Service Manual

SERVICE MANUAL (C,H,T)VA9 & (C,H,T)VH8
14 421 08 5600 02
Specifications subject to change wi thout notice.
Table 6—Fault Code Actions
FLASH
CODE
TYPE
AMBER LED
DESCRIPTION
RESET
TIME
MODE POSSIBLE CAUSES ACTIONS
43 Fault Codes
ON, no
flash
Standby
1, pause Variable Capacity Normal Operation f or
communicating
system
1(2secON),longer
pause (1 second
OFF)
Variable Capacity
(Range Cutback)
Speed Limiting for
communicating
systems
1, pause 2- stage ”Low”
Capacity
Low capacity for
non- communicating
2, pause 2- stage ”High”
Capacity
High capacity for
non- communicating
4, pause 2- stage ”Reduced”
Capacity
Speed Limiting for non- communicating systems
25 System
Malfunction
INVALID MODEL
PLUG/INVERTER SIZ E
NA Both Missing model plug Install the correct model plug
Wrong Model Plug
Installed
Verify correct model plug installed
Damaged Model
Plug
Check model plug for corrosion or breakage;
replace if necessary. Check Model Plug
resistance per the wiring diagram
Model Plug not fully
engaged on board
Align per the silkscreen layout
Incorrect Model Plug
with Inverter Size
Replaceplugorinverterwithcorrectsize(If
model plug is for 2 Ton but Inverter is 3 Ton,
faultcode25willbeshown)
Damaged AOC
control
Replace AOC control
31 Fault HIGH PRESSURE
SWITCH OPEN
(Stage down for each
occurrence, elevates
to fault code 84 when
it occurs while running
on the lowest stage.
Reduced capacity is
cleared when system
has been continuously
running at any stage
for 2 hours with
reduced capacity.)
6 Minutes
(then
reduced
stage
operation)
Both Ref er to fault code 84
32 Local LOW PRESSURE TRIP
(Elevates to fault code
83 after 3 occurrences)
6 Minutes Both Refer to fault code 83
33 Local LOST INVERTER
COMMUNICATIONS
(Occurs after 2
minutes of no commu-
nications between
AOC and MOC)
(Elevates to fault code
48 after 3 consecutive
failures within 20
minute or 20 minutes
continuous loss of
connection)
NA Both Refer to fault code 48
46 Local BROWNOUT EVENT 6 Minutes Both Low line voltages Check for line voltage approximately greater
than180V. If voltage less than 180V and if
persistent contact power provider
Bad connection on
L1 and L2
Check for connection on line and load side to
verify connection is good.
Inverter not reading
proper voltage
Verify no action issue from the above list then
replace inverter.