Mitsubishi Electric CRHV-P600YA-HPB Service Handbook page 130

[ IX Troubleshooting ]
Error
code *1
Error type
(PCB *2)
Inverter Voltage Bus voltage drop protection
4220
error related
108
problems
( )
during
operation
4220 Bus voltage rise protection
109
( )
Logic error
4220
111
( )
Voltage meter error at start up
4220
(Bus voltage drop protection at start up
131
( )
(detected by the Main unit side))
Heatsink fault
(Heatsink overheat protection)
4230
O v r e o l a d p o r e t t c
4240
A C C T s e n s r o a f
5301
115
( )
DCCT sensor
5301
116
( )
A C C T s e n s r o i c /
5301
117
( )
D C C T s e n s r o i c /
5301
118
( )
Open-circuited IPM/loose ACCT sensor
5301
119
( )
Faulty wiring
5301
120
( )
T H H S s e n s r o i c /
5110
S r e a i c l o m m u n c i
0403
P I M s s y e t m e r r
Remote Remote controller signal reception error 1
6831
control-
ler error
(incl.
Remote controller signal transmission error
6832
remote
control-
ler wir- Remote controller signal reception error 2
6834
ing
fault)
Remote controller over current
6833
HWE1312A
Momentary power failure/power failure
Power supply voltage drop (Inter-phase
voltage is 180 V or below.)
Voltage drop
Incorrect power supply voltage
Malfunction due to external noise
interference
• Faulty grounding
• Improper transmission and external
wiring installation
(Shielded cable is not used.)
• Low-voltage signal wire and high-
voltage wire are in contact.
(Placing the signal wire and power
wire in the same conduit)
Power supply voltage drop
Power supply voltage drop (Inter-phase
voltage is 180 V or below.)
Clogged heatsink cooling air passage
o i n C o l g g e d
Power supply voltage drop (Inter-phase
voltage is 180 V or below.)
u t l
c r u t i a f u t l
c r u t i a f u t l
c r u t i a f u t l
t a o i n e r r r o
r o N I V b o a
Remote controller cable is not
connected.
Broken wiring
Communication error due to external
noise interference
Communication error due to external
noise interference
Remote controller cable short circuit
Remote controller malfunction
Cause
(Installation/Setting error)
• INV board CNDC2 wiring fault
• INV board fault
• 52C fault
• Diode stack failure
• INV board fault
• INV board fault
• PCB fault
• Fan motor fault
• THHS sensor fault
• IPM error (loose terminal screws,
cracked due to swelling)
heatsink cooling air passage • THHS sensor fault
• Current sensor fault
• INV circuit fault
• Compressor fault
• N I
• Ground fault of the compressor and IPM
error
• Poor contact at the INV board connector
CNCT
• Poor contact at the INV board connector
DCCT
• Ground fault of the compressor and IPM
error
• P
CNCT2 (ACCT)
• ACCT sensor fault
• P
CNCT
• Poor contact at the INV board connector
DCCT
• DCCT sensor fault
• INV board fault
• Disconnected ACCT sensor (CNCT2)
• ACCT sensor fault
• Broken compressor wiring
• INV circuit fault (IPM error etc.)
• ACCT sensor is connected in the wrong
phase.
• ACCT sensor is connected in the wrong
orientation.
• T H
• THHS sensor fault
• INV board fault
• C
board and INV board (noise interference,
broken wiring)
d r s w c t i h s e t t n i g e r r r o • W
connectors on IPM-driven power supply
circuit
• INV board fault
• Broken remote controller wiring
• Main control board communication circuit
fault
• Main control board communication circuit
fault
• Main control board communication circuit
fault
• Broken remote controller wiring
- 123 -
Cause
(Parts problems)
V b o a d r a f u t l
o r o contact at the INV board connector
o r o c o ntact at the INV board connector
H S s e n s r o c o n a t t c a f u l i e r
o m m u n c i t a o i n e r r r o b e w t e e n c o n r t l o
r i n i g r o c o n n e t c r o c o n n e t c o i n b e w t e e n
Error reset *3
Unit
side Remote
(PCB)
Operation
SWS1
SW
GB