TROUBLESHOOTING
M-series
HEAT-PUMP
HEAT-RECOVERY
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VS8 - CHAPTER 6 "TROUBLESHOOTING"
METHOD OFF RETRIEVE ERROR-CODE
• ERROR - INDICATION :
– INDOOR :
• INSPECTION MODE :
– LAST OCCURRED ERROR.
– POSSIBLE TO RESET TO “ ØØ” :
» while display error : hold on/off button ↑±5 seconds
• SERVICE MODE :
– LAST 9 ERRORS OCCURRED
– NOT POSSIBLE TO RESET.
– OUTDOOR : MONITORING MODE
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OVERVIEW ERROR CODES - INDOOR
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OVERVIEW ERROR CODES - OUTDOOR SIDE - 1
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OVERVIEW ERROR CODES - OUTDOOR SIDE - 2
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OVERVIEW ERROR CODES - SYSTEM
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OVERVIEW ERROR CODES - CENTRAL & HRV
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INSPECTION & REPAIR INSTRUCTIONS
• INSPECTION :
– INVERTER
• for COMPRESSOR.
• for FAN MOTOR.
– EXPANSION VALVE MOTOR
– THERMISTOR
– PRESSURE SENSOR
• REPAIR :
– REPLACEMENT INVERTER COMPRESSOR
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VS8 - CHAPTER 6 "TROUBLESHOOTING"
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INSPECTION INVERTER - COMPRESSOR
DIODE
MODULE
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VS8 - CHAPTER 6 "TROUBLESHOOTING"
POWER
MODULE
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INSPECTION INVERTER - COMPRESSOR
DIODE
MODULE
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VS8 - CHAPTER 6 "TROUBLESHOOTING"
POWER
MODULE
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INSPECTION INVERTER - COMPRESSOR
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INSPECTION INVERTER - FAN MOTOR
• STEP 1 :
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INSPECTION INVERTER - FAN MOTOR
• STEP 2 :
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INSPECTION INVERTER - FAN MOTOR
• STEP 3 :
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INSPECTION EXPANSION VALVE MOTOR
1
2
PLUG
TO
PCB
3
4
5
6
normal
white
reverse
white
yellow
orange
blue
orange
blue
yellow
red
red
brown
brown
WHITE
Ø1
RED
MOTOR
EXPANSION
VALVE
Ø3
ORANGE
YELLWO
Ø2Ø4
BLUE
BROWN
COIL
Ø 1
Ø 2
Ø 3
Ø 4
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VS8 - CHAPTER 6 "TROUBLESHOOTING"
on
off
on
off
on
off
on
off
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STEP ( ± 5 msec)
(4) 1 2 3 4 (1)
INSPECTION AIR & HEX. THERMISTOR
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INSPECTION THERMISTOR - DISCHARGE
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INSPECTION PRESSURE SENSORS
HP
HP
LP
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LP
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INSTRUCTION FOR REPLACEMENT
INVERTER COMPRESSOR
1°/ RECOVER REFRIGERANT (MODE 2 - CODE 21)
2°/ REMOVE SOUND INSULATION & POWER TERMINALS
3°/ CUT PIPES BETWEEN BRAZING & COMPRESSOR
4°/ HEAT-UP PIPE AND PULL OUT ORIGINAL PIECE
5°/ REMOVE BOLTS & COMPRESSOR .
6°/ POSITION NEW COMPRESSOR
7°/ TAKE OUT CAPS (INSIDE N2)
8°/ BRAZE ALL PIPES :
8.1 ! N2 FLOW ( MAX. 0.02MPa)
8.2 ! COOL OIL EQUALIZING SEAT!
9°/ LEAK TEST.
10°/ VACUUM DRYING.
11°/ REFRIGERANT CHARGE :
11.1 WITHOUT COMPRESSOR OPERATION
11.2 WITH COMPRESSOR OPERATION : MODE 2 - CODE 20.
12°/ CONFIRM VOLTAGE & CURRENT IS EQUAL TO U/V/W .
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