161
COMMISSIONING
ENGLISH
Display
code
Title
Cause of error
Check point & Normal condition
21
DC PEAK
(IPM Fault)
• Instant over current
• Over Rated current
• Poor insulation of IPM
• An instant over current in the U,V,W phase
- Comp lock
- The abnormal connection of U,V,W
• Over load condition
- Overcharging of refrigerant Pipe length.
Outdoor Fan is stop
• Poor insulation of compressor
22
Max. C/T
Input Over Current
1. Malfunction of Compressor
2. Blocking of Pipe
3. Low Voltage Input
4. Refrigerant, Pipe length, Blocked...
23
DC Link High / Low
Volt
• DC Link Voltage is above 420 V DC
• DC Link Voltage is below 140 V DC
• Check CN_(L), CN_(N) Connection
• Check Input Voltage
• Check PCB DC Link voltage sensor parts
24
Low/High Pressure
Switch Perception
Error
• Low pressure is below 0.2 kgf/cm
2
.
• High pressure is above 42~44
kgf/cm
2
.
• Pressure switch is self-defective.
• Check the low/high pressure
• Check the connection of harness
26
DC Compressor
Position
• Compressor Starting fail error
• Check the connection of comp wire “U,V,W”
• Malfunction of compressor
• Check the component of “IPM”, detection parts.
27
AC Input Instant over
Current Error
PCB(Inverter) input current is over
100 A(peak) for 2 us
1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge)
2. Compressor damage (Insulation damage/Motor
damage)
3. Input voltage abnormal (L,N)
4. Power line assemble condition abnormal
5. PCB assembly 1 Damage (input current sensing part)
29
Inverter compressor
over current
(HM**1M U*3) Inverter Compressor
input current is 35 Apk.
(HM**3M U*3) Inverter Compressor
input current is 35 Apk.
1. Overload operation (Pipe clogging/Covering/EEV
defect/Ref. overcharge)
2. Compressor damage(Insulation damage/Motor damage)
3. Input voltage low
4. ODU PCB assembly 1 damage
32
High temperature in
Discharge pipe of
the inverter
compressor
• Overload operation (Outdoor fan
constraint, screened, blocked)
• Refrigerant leakage (insufficient)
• Poor INV Comp Discharge sensor
• LEV connector displaced / poor
LEV assembly
• Check outdoor fan constraint/ screened/ flow structure
• Check refrigerant leakage
• Check if the sensor is normal
• Check the status of EEV assembly
35
Low pressure Error
Excessive decrease of low pressure
• Defective low pressure sensor
• Defective unit fan
• Refrigerant shortage/leakage
• Deformation because of damage of refrigerant pipe
• Defective unit EEV
• Covering / clogging (unit covering during the cooling
mode / unit filter clogging during heating mode)
• SVC valve clogging
• Defective unit PCB(Inverter)
• Defective unit pipe sensor
Summary of Contents for Therma V HM091MRS
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