Standing type AVMPC H This Document can not be used without Samsung s authorization ...
Страница 383: ... 382 Schematic Diagram 11 11 1 6 Ceiling type This Document can not be used without Samsung s authorization ...
Страница 384: ... 383 Schematic Diagram 11 1 7 Cooling only 060 070 This Document can not be used without Samsung s authorization ...
Страница 385: ... 384 Schematic Diagram 11 050 This Document can not be used without Samsung s authorization ...
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